RISC DISC 1/RISC_DISC_1.iso/pd_share/code/desklib/Docs/Updates

Text File | 1994-05-29 | 28.0 KB | 688 lines

Updates between DeskLib versions:

2.10 (June 1994) -------------------------------------------------------------
MOVED
  I've moved !TestApp into the new Examples directory


AMENDED
  My contact addresses mysteriously changed, coincidentally at the same time
  as I moved to England and started working at Computer Concepts.
  See the end of 'AboutDL' for my new addresses.

  Doc.Blanks.Makefile
    Updated this for the new make system (I missed it the last time around)

  Core
    BOOL is now an unsigned rather than signed int, to allow 1-bit BOOL
    bitfields.

  Coord
    Changed to new help-comment format comments

  Dialog
    A couple of bugfixes to the dialogue code

  Event
    Fixed bug in NULL event handling (NULL events were not included in
    event_ANY claims, but were in included in event_ANY releases, so were
    often disabled when they should not have been).
    event_ANY now definitely does NOT include NULL events, 'cos they're special

    **** IMPORTANT ****
    Claims of events for any window (with event_ANY) are now added to the
    HEAD of the event list rather than the TAIL. This means that you can add
    a temporary event OVERRIDE to a window - the old system meant that you
    could only intercept events that were not otherwise already processed
    by the window.

  File
    Fixed File_Delete (to save registers v1, v2 over the SWI call)

  Icon
    Icon_GetText has been slightly modified so it won't blow up if you have
    an indirected icon which does not contain text or a sprite. It now also
    terminates the string at the first control character discovered, rather
    than expecting the string to be zero terminated

    Icon_SetText, Icon_printf, Icon_SetTextRJ, Icon_SetInteger, Icon_SetDouble
    now all ensure that when setting the text in an icon containing the caret,
    the caret is not left in the wrong place

  Handler
    Minor change (all functions now include handler.h)

  Misc
    All strong handling functions have moved to the new 'Str' sublibrary

  Mem
    Mem_MidExtend now returns TRUE if you ask it to extend by 0 bytes, so
    you shouldn't have to special-case this case any more.

    Several serious bugs ironed out of Mem_Compact

  Menu
    Small changes to NewMenu.c to calculate MenuWidths better, and not
    indirect menu items if they are exactly 12 characters long.

  StringCR.h
    All definitions from this file are now in the new 'Str.h' header.
    StringCR.h remains for backwards compatability.

  Template
    Fixed rampant bug in template ClearAll and Delete (trying to free memory
    that wasn't malloc'd!)
    ClearAll also now releases any fonts that were in use by the discarded
    templates.
    Template loading now truly appends templates to the current list rather
    than destroying the old list.

  Window
    Window.h now includes a prototype for Window_BringToFront
    Added open_CENTEREDUNDERPOINTER open mode for Window_Show
    Window_Delete now also releases all EventMsg claims
    Window_Create now returns 0 if it fails

ADDED
  Added Erik de Kort's small OpenDirH program to !DeskLib, so now double-
  clicking !DeskLib opens the headers without obscuring the icon bar.
  (RISC OS 3 only. If you haven't got RO3, upgrade)

  Added Docs.HelpCommnt and Blanks.HelpCommnt.*
  This describes how to generate machine-readable comments in your sources
  that can be compiled with Tim Browse's up-coming help compiler. The help
  will then become an on-line hyperlinked database (StrongHelp or WordWorks
  HyperView) rather than scrappy bits of text spread over hundreds of
  header files.

  ColourTrans
    Added veneer for ColourNumberForMode SWI

  Coord
    Added RectUnion

  Core.h
    Added UNUSED_ARG, MIN, MAX, and OSCLI macros

  Dialog
    Addition of Hide and ShowAt functions

  Drag sublibrary
    This simplifies dragging by providing a central handler system, into which
    you can plug handlers specific to each drag when the drag is started.
    These handlers are automatically discarded when the drag completes.
    This addition includes the Event handlers DragNULL & DragFinish, and
    the stuff in the Drag sublibrary (Drag_Initialise, Drag_SetHandlers)
    See Drag.h for details.

  File
    Added File_Date and File_SetType

  GFX
    Added GFX_GCOL macro

  Handler_HatchRedraw.
    This redraws a hatch pattern across a window. Useful when developing a
    program but haven't written a redraw handler, so you can see that
    something is happening.

  Hourglass
    The hourglass swi veneer macros (in hourglass.h) have now been replaced
    by proper SWI veneer functions.

  Icon
    Icon.SetCol, two small functions to set the foreground and background
    colours of a (non-outline-font) icon.

    Icon_SetTextRJ; similar to SetText, but right-justifies the text in the
    icon string buffer (i.e. if the string is too long, it is truncated at
    the beginning rather than at the end)

    Addition of the following code files by Tim Browse:
      BarIconUse
      FileIcon
      GetBgCol
      GetFgCol
      GetTextPtr
      ScreenPos
      SelectGroup
      ShadeGroup

  Kbd
    Added GetModifiers function, which reads the up/down state of modifier
    keys (Alt, Ctrl, Shift)

  KernelSWIs
    Added this sublibrary, which provides veneers for OS_Byte and OS_Word

  Mem
    Added Mem.CheckHeap, a function for debugging which checks the
    integrity of the heap.

  Menu
    Menu.GetText: A function that returns a pointer to a menu item text buffer

    Menu.GetFlags: A function to read a menu item's flags

    Menu.Warn: A function that registers a message_MENUWARN handler with
    EventMsg, and sets a menu item's flags to make it produce such a message.

    Menu.RemItem: A function to remove an item from an existing menu structure

  Module
    A new sublibrary supporting the OS_Module SWI.
    Currently provides OS_Module Claim and Free functions

  PDriver
    PDriver.h now has a more constants defined, tidier comments, & RO3 support

  Save
    A save-as window handler sublibrary

  Serial
    Veneers and handlers for accessing the serial port - see Serial.h

  Sprite
    A whole heap of new veneers, plus Sprite_LoadFile

  Str
    New String sublibrary. This includes all the 'StringCR' stuff, plus
    some new ANSI-like string handlers, plue LeafName (returns the leaf
    name from a full RISC OS pathname string) and other functions such
    as decoding hexadecimal strings, etc. See Str.h for details.

  Template
    Added Template_UseSprites function; Call this before using templates
    to make them use sprites from a user sprite area instead of the
    WIMP sprite pool

  Time
    Added SWI veneers for time conversions ConvertDateAndTime and
    ConvertStandardDateAndTime.

  WAssert
    A new sublibrary providing a WIMP (Wimp_ReportError) based assertion
    system (Used while developing a program to check if certain conditions
    that should be met in your code actually ARE being met in your code).
    See WAssert.h for details of its use.

  Wimp
    Added mouse button value constants (button_SELECT etc) to Wimp.h



2.05 (inadvertently released ?) ----------------------------------------------

ADDED
  Kbd
    Kbd_GET, an OS_ReadC veneer, similar to BASIC's GET command - returns the
    ASCII code of the next keypress in the keyboard buffer (or waits for
    the user to press a key if the buffer is empty)

AMENDED
  DragASprite
    DragASprite_DragIcon now works properly under RISC OS 2 as well as 3.
    It turned out the parent bounding box maximum was being set to &FFFFFFFF
    (-1) instead of &7fffffff (the maximum possible positive integer).
    Under RO3 this didn't matter, but RO2 then put the drag box offscreen
    (i.e. it worked fine except the dragbox was 'invisble'!

  PDriver.h
    The prototype for EnumerateJobs was missing its argument!

  Window
    Window.c.ParentName fixed (was copying only 8 characters of the name
    instead of 12 (wimp_MAXNAME)).


2.04 (July 1993) -------------------------------------------------------------

Updated the !DeskLib !Run file - now uses Filer_CloseDir on the header dir.
before trying to open it, so that it is now never lost off-screen.

Added Wimp_ReportErrorR, which returns the flags to you indicating which
button (OK/Cancel) on the Wimp_ReportError dialogue was clicked by the user.
(source in WimpSWIs.s.Wimp40R). See WimpSWIs.h

Added Wimp_Poll3 and Wimp_PollIdle3.


2.03 (July 1993) -------------------------------------------------------------

Important - Please note that Event_ and Wimp.h now support more RISC OS 3
functionality. Specifically, Wimp_Initialise has a new parameter (message
list) on the end - to re-link with this version of the library, you will need
to upgrade any Wimp_Initialise calls in your code (add a NULL onto the end of
the list of parameters to Wimp_Initialise). You can of course take this
opportunity to upgrade your code to use the new features the RISC OS 3
makes available. Note that you'll also need to use LibFile to re-make the
WimpLib if you use it separately.

Along similar lines, you can now call Event_Initialise3() in place of
Event_Initialise to do a proper RISC OS 3 Wimp_Initialise, passing in a
list of accepted messages, etc. Event_Initialise provides the same (RISC OS 2)
functionality as before.


MISCELLANEOUS modifications
  Modified the Libraries.!MakeDLib obey file. Each sublibrary is now compiled
  by invoking an alias 'DLibMake', which makes the file shorter and more
  readable, and also allows you to more easily modify the way in which
  sublibraries are compiled.

  Modified the Clean obey files - they now won't abort if a file is missing.

  Modified the Makefiles to make everything tidier.
  Now, in the obey file Libraries.!MakeDLib, you can set 3 amu variables:
    x_cflags - c compiler extra flags
    x_aflags - objasm extra flags
    do       - What to do to create the sublibrary

  This allows you to do some important things:
    x_cflags=-Ff
      This is the new default, which reduces the library code size by about 5%.
      However, when debugging, you may like to recompile the library with the
      'f' removed, so that you can find the names of the functions being
      called as you debug.

    do="Create $@ 1"
      This will minimise disc space used by the library (by creating 1-byte
      'sublibraries' instead of compiling them properly - the file is needed
      so amu knows the sublibrary is up to date)

    do="LibFile -c -o $@ @.o.*"
      This will create each sublibrary - you can then use the sublibrary files
      to link with instead of the main DeskLib library (eg WimpLib is quite
      handy on its own, and is only 18kB rather than DeskLib's >100kB, a very
      useful thing if you're developing of floppies!)


  Updated the TestApp- now does the following extra things:
    * Uses outline fonts, and gets them right if you change screen modes
    * Changes the window title if you click the menu item 'Change title'
      when you brought the menu up from a window (else that item is shaded)


BUGS which have been fixed:
  Font
    Fixed a major set of bugs due to a small and harmless-looking typo in the
    Font sublibrary - most of the font calls would return a non-zero value
    if no error occurred, and a zero value if an error occurred (i.e. the
    opposite of what they should have been doing: MOVVS r0, #0 instead of
    MOVVC r0, #0)
    This affects most font calls, but you'll only notice a difference if you
    check the returned error - the SWIs worked fine, but returned incorrect
    error-return-values - all other return values were unaffected.

  ColourTrans, DragASprite
    Similar problems were also removed from the assembler veneers for the
    ColourTrans, DragASprite, and PopUp sublibraries - namely that the return
    values were not consistent with the definitions given in the headers.
    I'll keep a closer eye on this in future!

  Icon
    Icon_BarIcon, Icon_GetText, Icon_Set(Integer/Double/Text), Icon_printf
    previously did not correctly terminate strings correctly if they were too
    long to fit in the icon.
    Icon_BarIcon now uses sprite_MAXNAME rather than wimp_MAXNAME for copying
    the sprite name (though these constants are both 12, so there is no
    effective difference)

  Menu
    No longer trashes your machine with indirected menu items (Menu_New)

  PopUps
    'bugs' removed from the PopUp.h header file's example code segments
    SWI veneers fixed up - they didn't quite correspond to the prototypes
    given in the headers.

  Template_Clone
    Now terminates copied strings properly.


MODIFICATIONS
  Error
    Upgraded OtherSrc.c.Error and Error.h to new code submitted by P.Colmer.
    Now Error_Report and Error_ReportFatal (and "Internal" versions of these)
    take variable arguments - they can still be used exactly as before, but
    you can now include any 'printf' style arguments to save having to
    pre-assemble a string to pass in.

  Event
    Upgraded Event_Initialise to call the new function Event_Initialise3
    with a required WIMP version of 200 (RISC OS 2 WIMP), to add support
    for RISC OS 3, and the new non-zero-pollword events.

  Resource
    This has now been moved from Misc to its own (Resource) sublibrary.
    Also added replacement call for Resource_Initialise,
    Resource_InitialisePath, which allows you to use DeskLib functions
    to load Templates, messages, etc. from a path ("AppName:Templates")
    rather than a directory ("<AppName$Dir>.Templates") - useful for adding
    support for internationalisation.

  Template
    Added support into Template_Clone for a new 'maxtitlesize' value of
    template_TITLEMIN (-1) which will allocate as much room for the title
    as declared in the template definition.

    Added support for outline fonts into Template loading.
    (See the end of Template.h for details of the new calls)

  Template, Handler, Window
    Added code to fix any windows/templates you are using which contain icons
    using outline fonts whenever a mode change necessitates it (On some mode
    changes outline fonts will otherwise become the wrong size as the font
    manager doesn't re-cache them).

    This functionality required addition of:
    Font.c.LoseAll         Lose all fonts in a Template_Load style font
                           usage array
    Handler.c.ModeChange   Replacement for old ModeChange handler - does the
                           same as before, but if you are using outline fonts
                           (you have called Template_UseOutlineFonts()) it
                           fixes all your fonts if necessary. Note that this
                           only works on templates loaded with Template_ calls
                           and windows opened with Window_ calls.
    Template.c.UseOutFont  Function to call BEFORE Template_LoadFile to set up
                           a font usage array and exit-handler to lose any fonts
                           you were using.
    Window.c.ModeChange    Function to call to fix outline fonts in all windows
                           and templates. Called by Handler_ModeChange()

    Appropriate changes have been made to the relevant header files.

  Wimp SWI veneers
    WimpSWIs.s.Wimp01 (Wimp_Initialise) has now been modified to support
    the new RISC OS 3 parameter (the message list). This call is still
    RISC OS 2 compatible, but those of you calling Wimp_Initialise directly
    will need to add a NULL onto the end of your initialise call, e.g.
      Wimp_Initialise(&version, "MyTask", &taskhandle);
    will become:
      Wimp_Initialise(&version, "MyTask", &taskhandle, NULL);

  Window
    As well as the additions mentioned in the bit above,
    changes have also been made to the internal window information structure
    as used by the Window.c files. (The window template name is now
    WIMP_MAXNAME+1 characters long (13) rather than 9 characters long)



ADDITIONS
  Event
    Added Event_Initialise3() to Event.c.Event. This more or less replaces
    Event_Initialise with a new call that will initialise the RISC OS 3 WIMP
    and allow you to pass in the list of desired messages. You should not use
    Event_Initialise with WIMP version numbers greater than 200 - use
    Initialise3 instead. [If you desire RISC OS 2 compatability, you MUST
    call Event_Initialise]
    This also allows the support for non-zero pollword events now available
    under RISC OS 3. Thanks to P.Colmer.

  File
    Added File sublibrary, which gives calls for opening, closing, reading and
    writing (bytes, words, words with endian-conversion, chunks),
    getting/setting the file position, and misc operations (reading file size,
    deleting a file, checking if a file exists). These are all veneers for
    OS_File/GBPB/BGet SWIs, and may be preferable to stdio functions in some
    circumstances, as they are faster than stdio calls, and also are easier
    to use in conjunction with other systems that work with RISC OS file
    handles (rather than C's (FILE *))

    Added some test code for File_ calls to TestApp. This test code can be
    found in "!TestApp.Test c" - you can add it back into the test app if you
    feel keen to try it out! It also might be of use as an example of use of
    the file calls, though they're pretty simple!

  GFX
    Added GFX_VDU (and alias VDU), an OS_WriteC veneer

  Mem
    Added Mem_MoveAnchor, which allows you to move the anchor for a memory
    chunk into another variable. Very convenient in some circumstances
    (i.e. I had an anchor in an array, and wanted to allocate a new chunk,
     and some time later replace the old chunk with it in the array - this is
     now possible by simply moving the anchors for the two blocks into new
     storage locations as appropriate)

  PopUps
    Added Docs.ModuleNote.PopUps which gives a bit more help and example code
    on using PopUp windows from DeskLib C code.

  Sprite
    Added 3 new Sprite functions - a veneer for SpriteOp 62 (read save area
    size) and functions to return the size (in bytes) of a sprite, given its
    vital parameters, and the size of a sprite needed to fill a window's icon.
    Thanks to Tom Kirby-Green for this submission.

  Wimp.h
    Wimp.h has been upgraded: icon_flags now include a third struct in
    the union which allows you to directly access the font handle with
    icon.font.handle instead of having to mask it out of icon.value

    Wimp.h now has extra support for RISC OS 3, relating mainly to wimp
    pollwords and non-zero pollword events. Some new event mask bit
    definitions have been added.

  Window
    Added Window.c.SetTitle, which allows you to set the text of a window title
    and update the correct bit of the screen, even when using odd sized
    toolsprites, etc. (And better than win_settitle because it doesn't crash if
    the icon is non-indirected, it bothers to terminate the string if it had
    to truncate it to make it fit, and it doesn't try to force redraw part of
    the screen if the window isn't actually OPEN!)

    Also added Window_ModeChange, as described above (Modifications to
    Template)


2.01 (May 1993) --------------------------------------------------------------
Apologies to all DeskLib users out there for the long (1 year) delay between
releases, and for all the bugs and missing bits in the library. This delay
was caused by my thesis and other things taking too much of my time. I hope
that I will be able to continue DeskLib updates at a more reasonable pace
in the future... I have jumped from version 1.04 to version 2.00 to reflect
the reasonably large update, to stress the newness of this version, and
to make you feel as if something must have been done between this and the
last release! ;-)

Note that although DeskLib is now supporting RISC OS 3 functions, it is still
RISC OS 2 compatible. Also, some things (such as Wimp_Initialise under RISC
OS 3) have not yet been implemented, mainly due to a total lack of any
documentation on the subject. This will hopefully change for the better in
the not too distant future...)

Apologies to anyone who needs to adjust their code because of changes to the
library headers. These changes were deemed necessary for one or more of the
following reasons in each case:
  * To make it work!
  * To remove unnecessary incompatabilities with compilers other than Desktop C
  * (as a side effect) To improve consistency/readability

You can, of course, stick with the old definitions in the headers if you
prefer them. Most people I know have their own random perturbations of the
original header files anyway!


  Additions
    Added sublibraries:
      ColTrans       Assembler interfaces to 4 ColourTrans SWIs

      DragASpr       3 Routines for using DragASprite
                     I especially direct your attention to
                     DragASprite_DragIcon() which is excellent!
                     (c.f. macro "Icon_StartSolidDrag" defined in icon.h)

      Filter         Assembler interfaces to RISC OS 3 FilterManager SWIs

      Font           Assembler interfaces to 23 Font SWIs

      Kbd            Assembler function to check if a key (e.g  SHIFT, CTRL)
                     is currently depressed. (No function yet to cheer it
                     up if it is, though ;-)

      Menu           Simple menu creation and manipulation functions along
                     similar lines to those in RISC OS lib. (A proper menu
                     template system is planned in conjunction with Glazier
                     for the future, but I needed to fill this gap NOW!)

      Mem            'flex'-like dynamic memory manager for multitasking
                     applications. However, 'better' than flex, as it
                     compacts its heap much more efficiently than the
                     equivalent operation from flex (you call the Mem_Compact
                     function just before Wimp_Poll). It also guarantees
                     that blocks will not move around to a much higher degree
                     than flex does, giving you more freedom.

      Sound          Routine to sound a system beep (VDU 7!)

    Added functions to:
      GFX            Added GFX_Write0() and GFX_WriteN()

      Icon           Added Icon_SetSelect(), Icon_SetShade(), and
                     Icon_DisposeIndData()

      Misc           Added Dispatch(), a generic function dispatcher, and
                     new stringcr functions (strcmpcr, strcatcr, strcpycr)

      Sprite         Added 6 new SWI veneers

    Added more definitions to:
      KeyCodes.h

  Subtractions
    The REDRAW (3-d icon border redraw) code has been discontinued because:
      a) RISC OS 3.10 includes this feature for you, and
      b) DeskLib actively supports RISC OS 3.10 onwards and no longer has
         any sympathy for people without it! (though all non-RISC-OS-3
         specific portions of it still work fine with RO2, this cannot be
         guaranteed for the future)
     For this reason, Icon_Select3d, Icon_Deselect3d, and Handler_Redraw3d
     have also been removed.
     If you have code which uses any of the above, then either copy them
     forward from your old DeskLib or convert your program to use RISC OS
     3.10 borders!


  BugFixes/Modifications
    Generally:
      Touched up the docs. PLEASE NOTE my change of email address!

      Rewrote all the makefiles. Now much smaller, tidier, and easier to both
      understand and maintain, as well as more informative during Makes.
      Redirected LibFile through a 'via' file (!Objects).
      (It's wonderful what you can find out by reading the manual ;-)

      Moved "Template.c.strlencr" to "Misc.c.strlencr" (see strlencr.h, below)

      Slightly improved some of the Docs and quickrefs.

    Coord:
      Fixed some stunningly obvious and totally wrong prototypes and
      #defines in Coord.h, particularly the Coord_YTo... macros.

    GFX:
      Most GFX commands have been converted to more efficient assembler
      versions. The header reflects slight changes (e.g. GFX calls now no
      longer return os_errors).
      Fixed a harmless bug in GFX_CLG.
      Made some GFX macros in GFX.h a bit nicer to read
      Fixed GFX_Circle and GFX_CircleFill (used to use x+r instead of r!)

    Handler.ClickOK.c:
      Now doesn't do anything if icon clicked with MENU.

    Icon:
      BarIcon.c fixed to take icon size from the sprite correctly
      Macro Icon_StartSolidDrag added as an alias for DragASprite_DragIcon
      SetDouble modified to correctly fill in the right number of decimal
      places.
      SetCaret will now refuse to place the caret into a shaded icon.

    LinkList.h:
      InitItem macros added - now use Init() to init an anchor and InitItem()
      to init an item, which will make it easier to replace the workings of
      the list manager seamlessly.
      Also modified these macros so that they will function corrrectly in the
      following code:
        if (whatever)
          LinkList_InitItem(blah);
      Redefined LinkList_{Next|Previous}Item() to make them nicer to use -
      instead of using LinkList_NextItem(&thing.header), you can now use
      LinkList_NextItem(&thing); (note that both syntaxes are fine now)
      The Makefile for ListLib now also includes ListLength.c

    Misc Resource.c:
      Now adds terminator to string after strncat to ensure that the string
      is terminated if you supply too long a name.

      **** Important
      strlencr has been moved into the Misc sublibrary.
      strlencr() has been modified to make it functionally equivalent to
      the ANSI function strlen() - that is, it now returns a value 1 LESS
      than it did under 1.04 (i.e. it doesn't include the terminator any more)
      All routines within DeskLib which use this function have been modified
      accordingly.

    Sprite:
      Sprite.h tidied up, and parameter types slightly modified. 'sprite' and
      'sprite_area' pointer typedefs fixed (previously used old names for the
      definitions, so were totally incorrect)

    strlencr.h
      This has been renamed to 'stringcr.h', and now includes more than one
      cr-terminated string handling function. (Correspondingly, a slight
      modification of Template.h.TemplDefs to #include this new header)

    Wimp.h:
      window_ICONBAR changed from -1 to -2
      message_destinee changed to a 'typedef int' instead of a union

      window_block structure used to use shorts for minwidth and minheight.
      This has been changed to minsize.x and minsize.y (both for consistency
      and compatability with the Risc Developments compiler)

      window_flags structure modified to use the normal DeskLib form for
      flag-words (flag.value plus flag.data.*)

      iconvalid_BORDERTYPE changed from 'B' to 'R' (RISC OS 3, 3.10 onwards)

      Added definitions for message_WINDOWINFO (used for iconisation)
      and message_MENUSDELETED (warning when a menu is closed)

      Added windowcol_XXXX defines to make accessing a window's colours
      easier (i.e. window->colour[windowcol_WORKBACK] = colour_RED)

      Added colour_TRANSPARENT (= 255)

      Added message_menuwarn structure definition

    WimpSWIS:
      Several function prototypes changed. Some were prototyped as accepting
      a union which contained either a data set or a 'value' int. Unfortunately
      the compiler baulks at this, so these have been changed to 'int's. This
      now means that you need to pass in 'whatever.value' to these functions.

      Added Wimp_CommandWindow prototype, which somehow got missed out
      last time!
      Wimp_DeleteWindow fixed (now actually deletes the window! Wow!)

    Window:
      GetInfo.c: '&block' changed to '&block[0]'
      Show.c:    Showing a window with open_NEARLAST now modified to open
                 the very first such window centered. Also, only windows
                 opened with NEARLAST will now affect the position of
                 succeeding NEARLAST windows.

    Template.Clone.c
      Modified to use the new form of strlencr()


1.04 31/05/92 ----------------------------------------------------------------
  BugFixes/Modifications:
    A minus changed to a plus in Coord_Convert routine (should now work!)
    Extra fields added to the menu_flagword struct
    Incorrect definitions of message_Data(Load/Save/SaveAck) fixed
      -replaced incorrect "wimp_box" with "wimp_point"