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- '\" $Header: /user6/ouster/wish/man/RCS/entry.n,v 1.13 93/04/01 09:52:37 ouster Exp $ SPRITE (Berkeley)
- '/"
- .\" The definitions below are for supplemental macros used in Tcl/Tk
- .\" manual entries.
- .\"
- .\" .HS name section [date [version]]
- .\" Replacement for .TH in other man pages. See below for valid
- .\" section names.
- .\"
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- '\" # Heading for Tcl/Tk man pages
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- ..
- .HS entry tk
- .BS
- '\" Note: do not modify the .SH NAME line immediately below!
- .SH NAME
- entry \- Create and manipulate entry widgets
- .SH SYNOPSIS
- \fBentry\fI \fIpathName \fR?\fIoptions\fR?
- .SH "STANDARD OPTIONS"
- .LP
- .nf
- .ta 4c 8c 12c
- .VS
- \fBbackground\fR \fBforeground\fR \fBinsertWidth\fR \fBselectForeground\fR
- \fBborderWidth\fR \fBinsertBackground\fR \fBrelief\fR \fBtextVariable\fR
- \fBcursor\fR \fBinsertBorderWidth\fR \fBscrollCommand\fR
- \fBexportSelection\fR \fBinsertOffTime\fR \fBselectBackground\fR
- \fBfont\fR \fBinsertOnTime\fR \fBselectBorderWidth\fR
- .VE
- .fi
- .LP
- See the ``options'' manual entry for details on the standard options.
- .SH "WIDGET-SPECIFIC OPTIONS"
- .ta 4c
- .LP
- .nf
- .VS
- Name: \fBstate\fR
- Class: \fBState\fR
- Command-Line Switch: \fB\-state\fR
- .fi
- .IP
- Specifies one of two states for the entry: \fBnormal\fR or \fBdisabled\fR.
- If the entry is disabled then the value may not be changed using widget
- commands and no insertion cursor will be displayed, even if the input focus is
- in the widget.
- .VE
- .LP
- .nf
- Name: \fBwidth\fR
- Class: \fBWidth\fR
- Command-Line Switch: \fB\-width\fR
- .fi
- .IP
- Specifies an integer value indicating the desired width of the entry window,
- in average-size characters of the widget's font.
- .BE
-
- .SH DESCRIPTION
- .PP
- The \fBentry\fR command creates a new window (given by the
- \fIpathName\fR argument) and makes it into an entry widget.
- Additional options, described above, may be specified on the
- command line or in the option database
- to configure aspects of the entry such as its colors, font,
- and relief. The \fBentry\fR command returns its
- \fIpathName\fR argument. At the time this command is invoked,
- there must not exist a window named \fIpathName\fR, but
- \fIpathName\fR's parent must exist.
- .PP
- An entry is a widget that displays a one-line text string and
- allows that string to be edited using widget commands described below, which
- are typically bound to keystrokes and mouse actions.
- When first created, an entry's string is empty.
- A portion of the entry may be selected as described below.
- .VS
- If an entry is exporting its selection (see the \fBexportSelection\fR
- option), then it will observe the standard X11 protocols for handling the
- .VE
- selection; entry selections are available as type \fBSTRING\fR.
- Entries also observe the standard Tk rules for dealing with the
- input focus. When an entry has the input focus it displays an
- \fIinsertion cursor\fR to indicate where new characters will be
- inserted.
- .PP
- Entries are capable of displaying strings that are too long to
- fit entirely within the widget's window. In this case, only a
- portion of the string will be displayed; commands described below
- may be used to change the view in the window. Entries use
- the standard \fBscrollCommand\fR mechanism for interacting with
- scrollbars (see the description of the \fBscrollCommand\fR option
- for details). They also support scanning, as described below.
-
- .SH "WIDGET COMMAND"
- .PP
- The \fBentry\fR command creates a new Tcl command whose
- name is \fIpathName\fR. This
- command may be used to invoke various
- operations on the widget. It has the following general form:
- .DS C
- \fIpathName option \fR?\fIarg arg ...\fR?
- .DE
- \fIOption\fR and the \fIarg\fRs
- determine the exact behavior of the command.
- .PP
- Many of the widget commands for entries take one or more indices as
- arguments. An index specifies a particular character in the entry's
- string, in any of the following ways:
- .TP 12
- \fInumber\fR
- Specifies the character as a numerical index, where 0 corresponds
- to the first character in the string.
- .TP 12
- \fBend\fR
- Indicates the character just after the last one in the entry's string.
- This is equivalent to specifying a numerical index equal to the length
- of the entry's string.
- .TP 12
- \fBinsert\fR
- .VS
- .VE
- Indicates the character adjacent to and immediately following the
- insertion cursor.
- .TP 12
- \fBsel.first\fR
- Indicates the first character in the selection. It is an error to
- use this form if the selection isn't in the entry window.
- .TP 12
- \fBsel.last\fR
- Indicates the last character in the selection. It is an error to
- use this form if the selection isn't in the entry window.
- .TP 12
- \fB@\fInumber\fR
- In this form, \fInumber\fR is treated as an x-coordinate in the
- entry's window; the character spanning that x-coordinate is used.
- For example, ``\fB@0\fR'' indicates the left-most character in the
- window.
- .LP
- Abbreviations may be used for any of the forms above, e.g. ``\fBe\fR''
- or ``\fBsel.f\fR''. In general, out-of-range indices are automatically
- rounded to the nearest legal value.
- .PP
- The following commands are possible for entry widgets:
- .TP
- \fIpathName \fBconfigure\fR ?\fIoption\fR? ?\fIvalue option value ...\fR?
- Query or modify the configuration options of the widget.
- If no \fIoption\fR is specified, returns a list describing all of
- the available options for \fIpathName\fR (see \fBTk_ConfigureInfo\fR for
- information on the format of this list). If \fIoption\fR is specified
- with no \fIvalue\fR, then the command returns a list describing the
- one named option (this list will be identical to the corresponding
- sublist of the value returned if no \fIoption\fR is specified). If
- one or more \fIoption\-value\fR pairs are specified, then the command
- modifies the given widget option(s) to have the given value(s); in
- this case the command returns an empty string.
- \fIOption\fR may have any of the values accepted by the \fBentry\fR
- command.
- .TP
- \fIpathName \fBdelete \fIfirst \fR?\fIlast\fR?
- Delete one or more elements of the entry. \fIFirst\fR and \fIlast\fR
- are indices of of the first and last characters in the range to
- be deleted. If \fIlast\fR isn't specified it defaults to
- \fIfirst\fR, i.e. a single character is deleted. This command
- returns an empty string.
- .TP
- \fIpathName \fBget\fR
- Returns the entry's string.
- .TP
- \fIpathName \fBicursor \fIindex\fR
- .VS
- Arrange for the insertion cursor to be displayed just before the character
- given by \fIindex\fR. Returns an empty string.
- .VE
- .TP
- \fIpathName \fBindex\fI index\fR
- Returns the numerical index corresponding to \fIindex\fR.
- .TP
- \fIpathName \fBinsert \fIindex string\fR
- Insert the characters of \fIstring\fR just before the character
- indicated by \fIindex\fR. Returns an empty string.
- .TP
- \fIpathName \fBscan\fR \fIoption args\fR
- This command is used to implement scanning on entries. It has
- two forms, depending on \fIoption\fR:
- .RS
- .TP
- \fIpathName \fBscan mark \fIx\fR
- Records \fIx\fR and the current view in the entry window; used in
- conjunction with later \fBscan dragto\fR commands. Typically this
- command is associated with a mouse button press in the widget. It
- returns an empty string.
- .TP
- \fIpathName \fBscan dragto \fIx\fR
- This command computes the difference between its \fIx\fR argument
- and the \fIx\fR argument to the last \fBscan mark\fR command for
- the widget. It then adjusts the view left or right by 10 times the
- difference in x-coordinates. This command is typically associated
- with mouse motion events in the widget, to produce the effect of
- dragging the entry at high speed through the window. The return
- value is an empty string.
- .RE
- .TP
- \fIpathName \fBselect \fIoption arg\fR
- This command is used to adjust the selection within an entry. It
- has several forms, depending on \fIoption\fR:
- .RS
- .TP
- \fIpathName \fBselect adjust \fIindex\fR
- Locate the end of the selection nearest to the character given by
- \fIindex\fR, and adjust that end of the selection to be at \fIindex\fR
- (i.e including but not going beyond \fIindex\fR). The other
- end of the selection is made the anchor point for future
- \fBselect to\fR commands. If the selection
- isn't currently in the entry, then a new selection is created to
- include the characters between \fIindex\fR and the most recent
- selection anchor point, inclusive.
- Returns an empty string.
- .TP
- \fIpathName \fBselect clear\fR
- Clear the selection if it is currently in this widget. If the
- selection isn't in this widget then the command has no effect.
- Returns an empty string.
- .TP
- \fIpathName \fBselect from \fIindex\fR
- Set the selection anchor point to just before the character
- given by \fIindex\fR. Doesn't change the selection.
- Returns an empty string.
- .TP
- \fIpathName \fBselect to \fIindex\fR
- Set the selection to consist of the elements from the anchor
- point to element \fIindex\fR, inclusive. The anchor point is
- determined by the most recent \fBselect from\fR or \fBselect adjust\fR
- command in this widget. If the selection isn't in this widget
- then a new selection is created using the most recent anchor point
- specified for the widget. Returns an empty string.
- .RE
- .TP
- \fIpathName \fBview \fIindex\fR
- Adjust the view in the entry so that element \fIindex\fR is
- at the left edge of the window. Returns an empty string.
-
- .SH "DEFAULT BINDINGS"
- .PP
- .VS
- Tk automatically creates class bindings for entries that give them
- the following default behavior:
- .IP [1]
- Clicking mouse button 1 in an entry positions the insertion cursor
- just before the character underneath the mouse cursor and sets the
- input focus to this widget.
- .IP [2]
- Dragging with mouse button 1 strokes out a selection between
- the insertion cursor and the character under the mouse.
- .IP [3]
- The ends of the selection can be adjusted by dragging with mouse
- button 1 while the shift key is down; this will adjust the end
- of the selection that was nearest to the mouse cursor when button
- 1 was pressed.
- .IP [4]
- The view in the entry can be adjusted by dragging with mouse button 2.
- .IP [5]
- If the input focus is in an entry widget and characters are typed on the
- keyboard, the characters are inserted just before the insertion cursor.
- .IP [6]
- Control-h and the Backspace and Delete keys erase the character just
- before the insertion cursor.
- .IP [7]
- Control-w erases the word just before the insertion cursor.
- .IP [8]
- Control-u clears the entry to an empty string.
- .IP [9]
- Control-v inserts the current selection just before the insertion cursor.
- .IP [10]
- Control-d deletes the selected characters; an error occurs if the selection
- is not in this widget.
- .PP
- If the entry is disabled using the \fBstate\fR option, then the entry's
- view can still be adjusted and text in the entry can still be selected,
- but no insertion cursor will be displayed and no text modifications will
- take place.
- .PP
- The behavior of entries can be changed by defining new bindings for
- individual widgets or by redefining the class bindings.
- .VE
-
- .SH KEYWORDS
- entry, widget
-