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Text File | 1995-06-30 | 106.4 KB | 2,407 lines

This file summarizes all changes made to Tk since version 1.0 was released on March 13, 1991. Changes that aren't backward compatible are marked specially. sccsid = @(#) changes 1.21 95/06/30 11:18:48 3/16/91 (bug fix) Modified tkWindow.c to remove Tk's Tcl commands from the interpreter when the main window is deleted (otherwise there will be dangling pointers to the non-existent window). 3/16/91 (bug fix) Modified tkColor.c not to free black or white colors: some X servers get upset at this. 3/18/91 (bug fix) Modified tkShare.c to fix bug causing "DeleteGroup couldn't find group on shareList" panic. 3/18/91 (bug fix) Several changes to tkListbox.c and tkScrollbar.c to handle listboxes (and scrollbars) with zero total entries in them. 3/22/91 (bug fix) Fixed a few ='s in tkListbox.c that should be ==. 3/22/91 (bug fix) Fixed error in main.c that caused BadWindow errors in some cases where wish scripts invoke "destroy .". 3/23/91 (new feature) Added Tk_CancelIdleCall to remove Tk_DoWhenIdle handler. 3/23/91 (bug fix and new feature) Added -name option to main.c, made it more clever about choosing name (was always using the name "wish" on most Unix systems). 3/23/91 (new feature) Added TK_CONFIG_STRING option to Tk_ConfigureWidget, used it to malloc strings for various widget options that used to be Tk_Uid's (e.g. button text, message strings, etc.). Eliminates core leaks when values change in continuous non-repeating fashion. 3/29/91 (new feature) Added Tk_Preserve, Tk_Release, and Tk_EventuallyFree procedures to help manage widget records and avoid premature memory free-ing. 4/4/91 (bug fix) Fixed problem in tkWm.c where top-level window geometry wasn't tracking correctly when wm-induced size change also changed window position (e.g. menus wouldn't be displayed at the right places). 4/5/91 (new feature) Added "invoke" option to widget command for buttons, check buttons, and radio buttons. 4/5/91 (new feature) Added "unpack" option to "pack" command. 4/5/91 (bug fix) Changed tkPack.c to use new Tk_Preserve code and be more careful about window deletions that occur while repacking is in progress. 4/6/91 (bug fix) Major overhaul of deletion code in all widgets to use Tk_Preserve and Tk_Release. Should fix many problems. 4/6/91 (bug fix) Changed "winfo children" to generate correct lists when child names have embedded spaces. 4/6/91 (new feature) Added "screenheight" and "screenwidth" options to "winfo". 4/18/91 (bug fix) Binding mechanism didn't correctly handle very long %-substitutions in commands (e.g. long path names) and caused memory to be overwritten. Modified tkBind.c to fix. ---------------------- Release 1.1, 4/18/91 ------------------------- 4/19/91 (bug fix) Inconsistent ICCCM handling of coordinates of reparented windows causes windows to gradually walk south when moved or resized. Fixed tkWm.c to patch around the problem. ---------------------- Release 1.2, 4/24/91 ------------------------- 4/26/91 (new feature) Added -geometry and -display switches to wish. Also wrote wish manual entry. 5/3/91 (bug fix) Fixed bug in tkListbox.c that caused garbage to appear at right edge of window when strings were to large to fit in window. 5/3/91 (bug fix) Fixed bug in tkListbox.c where topIndex wasn't getting updated when elements were deleted: tended to cause errors in communication with scrollbars. 5/16/91 (bug fix) Fixed bug in tk3d.c, which caused core dumps when consecutive points in a polygon were the same (happened with some configurations of radio buttons, for example). 5/16/91 (bug fix) Fixed main.c to allow stdin to be redirected. 6/1/91 (bug fix) Make sure that pointers are never used after being freed. 6/15/91 (bug fix) Fixed bug in tkBind.c that caused current binding values to not always be printed correctly. 6/15/91 (bug fix) Make sure that interpreters are always unregistered when their main windows are deleted, and make wish delete the main window before exiting. 8/21/91 (misfeature correction) Automatically set source of window position to "user" in "wm geometry" command, unless it has been explicitly set to "program". 9/5/91 (bug fix) Modified option code to accept '#' as a comment character in .Xdefaults files, in addition to '!'. 9/10/91 (misfeature correction) Changed binding mechanism so that numeric %-sequences are output in decimal instead of hex. 9/19/91 (bug fix) Fixed bug in Tk_DoOneEvent(1) where it wasn't checking files and X connections properly so it missed events. 10/6/91 (new feature) Reorganized tkBind.c to provide generic "binding table" structure, which can be used to create bindings on items in canvases as well as windows. 10/6/91 (new feature) Upgraded buttons and menus to use new tracing code in Tcl 6.0. Allows radio buttons and check buttons to both set and clear themselves when associated variable changes. 10/17/91 (bug fix) Fixed 2 bugs in listboxes: accidentally advanced the selection when new entries were inserted in the listbox after the location of the selected item(s), and goofed up on redisplay if selected item was deleted and then selection was immediately lost. 10/27/91 (bug fix) "pack unpack" wasn't telling Tk that it no longer manages window; this led to core dumps in some situations. 10/31/91 (reorganization) Renamed manual entries so that they are no more than 14 characters in length. 10/31/91 (reorganization) Changed tk.h and tkInt.h so that tkInt.h doesn't needed to be included by tk.h. 11/3/91 (portability improvement) Eliminated use of "class" as a variable name, since it's a reserved word in C++. 11/7/91 (reorganization) Many changes to upgrade for Tcl 6.1 including use of Tcl hash tables instead of separate "Hash_" module. The "lib" subdirectory is no longer needed in Tk. ---------------------- Release 1.3, 11/7/91 ------------------------- 11/24/91 (bug fix) Fixed bug causing occasional errors if existing bindings are modified (FindSequence in tkBind.c forget to set *maskPtr). 11/24/91 (bug fix) Used wrong hash table in Tk_GetColorByValue. Could cause new entries to get created unnecessarily. 12/2/91 (bug fix) Changed "bind" code to put backslashes in front of special characters (e.g. [ or \) that appear in %-replacements, so that they can be parsed cleanly. 12/10/91 (bug fix) Manual entries had first lines that caused "man" program to try weird preprocessor. Added blank comment lines to fix problem. 1/2/92 (documentation cleanup) Changed manual entries for Tk_GetBitmap and the like to make it more clear that the argument must be a Tk_Uid and not a string. 1/2/92 (bug fix) Fixed problem where scrollbars that were very short or very narrow (too small to hold both arrows) could cause negative values in calls to XClearArea, which crashed some servers. 1/2/92 (bug fix) Fixed bug in TkMeasureChars occurring when maxChars is 0. Occasionally affected things like message window geometry. 1/3/92 (new feature) Added procedures Tk_GetJustify, Tk_GetAnchor, Tk_GetCapStyle, and Tk_GetJoinStyle, plus support for these things in Tk_ConfigureWidget. ---------------------- Release 1.4, 1/10/92 ------------------------- 1/12/92 (bug fix) TkMenubutton.c wasn't cleaning up mbPtr->varName properly during menubutton cleanup if an error occurred during menubutton creation. 1/19/92 (bug fix) Fixed off-by-one bug in tkListbox.c that caused scrollbars to display a slider that was too large. 2/10/92 (bug fix) Tk_CreateFileHandler didn't correctly handle case where new mask was specified for existing handler. 2/13/92 (bug fix) Tk_DeleteAllBindings wasn't correctly removing bindings from the pattern table: only did the removal for the first pattern in a pattern list. 2/15/92 (new feature) Added procedures Tk_DefineBitmap and Tk_SizeOfBitmap. Tk_GetBitmapFromData is now considered obsolete and probably shouldn't be used anymore. Tk_GetBitmapFromData is now implemented by calling Tk_DefineBitmap and Tk_GetBitmap. 2/15/92 (new feature) Added "curselection" and "select clear" options to widget command for listboxes. 2/15/92 (new feature) Added Tk_3DBorderColor procedure. 2/17/92 (relaxed limitations) Changed scrollbars so they no longer limit the slider position to lie within the object's range: can scroll off the end of an object, if the object permits it. Changed listboxes and entries to explicitly prevent viewing off the ends. Also relaxed listbox index checks so that out-of-range indices are automatically adjust to fit within the listbox range. 2/19/92 (bug fix) tkWindow.c tended to leave half-created windows around if a new window's name was found to be in use already. Fixed to clean them up. 2/22/92 (new feature) Added -anchor, -bitmap, -height, -textvariable, -width options to labels, buttons, check buttons, menu buttons, and radio buttons. This means that (a) size can be controlled better, (b) bitmaps can be displayed in any buttons, (c) the position of the text within the button can be controlled, and (d) a button can be made to display the value of a variable, continuously updating itself. Also changed -selector option so that if it's specified as an empty string then no selector is drawn for the button. 2/22/92 (new feature) Changed menus to support bitmaps in menu entries: added new -bitmap option for entries. 2/26/92 (bug fix) "after" command, when invoked with just one argument, called Tk_Sleep rather than registering a timer handler and looping on Tk_DoOneEvent. As a result, it caused the application to become non- responsive to X events during the sleep. Changed to use a Tk_DoOneEvent loop so that it is responsive. 2/26/92 (bug fix) Tk's main program didn't map the main window until after the startup script returned. Changed to map the window as a do-when-idle handler, so that scripts can cause the window to be mapped immediately with a call to "update" or "after". 2/28/92 (bug fix) "wm withdraw" wasn't working if invoked before window was originally mapped: window got mapped anyway. Fixed so that the window doesn't get mapped as long as it's withdrawn. 2/29/92 (new feature) Can use "focus none" to clear input focus. 2/29/92 (bug fix) Fixed tkEvent.c to generate SubstructureNotify events properly. These weren't being generated previously. 2/29/92 (bug fix) Fixed entries so that newline characters can be properly displayed (as `\x0a'). Had to change interface to TkDisplayChars in order to do this (added flags argument). 2/29/92 (bug fix) Change Tk not to update size and position of top-level windows directly during calls like Tk_ResizeWindow. Instead, wait until actual event is received. This makes updates happen at same time as callbacks. 3/6/92 (bug fix) TkMenubutton.c was dumping core when a menubutton was pressed at a time when there was no associated menu for the button. 3/6/92 (new feature) Added Tk script library directory with official Tk initialization file "tk.tcl". Other procedures used by Tk are in other files. Tk procedures and variables all have names starting with "tk_". Also added Wish startup script "wish.tcl", which sources both the Tk and Tcl startup scripts. This means that things like auto-loading and abbreviation expansion are now available in wish. Added new variables tk_library, tk_priv, and tk_version. 3/6/92 (new feature) It's now possible to set bindings for whole classes by using the class name in the bind command. For example, "bind Button <Enter> {puts stdout Hi!}" will cause a message to be printed whenever any mouse button is entered. Can also use "all" to set bindings for all widgets. Widget-specific bindings override class bindings which override "all" bindings. 3/6/92 (reorganization) Changed buttons (all flavors) and listboxes to eliminate all hard-wired behavior. Instead, default behavior is set by class bindings in tk.tcl. Also set up class bindings for menus, menubuttons, and entries, which previously had no default behavior at all. Scrollbars and scales still have hard-wired behavior that can't be overridden. 3/7/92 (look-and-feel change) Changed listboxes and entries and menus to use button 2 for scanning instead of button 3. This is more consistent with the official Motif use of button 2 for dragging. 3/10/92 (new features) Added more options to "winfo" command: screencells, screendepth, screenmmheight, screenmmwidth, and screenvisual. 3/13/92 (bug fix) Event sharing mechanism (tkShare.c) wasn't checking to see whether window was mapped before sharing events with it. 3/16/92 (bug fix) Tk_SetInternalBorderWidth was passing wrong window to geometry-management procedures, causing core-dumps when menu buttons had their border widths changed. 3/16/92 (bug fix) Menus were setting their geometry directory rather than using Tk_GeometryRequest mechanism. 3/17/92 (new feature) Added -cursor option to all widgets to set the active cursor for the widget. Also added TK_CONFIG_ACTIVE_CURSOR configure type. 3/18/92 (new feature) Implemented generalized screen coordinates to allow resolution-independent specification in many cases (but pixel- based coordinates are still OK). Added Tk_GetScreenMM(), Tk_GetPixels(), new configure types TK_CONFIG_SCREEN_MM and TK_CONFIG_PIXELS. Changed widgets to use this new configure types wherever possible (a few of the more complex cases still haven't been taken care of yet). Added "pixels" and "fpixels" options to "winfo" command. 3/18/92 (new feature) First cut at canvas widgets is done and part of the official Tk now. Canvases display text and structured graphics, and allow you to bind commands to events related to the text and graphics. 3/21/92 (new feature) Added new "place" command. It implements a new geometry manager that provides fixed placement, rubber-sheet placement, and combinations of the two. Eliminated the commands "move", "resize", and "map" that were provided by main.c but never officially supported; the placer provides all of this functionality. 3/23/92 (bug fix) Fixed bug in tkWm.c where top-level windows were occasionally not being given the right size. The problem occurred when a string of resizes happened all in a row (such as deleting all the windows in an application and then recreating them). 3/23/92 (new feature) Added Tk_CoordsToWindow procedure and "winfo containing" command. These may be used to locate the window containing a given point. 3/28/92 (new feature) Added "-exportselection" option to listboxes, so that listbox selection need not necessarily be the X selection. 4/12/92 (bug fix) Changed menu buttons to store name of menubutton in the associated variable, rather than the name of the menu. This is necessary in order to allow several menu buttons to share the same menu. *** POTENTIAL INCOMPATIBILITY *** 4/12/92 (bug fix) Fixed core dump that occurred in tkError.c when removing the first error record from the error list. 4/15/92 (bug fix) Fixed bug in tkBind.c that prevented <KeyPress-1> event specifications from being processed correctly: the "1" was treated as a button name rather than a keysym. 4/18/92 (new feature) Added Tk_DefineCursor and Tk_UndefineCursor procedures. 4/18/92 (new feature) Major revision to listboxes. Can now scroll and scan in both x and y, plus -exportselection option allows selection not to be exported. The "view" widget command has been replaced by "xview" and "yview", and the "scan" widget command has a new syntax. *** POTENTIAL INCOMPATIBILITY *** 4/18/92 (new feature) Added -exportselection option to entries, so you can select whether you want the entry selection to be the X selection or not. 4/24/92 (new features) Added TK_CONFIG_CUSTOM type to Tk_ConfigureWidget, plus added new flags TK_CONFIG_NULL_OK, TK_CONFIG_DONT_SET_DEFAULT, and TK_CONFIG_OPTION_SPECIFIED. Several other new types, such as TK_CONFIG_CAP_STYLE, were also added as part of implementing canvases. 4/29/92 (bug fix) Changed "-selector" default for menus to have separate values for mono and color. 4/30/92 (bug fix) Fixed bug in tkListbox.c where it occasionally generated bogus scroll commands (last index less than first). 4/30/92 (reorganization) Moved demos directory to "library/demos". ---------------------- Release 2.0, 5/1/92 ------------------------- 5/2/92 (bug fix) Fixed problem in tkListbox.c where it was doing too many redisplays after repeated insertions. Also reduced number of invocations of scrollbar commands. 5/7/92 (portability improvement) Changed main.c not to use TK_EXCEPTION flag; it isn't needed and it causes problems on some systems. 5/9/92 (bug fix) Plugged core leaks in tkListbox.c and tkBind.c 5/9/92 (bug fix) TkBind.c was accidentally deleting bindings during attempts to print non-existent bindings. 5/11/92 (bug fix) Maximum name length for applications (name used in "send" commands) was too short (only 20); increased to 1000. Also fixed bug related to over-long names that caused core dumps. 5/13/92 (bug fix) tkShare.c was using a dangling pointer if a share group was deleted as a side-effect of a shared event. 5/13/92 (bug fix) Various initialization and core leak problems in tkGC.c, tkSend.c, tkMenu.c, tkEvent.c, tkCanvas.c, tkCanvPoly.c, tkCanvLine.c, tkListbox.c, tkEntry.c. 5/13/92 (bug fix) Empty entries could be scanned off the left edge, displaying a garbage character. 5/13/92 (bug fix) Fixed a few problems with window manager interactions, such as tendency for windows to spontaneously shrink in size. By no means are all of the problems fixed, though. 5/13/92 (performance optimization) Changed Tk_GeometryRequest not to invoke geometry manager unless requested size has changed. ---------------------- Release 2.1, 5/14/92 ------------------------- 5/1/92 (new features) Added flags like TK_IDLE_EVENTS to Tk_DoWhenIdle, plus added "idletasks" option to "update" command. Tk_DoWhenIdle arguments look different now, but the change should be upward-compatible. 5/17/92 (new feature/bug fix) Added support for VisibilityNotify events to the "bind" command. For some reason they weren't supported previously. 5/17/92 (new feature) Added "tkwait" command. 5/17/92 (new feature) Added "grab" command. 5/17/92 (new feature) Added "-width" option to messages. Also changed messages to use the computed (i.e. desired) line length when displaying, not the actual width of the window. 5/17/92 (bug fixes) Did some more fiddling with tkWm.c in the hopes of improving window manager interactions. Now there won't be more than one configure request outstanding to the wm at a time. 5/17/92 (bug fix) Arrowheads on canvas lines weren't being translated or scaled correctly. 5/20/92 (bug fix) Page-mode scrolling didn't work correctly for canvases (wrong windowUnits was passed to scrollbars). 5/20/92 (bug fix) Changed scrollbars not to lose highlight when pointer leaves window with button down. Also changed redisplay to double-buffer for smoother redraws. 5/21/92 (new feature) Added "gray50" and "gray25" as predefined bitmaps. 5/22/92 (new feature) Buttons can now be disabled using the "-state" and "-disabledforeground configuration options. The "activate" and "deactivate" widget commands for buttons are now obsolete and will go away soon. Please change Tcl scripts not to use them. 5/23/92 (new feature) Entries can now be disabled using the "-state" config option. Also improved class bindings for entries to keep the cursor visible in the window when operations occur. Also made slight improvements in the way redisplay is done. 5/23/92 (new feature) Added "-textvariable" option to entries so that the text in an entry can be tied to the value of a global variable in a fashion similar to buttons. 5/27/92 (new feature) Added "-textvariable" and "-anchor" options to messages. 5/28/92 (new feature) Added "-padx" and "-pady" and "-underline" options to menubuttons. 5/28/92 (feature change) Changed "-width" and "-height" options on all flavors of buttons and menubuttons so that they are orthogonal to "-padx" and "-pady". It used to be that -width overrode -padx (no padding). Now they accumulate. 5/29/92 (new feature) Added "-disabledforeground" option to menus and all flavors of buttons (can specify color for disabled things rather than just using stipple to gray out). 5/29/92 (new features) Added many new options to menu entries: -activebackground, -background, -font, -state, -underline. The "disable" and "enable" widget commands for menus are now obsolete and will go away soon. Please change Tcl scripts not to use them. 5/29/92 (new features) Added "atom" and "atomname" options to "winfo" command. 5/29/92 (new feature) Wrote tk_listboxSingleSelect procedure, which can be used to change listbox behavior so that only a single item is selected at once. 6/1/92 (new feature) Added new modifier names "Meta" and "Alt" for "bind" command. 6/3/92 (new feature) Added "winfo toplevel" command. 6/3/92 (new feature) Made several changes for greater Motif compliance, including: - menu retention if you click and release in the menu button, - keyboard traversal of menus (see traversal.man) - no widget flashing if you set $tk_strictMotif to 1 6/15/92 (bug fix) Fixed problem in tkBind.c where command string for a binding could get reallocated while the command was being executed (e.g. bindings that delete or change themselves). 6/15/92 (bug fix) Don't allow "tabWidth" field to become zero in tkFont.c: can cause core dumps for fonts that don't enough information to compute tab widths. 6/19/92 (bug fix) Fixed bug in binding mechanism that caused structure- related events to be reported both to the correct window and its parent. 7/14/92 (bug fix) Changed tkColor.c not to free colors for visual types StaticGray or StaticColor. 7/15/92 (new feature) Text widgets now exist. They display any number of lines of text with a variety of display formats, and include hypertext facilities. See the manual page for details. 7/20/92 (bug fix) If a top-level window was put in the iconic state to begin with, it could be deiconified with "wm deiconify .foo" until it had first been deiconified by hand from the window manager. Tk was getting confused and thought the window was mapped when it wasn't. 7/29/92 (bug fix) Don't permit rectangles or ovals to have zero-sized dimensions. Round up to at least one pixel. 7/29/92 (new features) Major upgrade to canvases: - new item types: arc, window, bitmap - added Bezier spline support for lines and polygons - rectangles and ovals now center their outlines on the shape, rather than drawing them entirely inside the shape - new "coords" and "bbox" widget commands - new "-tags" option for all item types. - new "-confine" option to prevent scrolling off edge of canvas. 8/6/92 (new feature) Added "-width" and "-height" options to frames. The "-geometry" option is now obsolete and should be removed from Tcl scripts: it may go away in the future. 8/7/92 (bug fix) Error messages in Tk_ParseArgv were sometimes including the option name where they should have included its value. ---------------------- Release 2.2, 8/7/92 ------------------------- 8/7/92 (bug fix) Changed tkCanvas.c to be more conservative in the area it passes to XCopyArea. 8/8/92 (bug fix) Fixed bug in tkTextDisp.c that sometimes caused core dumps when text views changed (e.g. typing return on last line of screen). 8/8/92 (bug fix) Fixed bug in menu.tcl that caused errors when using keyboard to traverse over separator menu entries. 8/10/92 (bug fix) Changed to use OPEN_MAX instead of MAX_FD to compute maximum # of open files. 8/10/92 (bug fix) Canvases weren't updating scrollbars on window size changes. They also weren't recentering canvases on window size changes. 8/10/92 (bug fix) There were still a few places where commands were being invoked at local level instead of global level (e.g. commands associated with buttons and menu entries). 8/10/92 (bug fix) TkBind.c used to ignore explicit shift modifiers for all keys (i.e. <Shift-Tab> was treated the same as <Tab>). Modified to allow explicit request for shift modifier, like <Shift-Tab>. 8/13/92 (feature change) Changed default fonts to request "Adobe" fonts explicitly. 8/16/92 (bug fixes) Modified tkCanvArc.c and tkTrig.c to increase slightly the bounding boxes for arcs, in order to make sure that proper redisplay occurs when arcs are moved (little turds were getting left behind). 8/16/92 (bug fix) Modified tkCanvas.c not to redraw at all if the redisplay area is off the screen. Also, only do a background clear for the portion of the redraw area that is on-screen. Also, reduced size of off-screen pixmaps used for redisplaying, which speeds up redisplay in some cases. 8/19/92 (bug fix) Canvases that were taller than wide were not being redisplayed properly. 8/20/92 (new feature) Added Tk_CreateGenericHandler procedure for trapping all X events (useful for tracing, watching non-Tk windows, etc.). 8/21/92 (bug fix) Widgets weren't always being notified when they got the focus back again (the problem had to do with grabs and menus in particular). 8/21/92 (new feature) Added "-state" option to scale widgets. 8/22/92 (new feature) Changed tkBitmap.c to allow tilde-substitution to occur in bitmap file names. ---------------------- Release 2.3, 8/24/92 ------------------------- 8/27/92 (bug fix) Changes to -activebackground and -activeforeground options for menubuttons were being lost. 8/27/92 (bug fix) Entries were selecting last character when a B1-drag occurred past the right edge of the text. 8/28/92 (bug fix) Fixed bug in canvases where a grab during a button press caused the canvas state to lock up so that it didn't select a new current item. 9/7/92 (bug fix) Changed tkMenu.c to accept numerical menu indices that are out of range; now it just rounds them off to the nearest existing entry. 9/7/92 (bug fix) Fixed bug in tkTextDisp.c that caused core dumps when invoking "yview -pickplace" widget command on texts that are too small to hold any lines at all. 9/11/92 (bug fix) Fixed bug in tkTextDisp.c that caused core dumps when adding tags to non-existent lines. 9/11/92 (bug fix) Line items in canvases didn't permit an empty fill color (i.e. couldn't make them transparent). 9/14/92 (reorganization) Changed manual entries to use .1, .3, and .n extensions. Added "install" target to Makefile to suggest how Tk should be installed. 9/16/92 (bug fix) Changed tkSend.c to always specify the root window of screen 0 rather than using DefaultRootWindow. DefaultRootWindow doesn't always go to screen 0 on displays with multiple screens, which can result in send's not being possible between the screens. 9/18/92 (new feature) Added three new options to "wm" command: "protocol", "client", and "command". These provide support for window manager protocols such as WM_DELETE_WINDOW and WM_TAKE_FOCUS, plus support for the WM_CLIENT_MACHINE and WM_COMMAND properties. 9/30/92 (new feature) Implemented color model support, including "tk colormodel" command and Tk_GetColorModel and Tk_SetColorModel procedures. These allow you to force mono operation even on a color display. Also changed color allocation not to give errors when colors run out, but just to switch to a mono color model. 10/1/92 (bug fixes) Fixed two bugs in tkTextBTree.c that caused core dumps during text deletion. 10/5/92 (bug work-around) Changed tkColor.c to ignore errors when freeing colors. This is needed to work around improper reference count management for colormap entries under X11/NeWS. 10/7/92 (new feature) Added support for different visual types, including procedures Tk_SetWindowVisual and Tk_SetWindowColormap, plus macros Tk_Visual, Tk_Depth, and Tk_Colormap. The code for this was contributed by Paul Mackerras. 10/7/92 (new feature) Added Tk_IsTopLevel macro. 10/12/92 (bug fix) Fixed bug in tk.tcl that caused torn-off menus with cascaded children not to track mouse motion correctly (the cascade switched in response to mouse motions within the cascaded child). 10/12/92 (new feature) Major changes to focus handling: (a) Tk watches FocusIn and FocusOut events for focus changes, not Enter and Leave, so it will work better with explicit-focus-model window managers (e.g. mwm in default mode). (b) Tk generates FocusIn and FocusOut events for the focus window now. The old procedural interface (via Tk_CreateFocusHandler) is obsolete and is no longer used inside Tk. It is still supported for compatibility, but won't be for long. You should change your code to use FocusIn and FocusOut events instead. (c) The model for FocusIn and FocusOut events is different than the one described in Xlib documentation. See the "focus" manual entry for details. (d) If there is no input focus then keyboard events are discarded. They used to be directed to the mouse pointer window, although this wasn't documented. The focus now defaults to the root window. *** POTENTIAL INCOMPATIBILITY *** 10/15/92 (bug fix) Fixed text items in canvases where they didn't display the insertion cursor if the item had no characters in it. 10/26/92 (bug fix) Fixed bug in tkSelect.c that occasionally caused BadWindow X protocol errors when retrieving the selection. Tk wasn't making sure that a window existed before using it to retrieve the selection. 10/30/92 (feature change) Changed canvases so that if the scroll region is smaller than the window and -confine is on, the scroll region isn't forced to be centered in the window; it can be anywhere that meets the confinement restrictions. 11/2/92 (new feature) Added "winfo exists" command. 11/5/92 (new feature) Changed DoWhenIdle handlers so that if a new when-idle handler is created as a side-effect of another when-idle handler, the new handler isn't invoked until Tk has first checked for other events to process. 11/6/92 (bug fixes, new features) Major overhaul of window manager interface: (a) Tk should now work with virtual-root window managers; (b) windows will now place more accurately on the screen and stay where they're supposed to; (c) size changes handled more reliably; (d) code now works robustly in the face of withdrawals followed immediately by deiconifications. (e) Added new procedure Tk_GetVRootInfo and new options to "winfo" command: vrootx, vrooty, vrootwidth, vrootheight. (f) Added "overrideredirect" option to "wm". (g) Fixed bug where change in width-only via "wm geom" didn't always work (min and max window sizes weren't being set properly for the wm). 11/6/92 (bug fixes) Modified menus so that they work correctly with virtual root window managers. Also fixed bug where menus didn't move along with their associated windows, so that the menu popped up at the old location of the window rather than its new location. 11/9/92 (new constraint) Made it illegal to give windows names that start with upper-case letters, since such names will goof up the option database by appearing to be classes rather than names. *** POTENTIAL INCOMPATIBILITY *** 11/10/92 (new feature) Added Postscript output to canvases. 11/13/92 (bug fix) Changed default for maximum size passed to window manager from 1000000 (which causes some wm's to make windows too large when "maximized") to the size of the display. 11/14/92 (feature change) Major overhaul of menubuttons and pull-down menus. Removed event-sharing code, including Tk_ShareEvents and Tk_UnshareEvents. The -variable option for menubuttons has been removed,and the "post" and "unpost" widget commands for menubuttons no longer exist. The "post" widget command for menus no longer allows a group option. The procedure tk_menus has been replaced with a new procedure, tk_menuBar, which has a slightly different interface. *** POTENTIAL INCOMPATIBILITY *** 11/20/92 (new features, feature changes) Major overhaul of grab mechanism to produce more correct event streams. Also changed Tcl commands to require explicit window for grab releases (makes it possible for grabs to work on multiple displays simultaneously). The old "grab none" command no longer exists, but new options have been added: "current", "release", "set", and "status". *** POTENTIAL INCOMPATIBILITY *** 11/20/92 (new feature) Use TK_LIBRARY environment variable to set library directory location, if it is defined. Otherwise fall back on usual compiled-in value. 11/25/92 (bug fix) "wm grid" command was using wrong window. 11/29/92 (bug fix) Fixed core dump that occurred when trying to use placer on top-level windows: return error instead. 11/29/92 (bug fix) Selection retrieval wasn't making sure that the window on whose behalf selection is being retrieved actually exists. 12/3/92 (new feature) Added support for Mode_switch key to support the full ISO character set. Also added event handlers for MappingNotify events so that Tk updates itself in response to keycode and modifier changes. 12/6/92 (bug fix) Ignore recursive attempts to destroy window. 12/9/92 (new demos) Added "tcolor" and "rmt" demos. 12/10/92 (new features) Added "yposition" widget command for menus, changed "delete" widget command to take an optional second index, and changed -command option for cascade entries so that it is invoked when the entry is activated rather than when it is invoked. *** POTENTIAL INCOMPATIBILITY *** 12/12/92 (implementation change) Changed the procedures Tk_FreeBitmap, Tk_NameOfBitmap, Tk_SizeOfBitmap, Tk_FreeCursor, Tk_NameOfCursor, and Tk_FreeGC to require an addition Display argument. This is needed for Tk to function correctly when an application has windows on multiple displays. *** POTENTIAL INCOMPATIBILITY *** 12/12/92 (new feature) Started creating a test suite. Right now it only has a few tests. 12/12/92 (new feature) Modified the packer so that a window can be packed in descendants of its parent (used to be restricted to the parent alone). This makes it possible to hide extra windows used for geometry management. Also, can use generalized screen distances in the "pack" command. 12/16/92 (feature change) Boolean options such as -exportselection now print as 0/1 rather than true/false (both the default and current values print this way). This makes it easier to use these values in expressions. *** POTENTIAL INCOMPATIBILITY *** 12/16/92 (name change) The classes "RadioButton" and "CheckButton" have been renamed "Radiobutton" and "Checkbutton" for consistency. From now on widget class names will have exactly one capital letter. *** POTENTIAL INCOMPATIBILITY *** 12/16/92 (new feature) Added -setgrid option to listboxes. 12/16/92 (new feature) The "destroy" command, and the "delete" widget command for canvases, now accept any number of arguments, including zero. 12/16/92 (new feature) Changed internal TkBindError procedure to Tk_BackgroundError and exported it to Tk clients. 12/16/92 (option name change) Changed the place command's "dependents" option to "slaves" for better consistency with documentation. *** POTENTIAL INCOMPATIBILITY *** 12/16/92 (name changes) Renamed the "cursor*" options in entries and canvases to "insert*". Also renamed the "cursor" index to "insert" and the "cursor" widget command to "icursor". This was done to avoid confusion between the mouse cursor and the insertion cursor. *** POTENTIAL INCOMPATIBILITY *** ---------------------- Release 3.0, 12/17/92 ------------------------- 12/17/92 (bug fix) Fixed dangling-pointer bug in canvases that occurred if a <LeaveNotify> binding deleted the current item. 12/18/92 (bug fix) Core dump occurred if "wm" invoked with no arguments. Also, tkWm.c wasn't properly setting WM_CLASS property on application startup. 12/18/92 (incorrect documentation) Updated manual entries for Tk_FreeGC, Tk_FreeCursor, and Tk_FreeBitmap to reflect new interface that requires "display" argument. 12/18/92 (missing documentation) Added documentation for the canvas "postscript" command, which was missing in the 3.0 release. 12/21/92 (bug fixes) There were lots of problems with the new installation targets in the Makefiles, such as using "cp -f" and not installing prolog.ps. Made several other miscellaneous improvements to Makefile. 12/21/92 (bug fix) Arrowheads on canvas line items weren't moving properly after coordinate changes made with the "coords" widget command. 12/21/92 (bug fix) If top-level window was initially withdrawn, couldn't ever deiconify it again. 12/21/92 (bug fix) Double-button event sequences didn't always trigger properly when grabs were in effect. 12/22/92 (bug fix) The packer didn't display any top or bottom windows after a left or right expanded window, and vice versa. Also made the distribution of space among expanded windows more even. 12/28/92 (new features) Several improvements to selection: (a) Added procedures Tk_ClearSelection and Tk_DeleteSelHandler. (b) Added "clear" and "own" options to "selection" command, extended "handle" option to delete handlers. (c) Error returns from "selection handle" scripts are now turned into selection retrieval errors ("no such selection") rather than an empty selection. (d) Tk responds automatically for targets APPLICATION (name of application, so you can "send" to it) and WINDOW_NAME (name of window within application. (e) Added test file "select.test" to test suite. 12/28/92 (bug fix) Fixed problem with flashing menus that occurred because menu.tcl was willing to unpost and then immediately repost the same menu. 1/6/93 (bug fix) Test for UnmapNotify events in tkPack.c used = instead of ==. 1/21/93 (bug fix) Changed many widgets to eliminate use of DefaultVisualofScreen, DefaultColormap, etc. and use the visuals and colormaps for the actual windows instead. Also changed to inherit colormaps and windows from parent by default. 1/21/93 (new features) Added new winfo options "cells", "depth", and "visual". 1/23/93 (bug fix) Fixed problem with text display that could result in negative XCopyArea heights being sent to X server. This causes some servers (e.g. some versions of OpenWindows) to crash. 1/25/93 (new feature) Added -postcommand option to menus, so that menus can be reconfigured before each posting. 1/29/93 (feature change) Changed %X and %Y in bindings so that they refer to the virtual root rather than the true root. Although potentially incompatible, this change should almost always "do the right thing". *** POTENTIAL INCOMPATIBILITY *** 1/31/93 (bug fix) Changed "send" code to grab server while updating the registry property (before this fix, two programs could allocate the same interpreter name if they started up simultaneously). In order to make this fix I had to change the code for reclaiming names of dead interpreters in a way that sometimes allows dead interpreters to persist in the registry. 2/1/93 (feature change) Changed entries to allow leftmost "visible" character to be the end of the text (i.e. no characters actually visible). This is needed so that the cursor can be displayed even if the last actual character is too wide to fit in the window. 2/3/93 (bug fix) Fixed two bugs in tkFocus.c: (a) FocusIn events were getting lost in some cases because the focus window hadn't been created yet (e.g. new top-level window pops up underneath the mouse); (b) Tk was accidentally triggering FocusOut events when the mouse moved from a top-level window to one of its children. 2/4/93 (new feature) Added "visibility" option to "tkwait" command to make it easier to wait for a new window to appear on the screen. ---------------------- Release 3.1, 2/5/93 ------------------------- 2/10/93 (installation improvements) Makefile improvements: added RANLIB variable for easier Sys-V installation, changed to use INCLUDE_DIR properly, and added SHELL variable for SGI systems. ---------------------- Release 3.2, 2/11/93 ------------------------- 2/11/93 (new feature) Added "wm state" command, and improved wm so that the right thing will happen if you invoke "wm iconify" when a window is withdrawn. 2/14/93 (bug fix) When -colormap option was used in generating Postscript for canvases, Tk didn't add an extra space after the color command. 2/14/93 (new feature) Changed "extern" declarations in tk.h to "EXTERN", which will use the definition of EXTERN from tcl.h and work correctly in C++ programs. 2/18/93 (bug fix) Item-specific bindings weren't getting deleted from canvas items when the items were deleted. As a result, they could suddenly re-appear for new items if the new items were allocated a record at the same addresses as the old ones. 2/18/93 (feature reversal) Changed "after" back again, so that it sleeps *without* responding to events when it is invoked with just one argument; can always use tkwait plus after with additional arguments to achieve the effect of responding to events. *** POTENTIAL INCOMPATIBILITY *** 2/20/93 (bug fix) Fixed bug in tkWindow.c where colormaps weren't being set correctly for new top-level windows on different screens than their parents (the bug results in X protocol errors: "invalid Colormap parameter"). 2/22/93 (bug fix) Changed "#!/usr/local/wish" in demo scripts to "#!/usr/local/bin/wish" to reflect new location of binary. 2/22/93 (new feature) Added new reliefs "groove" and "ridge". 2/25/93 (new feature) Added new built-in bitmaps: "error", "hourglass", "info", "question", "questhead", and "warning". Also added new demo in "widget" to display all of these (under the Miscellaneous menu). 2/25/93 (improved implementation) Changed DrawText procedure in prolog for outputting Postscript from canvases to use stringwidth instead of charpath+pathbbox: avoids limitcheck problems with long strings, and also properly includes space characters in calculation. 2/25/93 (bug fix) Fixed several bugs in library/menu.tcl that caused menu traversal to mis-behave when menu had no entries. 2/26/93 (new feature) Added "wm frame" command. 3/6/93 (bug fix) Mwm in click-to-focus mode was goofing up grabs so that pull-down menus were sometimes unresponsive. Modified tk.tcl to ignore the spurious B1-Enter events generated by mwm, plus modified tkGrab.c to release simulated button grabs correctly. 3/8/93 (bug fix) Tk had wrong interpretation of "lbearing" font metric, which caused text to be displayed at the wrong horizontal position in several places (labels/buttons, listboxes, canvas text, scales). This change will cause slight changes in the way certain widgets are displayed. 3/12/93 (bug fix) Fixed core dumps that occurred in tkEntry.c because of zero values in entryPtr->avgWidth. 3/12/93 (bug fix) Tk_CoordsToWindow was using root coordinates always. Changed to use virtual-root coordinates when a virtual-root window manager is being used. Before this fix, "winfo containing" didn't return the correct window under virtual-root window managers. 3/18/93 (bug fix) Modified tkWm.c so that Tk doesn't fight with window manager over position of window; it just takes what the window manager gives it. 3/21/93 (new feature) Changed menus to display cascade entries with standard Motif arrows at right side.a 3/22/93 (bug fix) Fixed bug in tkPack.c that was causing memory to get trashed with the integer value 1. 3/22/93 (bug fix) Canvas text didn't print correctly if it contained an open paren (or other special character) immediately followed by an octal digit. 3/22/93 (bug fix) Text widgets didn't redisplay properly in cases where two or more groups of lines both got taller at the same time (e.g. from tag changes), causing two separate bit copies where the first bit copy's target area overlapped the source area for the second bit copy. 4/1/93 (bug fix) Changed canvases to use ISO Latin-1 font encoding if that's supported by the Postscript interpreter. Also added workaround for bug in NeWSprint related to stipple fills. 4/1/93 (bug fixes) Made various changes to focusing and grabs to eliminate extraneous focus events and generally improve behavior. 4/2/93 (bug fix) Modified tkWm.c not to wait indefinitely for the window manager to map or reconfigure a window: this led to deadlock in some situations, such as creating a new top-level window with a grab held. 4/19/93 (bug fix) Fixed another bug in tkWm.c that caused windows to walk across the screen in some situations. Also fixed problem where rapid posting and unposting of cascaded submenus (or menus?) could cause Tk to become confused about whether or not a window is mapped (added TkWmUnmapWindow procedure to make top-level unmaps synchronous). 4/24/93 (feature change) Changed the "after" command to allow times less than or equal to 0, and to use 0 whenever they occur. 4/26/93 (new feature) Implemented security check for "send" as proposed by Bennett Todd: incoming sends are now rejected unless (a) xhost-style access control is enabled and (b) the list of authorized hosts is empty. In other words, you have to use xauth to use send. This feature can be disabled by setting the TK_NO_SECURITY flag at compile-time. 5/15/93 (improvement) Switched to use Tcl_PrintDouble whenever returning real values as Tcl results. This potentially allows higher precision. Switched to use %.15g whenever printing reals in Postscript files. However, the change Tcl_PrintDouble causes incompatibilities. For now, it's disabled with a macro in tclInt.h that redefines Tcl_PrintDouble. Tk 4.0 will delete the macro, and you can also delete it now if you want the better (but incompatible) behavior. 5/19/93 (bug fix) Fixed divide-by-zero problem that could occur in closeness calculations for canvas oval items. 5/30/93 (bug fix) PROP and CONFIG were accidentally #defined to the same value in tkBind.c, which could cause incorrect %-substitutions in event bindings in a few exotic cases. 6/4/93 (improvement) Changed to use GNU autoconfig for configuration. Makefile format changed, and Tcl is no longer automatically included in Tk releases. 6/7/93 (bug fix) Fixed off-by-one error in rounding negative coordinates during redisplay of canvases. 6/9/93 (feature improvement) Modified default bindings for entries to keep one character visible to the left of the cursor during backspaces. 6/18/93 (feature improvement) Added patchlevel.h, for use in coordinating future patch releases, and also added tk_patchLevel variable to make the patch level available in scripts. 6/26/93 (bug fix) Fixed numeric problems in scales that occurred with very large scale values. 6/26/93 (bug fix) Polygon items in canvases could cause core dumps if the "coords" widget command was used to add one new coordinate. 6/26/93 (bug fix) Changed canvases to handle large stipple patterns gracefully (stipples used to jump around during redisplay and lose coherency). 7/1/93 (syntax change, new feature) Implemented the new packer syntax as described in the book. For now the old syntax will continue to be supported too. Converting over is straightforward except (a) use "-anchor" instead of "frame", and (b) padding is different (separate internal and external padding, plus pad amounts are *on each side* instead of total). Also added "pack propagate" command for keeping the packer from setting the master's requested size. 7/1/93 Changed copyright notices. The effect is the same as with the old notices, but the new notices more clearly disclaim liability. 7/7/93 (new feature) Added support for window stacking order. Windows will now stack in the order created (most recent on top), plus "raise" and "lower" commands may be used to restack (Tk_RestackWindow procedure is available from C level). 7/7/93 (reorganization) Moved main.c to tkMain.c, reorganized it to call Tcl_AppInit just like tclsh does, and added argv0 variable to contain application name, and added default Tcl_AppInit procedure for wish. Also added tkTest.c to hold C code for testing. 7/7/93 (new feature) Added new Tk-specific "exit" command, which cleans up properly before exiting. It replaces the Tcl "exit" command, and can be used in place of "destroy .". 7/9/93 (new features) Added tk_dialog library procedure that creates dialogs with a bitmap, message, and any number of buttons. Also changed default tkerror procedure to use tk_dialog plus offer the user a chance to see a Tcl stack trace. -------------------- Release 3.3 Beta 1, 7/9/93 ------------------------- 7/12/93 (configuration changes) Eliminated leading blank line in configure script; provided separate targets in Makefile for installing binary and non-binary information; fixed -lnsl and -lsocket handling in configure; added autoconf support for fd_set type; check for various typedefs like mode_t and size_t, and provide substitutes if they don't exist; don't include tkAppInit.o in libtk.a; try to locate the X includes and library in all of the standard places for various systems. 7/14/93 (new feature) Modified tkMain.c so that it stores the value of the -display command-line option into the DISPLAY environment variable, if it is specified. 7/15/93 (feature removal) Removed auto-initialization feature from Tk_ConfigureWidget, so that you must once again initialize all fields of a widget record before calling Tk_ConfigureWidget. This restores the behavior back to what it was in Tk 3.2. 7/16/93 (bug fix) Modified tkBind.c to ignore the Caps Lock modifier unless it is explicitly requested in a binding. Without this fix, buttons and menus and other things didn't work if the Caps Lock key was active. -------------------- Release 3.3 Beta 2, 7/21/93 ------------------------- 7/21/93 (new feature) Change "make install" so that it will modify the #! lines on demo scripts to reflect the place where the wish binary is installed. 7/23/93 (new feature) Added Tk_MainWindow procedure that returns the main window associated with a Tcl interpreter. This is intended for use by Tcl_AppInit and other initialization procedures. 7/24/93 (configuration improvements) Changed configure script not to omplain about "fd_set" missing if it's defined in <sys/select.h>. 7/28/93 (bug fix) "Bad Match - parameter mismatch" errors were sometimes occurring when several top-level windows got created at the same time, due to wrong choice of sibling when stacking windows. 8/14/93 (new feature) Added support for tcl_prompt1 and tcl_prompt2 to wish main program: makes prompts user-settable. 8/19/93 (bug fix) Bindings to event sequences like "aD" never matched because the Shift key has to be pressed before D. Modified Tk to ignore extraneous keypresses if they are for modifier keys. 8/26/93 (configuration changes) Added Tk_Init, modified Tcl_AppInit procedures to use it and Tcl_Init. Added support for .wishrc file. 8/28/93 (new feature) The main window is now a legitimate toplevel widget. -------------------- Release 3.3 Beta 3, 8/30/93 ------------------------- 9/2/93 (bug fix) The packer wasn't always relaying out a master after changes to some of the configuration options of its slaves. 9/2/93 (bug fix) The binding mechanism made it impossible for patterns like <Double-ButtonRelease-1> to ever match. 9/2/93 (bug fix) Fixed core dump that occurred for bitmap canvas items if Postscript is generated but no -bitmap option has been specified. 9/4/93 (enhancement) Slight improvements to menu traversal: set menu traversal bindings for menubar window in tk_menuBar, plus trigger traversal on <Any-Alt-Keypress> instead of <Alt-Keypress>. 9/9/93 (bug fix) Changed tkBind.c so that the Num_Lock key doesn't prevent events from triggering bindings. 9/9/93 (bug fix) Changed tkOption.c to always fetch RESOURCE_MANAGER property from root window of screen 0, rather than using default screen. 9/9/93 (bug fix) Entry widgets weren't allocating quite enough width for themselves. Fixed this and changed the size computation to match what's done for buttons and texts. 9/16/93 (bug fix) Changed tkMain.c not to call exit C procedure directly; instead always invoke "exit" Tcl command so that application can redefine the command to do additional cleanup. -------------------- Release 3.3, 9/29/93 ------------------------- 9/30/93 (bug fix) Packer wasn't unmapping slaves when master got deleted. 9/30/93 (bug fix) Binding event sequences such as <Right> were being misprinted as ASCII characters such as "S". 10/6/93 (bug fix) Canvases weren't unmapping window items when the canvas got unmapped, which caused problems for window items whose windows weren't descendants of the canvas (they got left on the screen). 10/7/93 (feature change) NULL proc arguments to Tk_CreateFileHandler used to have a special undocumented meaning (fd was display); eliminated this special interpretation. 10/7/93 (configuration change) Eliminated dependency of tkMain.c on tkInt.h and tkConfig.h, so that it's easier for people to copy the file out of the source directory to make modified versions. 10/8/93 (bug fix) 3.0 introduced a bug where the class of the application wasn't being set properly, so options based on the application class weren't triggering. Fixed by adding new argument to Tk_CreateMainWindow. 10/11/93 (bug fix) Fixed bug in tkTextBTree.c where some deletions would cause core dumps due to halfwayLinePtr not getting set correctly. 10/18/93 (bug fix) Fixed a couple of bugs that made it hard to actually display N characters in an entry with "-width N" (tended to scroll the entry so that only N-1 characters were visible at once). 10/22/93 (bug fix) During configuration, XINCLUDE_DIR and XLIBRARY_DIR weren't overriding xmkmf like they were supposed to. 10/23/93 (new feature) Allow negative scale factors in canvas "scale" widget command. 10/23/93 (bug fix) Grabs weren't being cleaned up right if the grab window was deleted, causing core-dumps in some cases. 10/23/93 (bug fix) tk_TextSelectTo wasn't checking to be sure that the "anchor" mark exists. 10/27/93 (bug fix) Fixed core dump that could occur in a text widget if the scroll command modifies the text. 11/1/93 (bug fix) Change texts so that the -yscrollcommand option is invoked at display time, not when the window is re-layed out. This eliminated various core dumps that could occur if -yscrollcommand modified the text. -------------------- Release 3.4, 11/04/93 ------------------------- Note: there is no 3.5 release. It was flawed and was thus withdrawn shortly after it was released. 11/12/93 (bug fix) TkMain.c didn't compile on some systems because of R_OK in call to "access". Changed to eliminate call to "access". -------------------- Release 3.6, 11/26/93 ------------------------- 11/10/93 (bug fix) Packer and placer didn't always reposition a window correctly if it was managed inside a neice or lower descendant (using "-in" option) and the neice's parent moved. 11/24/93 (bug fix) Fixed time problem in selection (retrievals could fail if retriever hasn't received any X events since selection was made, so that time of retrieval appears to be older than time of selection). Selection code is now much less picky about times, both on retrieving and supplying sides. 12/2/93 (new feature) Changed arrow-head drawing code for canvas lines to draw a 0-width outline in addition to filling the area: this produces much nicer, more symmetrical displays. 12/2/93 (bug fix) When colors ran out, Tk was invoking "tkerror" when its state was internally inconsistent, which could cause core dumps in some situations (e.g. if tkerror used the same color that caused colors to run out). Changed notification to occur as a when-idle handler. 12/3/93 (bug fix) During a global grab, Tk wasn't including PointerMotion in the list of grabbed events, so pointer motion couldn't be tracked outside the grabbing application. 12/3/93 (bug fix) Canvases didn't handle smoothed lines correctly when they only contained two points. 12/3/93 (bug fix) Fixed bug in tkWindow.c where certain kinds of errors during window creation could cause Destroy events to be generated for a window that was never completely initialized. 12/13/93 (bug fix) Fixed bug in tkTextDisp.c that resulted in core dumps at line 1467 under exmh. The exact situation is that a text widget was being redisplayed at a time when it had a -yscrollcommand option but hadn't yet been mapped onto the screen. 12/17/93 (bug fix) Fixed bug in tkWindow.c whereby new top-level windows with non-default visuals still inherited border pixmap from parent (root), which could cause visual clash and X error. 12/17/93 (bug fix) Fixed bug in tkTextDisp.c that caused round-off error in the information passed to scroll commands. 12/18/93 (bug fix) Fixed bug in tkPack.c that caused core dumps in some situations if a master with siblings packed "-in" it was deleted. 12/18/93 (bug fix) Added "compat" directory to distribution, since it's referenced by tkConfig.h on some systems. 12/18/93 (performance improvement) Improved performance of appending to a listbox, so that inserting N items doesn't take N**2 time. 12/20/93 (bug fix) Fixed bug in canvas ovals that caused the fill color for the oval to stick out past the outline. 1/2/94 (fixed Xlib bug) Added code to reuse X resource identifiers so that they won't run out in long running applications. There are three new library procedures: Tk_FreeXId, Tk_GetPixmap, and Tk_FreePixmap. Modified all Tk code to use these procedures, so wish applications should now be able to run forever without running out of identifiers. 1/10/94 (bug fix) tkCursor wasn't freeing pixmaps used to create cursors, which caused memory leaks in programs that changed cursors frequently. 1/21/94 (bug fix) Fixed bug in scales that caused them to loop infinitely drawing tick-marks when -from and -to were the same. 2/2/94 (bug fix) Fixed problem where messages that contained tabs didn't always compute the correct size, so that text spilled off the right edge. The fix adds an extra "tabOrigin" parameter to the internal procedures TkMeasureChars, TkDisplayChars, and TkUnderlineChars. 2/4/94 (bug fix) Fixed off-by-one problem in tkBind.c that caused it to read past the initialized part of dispPtr->modKeyCodes. 2/7/94 (bug fix) Text widgets didn't handle grabs correctly, such that the "current" character got stuck if a grab occurred while a mouse button was down. It would get unstuck until after the next button press and release. 2/19/94 (bug fix) Fixed prolog.ps (prolog for Postscript printing from canvases) so that it correctly prints all of the characters in the ISO Latin-1 character set. 2/19/94 (bug fix) Modified tkBind.c to save and restore the interpreter's result across the execution of binding scripts. Otherwise if an event triggers in the middle of some other script (e.g. a destroy event during window creation, because there was an error in the creation command), the intepreter's result gets lost. 2/19/94 (bug fix) Fixed bug in dealing with results of sent command that could cause them to get lost in some situations. 2/21/94 (bug fix) Don't let user close a dialog window created by tk_dialog, since this would cause tk_dialog to hang: force the user to select one of the dialog's buttons. 2/21/94 (bug fix) Fixed bug in canvas polygons whereby they didn't correctly handle changes in the number of points (via "coords" widget command). 2/23/94 (bug fix) Large bitmaps in canvases didn't print correctly because they overflowed the 64-KB limit on strings in Postscript. Changed canvas printing to split up large bitmaps into mutliple smaller ones for printing. 2/25/94 (bug fix) The "." window was being set up with -width and -height options, which interfered with geometry management (any configuration change on "." causes the window to change size to 200x200, then change back again). 2/26/94 (bug fix) Fixed several bugs that occurred when a Destroy event handler for a window deleted the window's parent. 3/3/94 (new features) Changes to binding mechanism: - The modifiers for "Alt", "Meta", and "M" are now computed by examining the modifier map, rather than being hardwired to M2, M1, and M1. - When processing events, one script is invoked for each object in the list passed to Tk_BindEvent, rather than stopping as soon as a script is invoked for some object. The "break" and "continue" commands can be used within a script to abort all scripts for the event or the current one. *** POTENTIAL INCOMPATIBILITY *** - Added "bindtags" command so that new binding groups can be defined for widgets and the evaluation order can be changed. - When matching events to bindings, extra modifiers are now ignored, as if "Any" were specified for every event. The "Any" modifier is still recognized, but it is ignored and is deprecated. *** POTENTIAL INCOMPATIBILITY *** - In % sequences that print window identifiers (e.g. %a and %S), print in hexadecimal rather than decimal, for consistence with "winfo id". *** POTENTIAL INCOMPATIBILITY *** - The "bind" command no longer supports the event types CirculateRequest, ConfigureRequest, MapRequest, or ResizeRequest. These event types are somewhat dangerous, and they never worked anyway. 3/13/94 (bug fix) Fixed numerous problems with the "wm iconwindow" command. It appears that this command never really worked at all, but it should work OK now. 3/14/94 (feature changes) Removed several obsolete features: - Eliminated "enable" and "disable" widget commands for menus. *** POTENTIAL INCOMPATIBILITY *** - Eliminated "activate" and "deactivate" widget commands for buttons, checkbuttons, radiobuttons, and menubuttons. *** POTENTIAL INCOMPATIBILITY *** - Removed -geometry option for frames and toplevels: it causes problems when .Xdefaults files contain entries like "*geometry: +0+0". Must use -width and -height instead. *** POTENTIAL INCOMPATIBILITY *** - Desupported "tkVersion" variable: use "tk_version" instead. *** POTENTIAL INCOMPATIBILITY *** 3/16/94 (feature changes) Changes to listboxes: - Eliminated -geometry option (it causes problems when .Xdefaults files contain entries like "*geometry: +0+0"). Added -width and -height options to use instead. *** POTENTIAL INCOMPATIBILITY *** 3/21/94 (bug fix) Fixed bug in tkOption.c where the option cache wasn't properly cleaned up after window deletion; this could cause the wrong value from the option database to be used under some conditions. 3/25/94 (new features) Changes to geometry management: - Added Tk_MaintainGeometry and Tk_UnmaintainGeometry procedures to solve problems with -in windows. Modified the packer, the placer, and canvases to use them. - Changed 2nd argument to Tk_ManageGeometry from Tk_GeometryProc * to a pointer to a structure with additional information about the geometry manager, such as name and procedure to call when slaves are stolen. *** POTENTIAL INCOMPATIBILITY *** 3/28/94 (new feature) Overhauled event management: - Added "cancel" option to the "after" command so that you can cancel previously-scheduled commands. - Separated X-specific stuff from generic event management. The file tkEvent.c can now be used stand-alone without the rest of Tk. See the manual entry for Tk_EventInit for information on which procedures are available this way. - Added Tk_CreateFileHandler2 procedure, which provides a lower-level and more powerful form of file event handler. - Fixed bug in Tk_DoOneEvent where an infinite loop could occur if the TK_FILE_EVENT and TK_DONT_WAIT flags were set simultaneously (there were bugs with several other combinations too; all should be fixed now). 3/28/94 (new feature) Added "fileevent" command, which allows event- driven I/O in the style of Mark Diekhans' "addinput" command. 4/11/94 (new feature) Better support for colormaps and visuals: - Added new -colormap and -visual options to toplevels and frames. - Added "winfo visualsavailable" command. - Added "wm colormapwindows" command, plus support for WM_COLORMAP_WINDOWS to Tk_SetWindowColormap. - Added new library procedures Tk_GetVisual, Tk_GetColormap, and Tk_FreeColormap. 4/11/94 (bug fix) Fixed core dump that used to occur when specifying an iconwindow ("wm iconwindow") for a toplevel on a different screen than the main window. 4/23/94 (new feature) Added support for images, including the following: - New "image" command for creating images. - Built-in image type: bitmap. - New "image" item type in canvases. - Labels, buttons, checkbuttons, radiobuttons, menubuttons, and menu entries now support a -image option for displaying images. - Tk_CreateImageType and Tk_ImageChanged procedures, for defining new types of images in C. - Tk_GetImage, Tk_FreeImage, Tk_RedrawImage, and Tk_SizeOfImage procedures, for using images in widgets. 5/1/94 (new features) Added new procedures Tk_3DVerticalBevel and Tk_3DHorizontalBevel. 5/11/94 (new features) Major overhaul of text widgets: - Implemented embedded windows and "window" widget command. - Added new configuration options for tags: -justify, -lmargin1, -lmargin2, -rmargin, -offset, -spacing1, -spacing2, and -spacing3. See the "Display styles" widget demo for examples. - Added new configuration options for texts: -spacing1, -spacing2, and -spacing3. - Added "tagList" option to "insert" widget command to control tags on new text. Made tagged regions so they aren't sticky on either side: new characters get a tag only if the old chars. on both sides had it. *** POTENTIAL INCOMPATIBILITY *** - Added gravity for marks, and "mark gravity" widget command. - Added horizontal scrolling, "xview" widget command, -xscrollcommand option. Changed "scan" widget commands to support horizontal scrolling. *** POTENTIAL INCOMPATIBILITY *** - Added "search" widget command for searching (either exact matches or regular expressions). - New widget commands: bbox, dlineinfo, and see. - Changed implementation of bindings so that Enter and Leave events are not generated unless the tag has just become present (or just ceased to be present) on the current character. Also changed bindings to process separately for each tag, rather than having high-priority tags override low-priority ones. - The "end" index now refers to the character after the last newline rather than the newline itself. You can now tag the final newline and set a mark after the final newline. - Deletions of the "sel" tag and the "insert" and "current" marks are now ignored silently, rather than generating errors. This means you can do things like "eval .t tag delete [.t tag names]". 5/19/94 (bug fix) Canvases didn't generate proper Postscript for stippled text. 5/20/94 (new feature) Added "bell" command to ring the display's bell. 5/20/94 (new feature) Incorporated "square" demonstration widget into tktest application. 5/20/94 (new features) Changed wish application (tkMain.c): - wish no longer processes the -help option. *** POTENTIAL INCOMPATIBILITY *** - The wish main program is now called Tk_Main; tkAppInit.c has a "main" procedure that calls Tk_Main. This makes it easier to use Tk with C++ programs, which need their own main programs, and it also allows an application to prefilter the argument list before calling Tk_Main. *** POTENTIAL INCOMPATIBILITY *** - The application's class is now the same as its name (except the first letter is capitalized), instead of "Tk". *** POTENTIAL INCOMPATIBILITY *** - The -file keyword is no longer required: the script file name can be provided as the first argument without being preceded by "-file", as in tclsh. For backward compatibility the "-file" keyword is ignored if it is the first argument, but it is deprecated. 5/26/94 (feature removed) Removed support for "fill" justify mode from Tk_GetJustify and from the TK_CONFIG_JUSTIFY configuration option. None of the built-in widgets ever supported this mode anyway. *** POTENTIAL INCOMPATIBILITY *** 5/27/94 (feature change) Changed Tk to use Tk_PrintDouble everywhere that it converts reals to strings. This means that floating-point values will be generated in some cases where integer-like values were generated before. *** POTENTIAL INCOMPATIBILITY *** 6/1/94 (feature change) Renamed "pack newinfo" command to "pack info". The old "pack info" command is no longer available. *** POTENTIAL INCOMPATIBILITY *** 6/20/94 (feature changes) Overhaul of entry widgets: - Added "-justify" option. - Added "-show" option to make entries easier to use for passwords. - Added "cget" widget command. - Added "selection range" and "selection present" widget commands. - Added "anchor" symbolic index. - Changed "-scrollcommand" option to "-xscrollcommand", "view" widget command to "xview", for compatibility with other widgets. *** POTENTIAL INCOMPATIBILITY *** - Changed sel.last to refer to character just *after* last one selected, again for compatibility with other widgets. *** POTENTIAL INCOMPATIBILITY *** - For "delete" widget command, second index now refers to character just *after* last one to delete. *** POTENTIAL INCOMPATIBILITY *** - Overhauled bindings to be more Motif-compatible and to include common Emacs bindings for editing. - Changed -width option: if specified as 0, widget sizes to fit its current text. 6/11/94 (new features) Improved Motif compatibility: - Added "-highlightwidth" and "-highlightcolor" options to all widgets. 6/27/94 (bug fix) Postscript generation for text items in canvases was not justifying the text properly when a -width was specified that was longer than the longest line. 6/27/94 (bug fix) "winfo exists" used to report a window as existing if it was in the process of being destroyed (i.e., a destroy handler is in the middle of execution). Changed to report it as non-existent under these conditions. *** POTENTIAL INCOMPATIBILITY *** 7/11/94 (bug fix) Selections claimed via "selection own" weren't always being cleared properly when the selection was claimed away. Also fixed bug where Tk wasn't properly claiming the selection, if there haven't been any recent X events at the time of the claim. 7/13/94 (feature changes) Overhaul of scrollbar widgets: - New widget commands: "activate", "cget", "fraction", and "identify". - New options: -activebackground, -activerelief, -highlightcolor, -jump, -highlightthickness, and -troughcolor. What used to be -background is now -troughcolor, -foreground is now -background, and -activeforeground is now -activebackground. *** POTENTIAL INCOMPATIBILITY *** - Added new syntax for "set" command, "get" result, and generated commands. Changed other widgets to use the new syntax. - Moved the bindings out of C and into Tcl scripts, using the new options and widget commands. Added support for all Motif bindings, plus jump scrolling and cancelling of slider drags. 7/16/94 (bug fix) Canvases assumed that the Leave event for one item didn't modify or delete the next current item; this could cause core dumps under some conditions. 7/23/94 (feature change) Modified Tk_BackgroundError so that tkerror is invoked as an idle handler. If tkerror generates a break exception then all other queued reports are aborted. 8/14/94 (bug fix) "cursorOffTime" and "cursorOnTime" were confused in canvases, resulting in the same time being used for both. 8/16/94 (bug fix) "tkwait variable" command didn't detect errors in variable name, such as trying to wait for an entire array. 9/2/94 (new features) Overhaul of scale widgets: - Floating-point values are supported now, following Paul Mackerras' "fscale" widget. Added "-resolution" and "-digits" options. - Added "-variable" option to link scale to variable, following Henning Schulzrinne's implementation. - Added focus highlight (-highlightthickness and -highlightcolor options). - Added new widget commands "cget", "coords", "identify", plus improved "get"; removed wired-in bindings, added complete set of Motif bindings via Tcl scripts. - Changed -sliderforeground option to -background, -background to -troughColor, -activeforeground to -activebackground. *** POTENTIAL INCOMPATIBILITY *** - Moved value label from below horizontal scales to above the scale, for Motif compliance. 9/9/94 (bug fix) Fixed bug in tkWm.c that caused long delays in "raise" command under some conditions (window already at the top of the stack). 9/10/94 (new features) Overhaul of label/button/checkbutton/radiobutton widgets: - Added focus highlight (-highlightthickness and -highlightcolor options). - Added new widget command "cget". - Changed -selector option to -selectcolor, and changed its meaning too: empty no longer means don't draw the indicator; it means don't use a special color when selected. *** POTENTIAL INCOMPATIBILITY *** - Added -indicatoron (controls whether indicator is displayed) and -selectimage (gives special image to display when selected) options. - Modified bindings to be more Motif-like, added binding for space key. - Changed padding defaults to give widgets correct Motif appearance by default. Also, changed to ignore padding options when displaying an image or bitmap. *** POTENTIAL INCOMPATIBILITY *** - Can now display text on multiple lines: newlines cause line breaks, and word wrapping can be requested with -wraplength option. Also added -justify and -underline options. - The -value option for radiobuttons can now have an empty string as its value; it no longer defaults to the name of the widget. *** POTENTIAL INCOMPATIBILITY *** 9/13/94 (new features) Modified both canvases and messages to support -highlightthickness and -highlightcolor options plus "cget" widget command. 9/19/94 (new features) Added Tk_UnsetGrid procedure, modified widgets to use it. Also changed Tk_SetGrid so that at most one window per toplevel can have gridding enabled. 9/23/94 (new features) Major overhaul of listbox widgets: - Added focus highlight (-highlightthickness and -highlightcolor options). - Added new widget command "cget". - Revised selection commands to support single selections as well as multiple disjoint selections; syntax of "selection" widget command has changed to support this. Added new option -selectmode for specifying which mode to use. Default is single selection; tk_listboxSingleSelect procedure no longer exists. Selections now return as items separated by newlines instead of a list whose elements are the items. *** POTENTIAL INCOMPATIBILITY *** - Extended "get" widget command to allow many items to be retrieved at once. - Added "bbox" widget command for finding position of an element on screen. - Added "activate" command to mark element with traversal focus. - Extended index mechanism to support new types of indices: "active", "anchor", "@x,y". - Added "see" widget command. - Revised bindings to include all Motif features except for AddMode. - If -width or -height option is <= 0, the widget requests a size just large enough to hold all of its text. 10/6/94 (new features) Overhaul of menubuttons: - Added focus highlight (-highlightthickness and -highlightcolor options). - Added new widget command "cget". - Added -indicatoron option to display option menu indicator. - The -menu option must be a child of the menubutton. *** POTENTIAL INCOMPATIBILITY *** 10/6/94 (new features) Overhaul of menu widgets: - Added new widget commands "cget" and "entrycget". - Changed the implementation of tear-off menus to be more Motif-like; added -tearoff option for specifying whether tearoff entry is displayed. - Changed interpretation of "@y" index: it now returns the closest entry, rather than "none" if y is outside the menu's range. *** POTENTIAL INCOMPATIBILITY *** - The -menu option for a cascade entry must now be a child of the menu. *** POTENTIAL INCOMPATIBILITY *** - Added "type" widget command, so that you can query the type of an entry. - Added -foreground, -activeforeground, -selectcolor, -indicatoron, -image, and -selectimage options to menu entries. - Changed "selector" menu option to "selectColor" for Motif compliance. *** POTENTIAL INCOMPATIBILITY *** - Added -relief option for menus, just for consistency with other widgets (it was implicitly "raised" before). 10/6/94 (feature change) Completely overhauled the bindings for menus and menubuttons. They now fit better with other Tk 4.0 facilities, such as the new binding mechanism, and they provide better Motif compliance (e.g. keyboard traversal of submenus). Also, the bindings now support option menus, popup menus, and proper Motif tear-off menus. 10/6/94 (obsolete features) The procedures tk_menuBar and tk_bindForTraversal are no longer needed in Tk 4.0. They still exist for compability, but they do nothing. 10/6/94 (new procedures) Added "tk_popup" procedure for posting a popup menu, and "tk_optionMenu" for creating an option menubutton and its associated menu. 10/6/94 (change in name) The variable "tk_priv" has been renamed to "tkPriv" to reflect that fact that it is private to Tk now. This shouldn't cause any problems, since no-one except Tk should have been using it before anyway (right?). 10/6/94 (bug fix) Fixed bug in texts where sometimes the text would stop tracking mouse motion (the "current" item wouldn't get updated) because the text widget missed a ButtonRelease event. 10/20/94 (new features) Overhauled selection code to support multiple selections (primary, secondary, etc.) and multiple displays: - Changed "selection" command to support new options such as "-displayof" and "-selection". Old command formats are still supported for compatibility, but they are no longer documented and are deprecated. - Changed procedures Tk_GetSelection, Tk_CreateSelHandler, and Tk_ClearSelection to take additional "selection" argument. *** POTENTIAL INCOMPATIBILITY *** - Selection targets APPLICATION and WINDOW_NAME have been replaced by TK_APPLICATION and TK_WINDOW. *** POTENTIAL INCOMPATIBILITY *** 10/20/94 (new features) Added support for clipboard: - New "clipboard" command. - C procedures Tk_ClipboardClear and Tk_ClipboardAppend. - Bindings for "cut", "paste", and "copy" for text and entry widgets, plus "copy" binding for listboxes. 10/24/94 (bug fix) Button widgets weren't checking for errors when setting the values of associated variables. 11/3/94 (bug fix) Fixed bug whereby Tk would hang if "exit" was invoked from inside a <Destroy> binding. 11/15/94 (new features) Overhaul of focus mechanism: - Added support for multiple displays: separate focus windows are kept for each display. - Added support for keyboard traversal. - Changed focus model so Tk keeps track of a focus window for each top-level window and automatically sets the focus on Enter to the top-level. Tk no longer synthesizes FocusIn and FocusOut events, but just uses the standard X mechanisms. There is no "default" focus window anymore; the focus reverts to top-levels by default. *** POTENTIAL INCOMPATIBILITY *** - Changed focus command: eliminated "focus default" and "focus none", added "-displayof" and "-lastfor" options. An empty string is now used to signify "no focus" instead of "none". *** POTENTIAL INCOMPATIBILITY *** - Added library procedures tk_focusNext, tk_focusPrev, and tk_focusFollowsMouse. - Removed obsolete Tk_CreateFocusHandler: must use FocusIn and FocusOut events now. *** POTENTIAL INCOMPATIBILITY *** 11/23/94 (new features) Overhaul of "send" command: - Added support for multiple displays: -displayof option to "send". - Added asynchronous sends: -async option to "send". - Eliminated fixed timeouts on sends: as long as the target application appears to exist, the send will wait for it. - Stale entries get removed from the application registry now, so "winfo interps" should never return non-existent applications. - Can change the name of an application with "tk appname" command. This is also the preferred way of querying the application name now. - The errorCode and errorInfo variables are now propagated back to the sender now, so a full stack trace is available. - Tk checks display security on each send now, instead of just during initialization, so changes in the security status are seen immediately by all applications. - The above changes required changes to the data formats used for communication between source and target applications, so Tk 4.0 applications cannot send to, or be sent from, Tk 3.6 applications. *** POTENTIAL INCOMPATIBILITY *** - The procedure Tk_RegisterInterp has been replaced with Tk_SetAppName. *** POTENTIAL INCOMPATIBILITY *** 12/6/94 (cleanup) Eliminated "interp" argument to Tk_GetColorByValue, since it is no longer needed. *** POTENTIAL INCOMPATIBILITY *** 12/7/94 (feature change) Changed the "wm" command so that top-level windows are now resizable by default. You can no longer specify empty arguments to "wm maxsize" and "wm minsize". *** POTENTIAL INCOMPATIBILITY *** 12/8/94 (new feature) Added new "photo" image type using code provided by Paul Mackerras: currently supports only PPM "P6" format images. 12/14/94 (new features) Canvas modifications: - Modified the interfaces between generic canvas code and the item types so that it's easy for people to write new item types outside of Tk. - Added support for transparent bitmap items: just specify an empty string as the background color. - Changed the "xview" and "yview" commands for canvases to use the new scrolling syntax. - Eliminated -scrollincrement option. *** POTENTIAL INCOMPATIBILITY *** 12/14/94 (bug fix) Fixed bug where the dimensions of canvas arrowheads scaled during a "scale" widget command, but the scaling was only temporary and got lost on the next re-configure of the item. The correct behavior is for the arrowheads not to scale. -------------------- Release 4.0b1, 12/23/94 ------------------------- 12/26/94 (bug fix) Removed obsolete demos from Makefile (color, dialog, size), fixed "install" target. 1/3/95 (bug fix) Fixed all procedure calls to explicitly cast arguments: implicit conversions from prototypes don't work when compiling under non-ANSI compilers. Tk is now clean under gcc -Wconversion. 1/4/95 (bug fix) Used "screenX" without ever setting it in DisplayText in tkCanvText.c: caused tabs in canvas text items to get messed up. 1/4/95 (bug fix) Canvases forgot to register the built-in types if Tk_CreateItemType was called before a canvas widget was created. 1/4/95 (bug fixes) Fixed glitches in various text bindings: - Up used to do nothing if the cursor was at 2.0. - Right used to make the cursor invisible if it was just before the final newline of the text. - Control-t didn't conform to Emacs; made it conform to GNU Emacs. - Deleted Control-x binding, since it doesn't conform to anything and is confusing for Emacs users. 1/4/95 (bug fixes) Changed Control-t for entries just as for texts (see above) an deleted Control-x for entries (see above). 1/4/95 (bug fix) The packer didn't map slaves unless the master was mapped; this could cause slaves to get "lost" so that they weren't mapped until the master resized. 1/5/95 (bug fix) Scrollbars weren't executing the proper code the first time the mouse entered the widget; this caused problems if tk_strictMotif was set. 1/6/95 (bug fix) Fixed label/button/checkbutton/radiobutton/menubutton widgets to allow arbitrary screen distances when specifying -width and -height for an image or bitmap (the manual pages already documented this but the code didn't implement it). 1/6/95 (new feature) Added very primitive support for input methods, as suggested by Martin Forssen. This should be enough for European character sets (Compose key) but it isn't near enough for Asian character sets. 1/8/95 (bug fix) Fixed problem in canvas "xview" and "yview" commands where divide-by-zero errors could sometimes occur. 1/8/95 (bug fix) New event handler didn't properly handle files for which both TK_READABLE and TK_WRITABLE were specified. 1/11/95 (bug fix) Fixed bug with text selections: was returning count too high for data, causing bogus garbage to appear when selection was copied. -------------------- Release 4.0b2, 1/12/95 ------------------------- 1/27/95 (feature removal) Removed %D substitution from binding scripts: wasn't portable, shouldn't be used anyway. *** POTENTIAL INCOMPATIBILITY *** 1/27/95 (new features) Added -displayof options to the commands "winfo atom", "winfo atomname", "winfo containing", "winfo interps", and "winfo pathname". 1/27/95 (new feature) Added "idle" option to "after" command to run scripts as idle handlers. 1/28/95 (new feature) Modified placer to make -x and -relx additive if you specify both. Same for -y and -rely, -width and -relwidth, and -height and -relheight. This makes it easy to make request such as "make .a 2 pixels larger than .b". *** POTENTIAL INCOMPATIBILITY *** 1/28/95 (new feature) Improved auto-grab mechanism in canvases (which prevents current item from changing while a button is down): changed to report Enter and Leave events for the current item while a button is down. However, as before, no Enter events are reported for other items until the button goes up. 1/28/95 (new feature) Bitmap images are now transparent if the -background is specified as an empty string (-maskdata and -maskfile are ignored in this case). This is also the default. 1/28/95 (bug fix) Tk didn't support manufacturer- or site-specific keysyms such as SunAudioMute. Modified tkBind.c so that it uses XStringToKeysym in addition to its own hash table, so that all keysyms are now available. 1/30/95 (feature change) Modified "clipboard append" so that it reclaims the clipboard selection if it had been previously lost, rather than just generating an error. This handles certain race conditions more cleanly, and also allows the use of programs like "xclipboard". 1/30/95 (new feature) Added -xscrollincrement and -yscrollincrement options to canvases. 1/31/95 (bug fix) Geometry management was broken if a particular geometry manager claimed a slave away from itself. 1/31/95 (bug fix) Fixed bug in tkVisual.c where a visual with fewer bits than requested was being selected in preference to one with just the right number of bits. 1/31/95 (bug fix) Texts weren't redisplaying the padding region properly after changes in -padx or -pady. 1/31/95 (new features) More text improvements: - Extended "insert" widget command for texts to allow multiple text-tagList pairs in the same command. - Added -nocase option to "search" widget command. - Added -overstrike option to tags. - Added tab stops, via -tabs option for widget and for tags. 2/10/95 (bug fix) Modified all widgets to allow renaming of widget commands. Deleting a widget command will delete the widget. 2/11/95 (new feature) Added -highlightbackground option to all widgets. 2/14/95 (new feature) Added "insert" widget command for menus. 2/15/95 (new feature) Modified text display code (for all widgets) to display well-known control characters like newline and backspace as \n or \b instead of \xa. 2/15/95 (bug fix) Modified bitmap and photo image managers to delete the image command when the image is deleted. Also modified them to allow renaming of the image command, and to delete the image if the image command is deleted. 2/15/95 (bug fix) Fixed text widgets to allow horizontal scrolling even if wrapping was enabled, if a line isn't entirely visible due to a large character or embedded window. 2/16/95 (feature change) Added "postcascade" widget command to menus, changed "invoke" and "activate" not to post or unpost submenus. Also fixed bug in redisplay that tended to leave bits of garbage on menu when submenu unposted. *** POTENTIAL INCOMPATIBILITY *** 2/16/95 (feature removal) Removed "snap back" behavior (slider snaps back to old position if you move the mouse outside the widet before releasing the button) from scrollbars and scales. 2/16/95 (bug fix) The last line of a listbox wasn't being displayed if it was only partially visible. 2/16/95 (new features) Added support for "-resolution 0" (no rounding of values) to scale widgets, plus smarter computation of how many digits to display. 2/17/95 (bug fix) Fixed bug in text bindings for things like Shift-Left: didn't properly set the anchor position. 2/20/95 (bug fix) Changed management of COLORMAP_WINDOWS property to add the toplevel implicitly to the end of the list if it wasn't already on the list somewhere. Without this, some window managers implicitly put it at the front of the list, so that colormaps in internal windows are never used. 2/20/95 (bug fix) Changed to use separate command procedures for button, checkbutton, label, and radiobutton commands. This allows the class commands to be renamed without breaking their behavior. 2/20/95 (removed feature) The "bind" command no longer supports "Keymap" events; they never worked anyway. 2/20/95 (bug fix) The text "search" widget command looped infinitely when searching an empty text. 2/20/95 (bug fix) Canvases weren't redrawing their borders after configuration changes. 2/20/95 (upgrade) Changed to use autoconf version 2.2. 2/21/95 (bug fix) Fixed several bug fixes in menu bindings that occur when menus have no entries. 2/21/95 (bug fix) Fixed bug in geometry management that caused windows packed -in siblings to not always be mapped and unmapped properly (particularly when the toplevel got unmapped and mapped). 2/22/95 (bug fix) Fixed resource leak problem in tkTextDisp.c that caused embedded windows not to be unmapped when off-screen. 2/23/95 (bug fix) "After cancel" dumped core when the script for an after event cancelled itself. 2/24/95 (bug fix) Text and entry widgets weren't properly ignoring Alt-, Control-, and Meta- keystrokes, so a widget-specific binding for one of these resulted in the character also being inserted. 2/24/95 (bug fix) Several widgets accidentally performed unsigned division on negative numbers, thereby losing the sign bit. This mostly affected the display of images and bitmaps in buttons, menubuttons, and messages. 2/24/95 (feature reversal) Restored old behavior of %A so that it returns non-printing characters as well as printing ones now. *** POTENTIAL INCOMPATIBILITY with Tk 4.0b2, but not with Tk 3.6 *** 2/24/95 (bug fix) Duplicate "leave" events could occur for canvas items under some conditions, due to recursive calls to PickCurrentItem. Added code to detect and skip the nested calls. 2/24/95 (bug fix) Fixed bug where an error could occur during the first keystroke in an application if its binding invoked "break". 2/25/95 (new feature) Modified syntax of "search" widget command for texts. The -nowrap switch and the "variable" final argument are no longer supported. Instead, there is a -count switch to replace the final argument; if the final argument is specified, it is now a stopping index for the search. The features of -nowrap can be achieved now with the stopping index. *** POTENTIAL INCOMPATIBILITY with Tk 4.0b2, but not with Tk 3.6 *** 2/27/95 (bug fix) Fixed problem that appears to prevent keyboard input for working under IRIX: tkBind.c was ignoring XmbLookupString calls that returned a status of XLookupBoth. 2/27/95 (new feature) Added Tk_GetItemTypes procedure to return information about available canvas item types. 2/27/95 (feature change) Changed Makefile to always use install-sh for installations: there's just too much variation among "install" system programs, which makes installation flakey. 2/27/95 (bug fix) Fixed bug in tkSend.c that caused core dumps if the app's main window was destroyed by a destroy handler on a child. 3/5/95 (feature change) Change separator character used in "bind +..." bindings from semi-colon to newline (permits bindings that are comments, for what that's worth). 3/7/95 (bug fix/feature change) Overhauled focus code, both in C and in Tcl: - Tk won't move the X focus in response to the "focus" command unless either the application already has the focus or the -force switch is specified. - Tk no longer sets the X focus to anything other than top-levels; it synthesizes events for FocusIn and FocusOut to children. - A window no longer has to be viewable when focussed to; Tk will set the X focus later, when the window becomes viewable. - Added -takefocus option to all widgets. - Rewrote tk_focusPrev and tk_focusNext to use the -takefocus option. These procedures no longer set the focus; they just return the next window in focus order. *** POTENTIAL INCOMPATIBILITY with Tk 4.0b2, but not with Tk 3.6 *** - Eliminated tk_focusContinue. *** POTENTIAL INCOMPATIBILITY with Tk 4.0b2, but not with Tk 3.6 *** 3/8/95 (new feature, bug fix) Added support for tk_strictMotif variable in C: Tk_StrictMotif library procedure. Modified buttons, menubuttons, menus to use it. This fixes the problem with menus not supporting tk_strictMotif properly in Tk4.0b1 and b2. 3/16/95 (feature overhaul) Overhauled color management: - Changed Tk so it never denies a color request because a colormap filled up. Instead, it allocates the closest available color. - Eliminated "color model" mechanism. The "tk colormodel" command is gone, as are the procedures Tk_GetColorModel and Tk_SetColorModel. *** POTENTIAL INCOMPATIBILITY *** - Changed 3D border implementation to allocate colors for shadows lazily, so they're never allocated if they're never used. Also added new feature whereby stippling is used for borders when the colormap has run out of entries. Changed arguments to many of Tk_3D C procedures to take a Tk_Window as argument instead of a (Display *). This is needed to do lazy color allocation. *** POTENTIAL INCOMPATIBILITY *** - Eliminated colormap argument to Tk_GetColor, Tk_GetColorByValue, and Tk_Get3DBorder. *** POTENTIAL INCOMPATIBILITY *** 3/16/95 (feature change) Event bindings created from Tcl will now ignore Enter, Leave, FocusIn, and FocusOut events with detail NotifyInferior. This is done in anticipation of mega-widgets, so that the user of a mega-widget can create Enter/Leave bindings on the mega-widget without seeing spurious events as the mouse moves among the windows in the mega-widget. *** POTENTIAL INCOMPATIBILITY *** 3/17/95 (feature change) Changed C interfaces throughout Tk to use ints instead of unsigneds: the unsigneds turn out to cause subtle problems with arithmetic in some places, and using ints everywhere is just simpler. *** POTENTIAL INCOMPATIBILITY *** 3/23/95 (bug fix) Selections longer than 4000 bytes were being truncated to 4000 bytes. -------------------- Release 4.0b3, 3/24/95 ------------------------- 3/25/95 (bug fix) Changed "install" to "./install" in Makefile so that "make install" will work even when "." isn't in the search path. 3/25/95 (bug fix) Modified Tk's selection mechanism to prevent core dumps in other applications during retrievals of large selections (this is actually a bug in the other apps, but I've patched Tk to keep it from getting triggered). 3/25/95 (bug fix) Fixed bug where X window for "." wasn't being deleted. 3/27/95 (bug fix) Fixed many bugs associated with having more than one application in a single process. 3/28/95 (bug fix) The "search" widget command for texts didn't return the correct index and count if there were embedded widgets on the same line as the returned range but before the end of the range. 3/28/95 (bug fix) Changed pasting via button 2 in text and entries so that it inserts at the pointer location, not the location of the insertion cursor. 3/28/95 (bug fix) Fixed several bugs related to <Destroy> bindings that delete ancestors in the window hierarchy. Also eliminated extraneous calls to XDestroyWindow, which speeds up window deletion by about 3x. 3/28/95 (bug fix) Several widgets (buttons, menubuttons, menus) didn't properly handle image deletions that occurred while the widget was being deleted (caused core dumps). 3/29/95 (bug fix) When retrieving long selections from text widgets, parts of lines were getting duplicated in the selection information. 4/1/95 (bug fix) Fixed bug that caused infinite loop in horizontal scales with 0 range. 4/1/95 (bug fix) Fixed problem with -command option for scrollbars and -takefocus option that caused commands to be evaluated in the wrong context. 4/1/95 (bug fix) Fixed problem with option database that caused it to sometimes use the wrong option (wasn't flushing the database properly after a change in a window's class). 4/1/95 (bug fix) If a line in a text widget just barely fit in the window, Tk was allocating a second screen line just for the newline character. 4/1/95 (new feature) When backspacing in an entry widget, when you reach the left edge of the widget, the insertion cursor gets recentered. 4/1/95 (new features) Added "winfo pointerx" and "winfo pointery" commands to fetch the current pointer position. 4/6/95 (bug fix) If the last line of a text widget was only partially visible, it was counted as visible for purposes of the scrollbar. Now it is treated as if it were off-screen for scrolling purposes. 4/6/95 (new feature) Modified "bell" command to reset screen saver as well. 4/6/95 (feature change) Modified menu scanning (where menus pull down as you drag across their menubuttons) so it only works among menus in the same toplevel; it used to work for any menubuttons in the application. 4/6/95 (bug fix) Canvas text items weren't allowing real numbers in "@x,y" notation for specifying indices. 4/7/95 (bug fix) Menus didn't display correctly when -activeborderwidth was large. 4/7/95 (bug fix) Changed "clipboard append" command to support -- option and to always treat the last argument as data, even if it starts with "-". 4/17/95 (new feature) Added -wrap option to text tags. 4/18/95 (bug fix) Listboxes and texts weren't updating their grid information when -width or -height changed. 4/18/95 (bug fix) "Down" didn't work right in text widgets if the last line was only partially visible in the window. 4/19/95 (bug fix) Listboxes didn't handle partially visible last lines right: couldn't scroll it into full visibility, for example. 4/20/95 (bug fix) If a toplevel was positioned with a command like "wm geometry . -0-0", the window didn't reposition itself to maintain that geometry after a size change. 4/21/95 (feature change) Changed order of binding tags so widget bindings fire before class bindings. New order is: widget, class, toplevel, all. *** POTENTIAL INCOMPATIBILITY with Tk 4.0b3, but not with Tk 3.6 *** 4/23/95 (new feature) Added "winfo colormapfull" command. 4/23/95 (new feature) Buttons and radiobuttons and checkbuttons now treat Return the same as Space, unless tk_strictMotif is set. 4/23/95 (bug fix) Modified menu tear-off procedure to duplicate the binding tags and bindings of the original in the copy. 4/25/95 (bug fix and feature change) Modified mechanism for choosing "best" visual to fix a bug where depth wasn't really getting highest priority in all situations. 4/28/95 (bug fix) Failed text searches starting at "end" could result in an infinite loop in Tk. 4/30/95 (new feature) Added "wm resizable" command to enable and disable interactive resizing. 4/30/95 (new feature) Added "window names" widget command to texts: returns a list of all embedded windows. 5/2/95 (feature change) Changed text searches so that forward searches start at the given index, rather than the character just after the given index. *** POTENTIAL INCOMPATIBILITY with Tk 4.0b3, but not with Tk 3.6 *** 5/4/95 (bug fix) Default bit gravity for windows was wrong (it was ForgetGravity) causing unnecessary flashing when windows were resized. 5/4/95 (feature change) Modified Tk_DoOneEvent so that it doesn't sleep if there's nothing that will wake it up again (e.g. no file or timer handlers). Returns 0 immediately. 5/5/95 (configuration change) Changed to use BSDgettimeofday instead of gettimeofday on systems like IRIX where BSDgettimeofday is available. This avoids compilation problems due to the different interface to gettimeofday provided by IRIX. 5/5/95 (feature change) Changed binding mechanism so that all bindings are created immediately at initialization time, rather than waiting until the first FocusIn or Enter event for a class. 5/6/95 (feature change) Changed default text for labels, buttons, checkbuttons, radiobuttons, menubuttons, and messages from " " to "". 5/6/95 (bug fix) If the application was destroyed in the middle of an "update" command, Tk would dump core. 5/6/95 (bug fix) Changed manual entries to use the standard .TH macro instead of a custom .HS macro; the .HS macro confuses index generators like makewhatis. 5/6/95 (bug fix) Change "wm iconwindow" command to disable button presses for the icon window. This is needed so that the window manager can get those events (X only allows button presses to go to one client for a given window). 5/9/95 (new feature) When specifying visuals, can now use "best" with a depth, e.g. "-visual {best 8}" to get the best 8-bit visual. 5/18/95 (bug fix) Fixed bug with -spacing* options for text widget: screen distances weren't allowed, only integers. 5/20/95 (bug fix) Eliminated memory leaks in tkTextDisp.c and elsewhere. 5/22/95 (color change) Changed the Tk color palette to a gray scheme. Also added a library procedure tk_setPalette that makes it easy to change colors on the fly, and a procedure tk_bisque that restores the previous light brown scheme. 5/28/95 (bug fix) Modified canvases so that the -width and -height options refer to the space inside the borders, not the total widget space. Also changed "xview" and "yview" commands and scroll-increment rounding to use the pixel just inside the borders, rather than (0,0). 5/28/95 (bug fix) Several widgets (e.g. entries, buttons, and menus) didn't properly handle unsets of variables they were tracing, if the variables were reference through upvars in procedures. 6/4/95 (bug fix) The placer wasn't rounding window widths right when both -relx and -relwidth were specified (or -rely and -relheight) so that rounding errors accumulated. 6/4/95 (feature improvement) Change parsing of text indices to handle weird mark and tag names better (e.g. any string ending with ".first" will now be parsed as a tag name, even if it contains embedded spaces, etc.). 6/4/95 (feature change) If a font defines glyphs for control characters, they are now displayed, instead of translating the character to a backslash sequence (however, tabs and newlines are still treated specially; glyphs are not displayed for these characters). 6/4/95 (bug fix) Modify the implementation of "raise" and "lower" for toplevels so that it now works under olwm and olvwm. It didn't use to work, and the problem is really in the window manager, but Tk now patches around it. However, only "total" raises and lowers work: raising and lowering relative to a sibling still don't work under olvwm and olwm. 6/4/95 (feature change) Modified tab code in texts so that a tab always occupies at least as much space as a space character. 6/4/95 (bug fix) The "%t" substitution wasn't being made properly in Enter and Leave event bindings. 6/7/95 (new feature) Added support for GIF images. Unfortunately it's a bit fragile: certain kinds of badly formed images can cause core dumps; I don't know enough about the GIF reader (taken from giftoppm) to figure this out. 6/7/95 (bug fix and feature change) Fixed PPM image reader to be more flexible about header formats, and added support for PGM images. 6/7/95 (feature change) Added -outlinestipple option to canvas arc items, changed "-style arc" to use -outline as the color instead of -fill (the old approach was pretty quirky). *** POTENTIAL INCOMPATIBILITY *** 6/8/95 (feature change) Modified interface to Tk_Main to pass in the address of the application-specific initialization procedure. Tcl_AppInit is no longer hardwired into Tk_Main. This is needed in order to make Tcl a shared library. 6/8/95 (feature change) Modified Makefile so that the installed versions of wish and libtk.a have version number in them (e.g. wish4.0 and libtk4.0.a) and the library directory name also has an embedded version number (e.g., /usr/local/lib/tk4.0). This should make it easier for Tk 4.0 to coexist with earlier versions. 6/9/95 (new feature) Added -outline and -width options to canvas polygon items. 6/9/95 (feature changed) Renamed -decimate in photo widget to -subsample (decimate wasn't technically correct). *** POTENTIAL INCOMPATIBILITY with Tk 4.0b3, but not with Tk 3.6 *** -------------------- Release 4.0b4, 6/16/95 ------------------------- 6/19/95 (bug fix) Colors weren't being rounded correctly in canvas Postscript generation: caused "white" to appear slightly gray when the display of the canvas used only 8 bits per color. 6/20/95 (bug fix) "bbox" widget command for texts didn't return proper width for tabs. 6/20/95 (bug fix) Scrollbars didn't always work right for texts: couldn't scroll all the way to the bottom of the text in a single drag of the slider. 6/20/95 (new feature) Added "delta" widget command for scrollbars (needed for above bug fix). 6/23/95 (bug fix) Listboxes weren't properly redisplaying their borders when the were configured to a smaller size. 6/23/95 (new feature) Added "winfo server" command. 6/23/95 (bug fix) If a menu was posted, couldn't switch to another menu with an Alt- key. 6/24/95 (new feature) Added "winfo pointerxy" command. 6/25/95 (bug fix) Tk_ParseArgv referenced beyond the end of 0-length option names. 6/25/95 (bug fix) Fixed problem in tkOption.c where "cachedWindow" could get garbage in it if the main window's class was changed by calling Tk_SetClass. 6/25/95 (bug fix) Fixed two bugs in menus, one where errors in variable traces weren't propagated correctly and one where "invoke" was invoked at the wrong stack level, with the result that variable traces didn't have access to the right variables. 6/27/95 (bug fix) tk3d.c wasn't using all the right information when deciding whether or not to stipple borders, so it stippled borders even on 16-bit true-color displays. 6/28/95 (bug fix) Page up and down operations in texts could cause insertion cursor to drift to the right. Changed tkTextScrollPages to use upper-left corner of current character, rather than center of character. 6/28/95 (bug fix) Changed text widget so that you can't put the insertion cursor after the last newline in the text. 6/28/95 (bug fix) Bitmap images didn't allow ~'s in file names. 6/28/95 (bug fix) Fixed problem that could cause core dumps in the text widget when dealing with embedded windows (there were problems if the act of redisplaying caused the window layout to change, which can happen with embedded windows). 6/28/95 (bug fix) Texts didn't handle indices with double negatives, such as ".t mark set insert {insert + -20 chars}". 6/28/95 (bug fix) Fixed problem where focus didn't always revert to its prior window after a dialog box was dismissed. 6/28/95 (bug fix) Fixed problem with "search" widget command returning incorrect length on some backwards regexp searches. 6/28/95 (bug fix) Successive "wm iconbitmap . {}" commands could cause a core dump. 6/29/95 (new feature) Added -elementborderwidth option for scrollbars so the -borderwidth can be set to 0 without flattening the arrows and slider. -------------------- Release 4.0, 7/1/95 -------------------------