| '\" |
| '\" Copyright (c) 1990-1994 The Regents of the University of California. |
| '\" Copyright (c) 1994-1996 Sun Microsystems, Inc. |
| '\" Copyright (c) 1998-2000 Scriptics Corporation. |
| '\" |
| '\" See the file "license.terms" for information on usage and redistribution |
| '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
| '\" |
| '\" RCS: @(#) $Id: entry.n,v 1.9 2000/12/12 10:35:25 dkf Exp $ |
| '\" |
| '\" The definitions below are for supplemental macros used in Tcl/Tk |
| '\" manual entries. |
| '\" |
| '\" .AP type name in/out ?indent? |
| '\" Start paragraph describing an argument to a library procedure. |
| '\" type is type of argument (int, etc.), in/out is either "in", "out", |
| '\" or "in/out" to describe whether procedure reads or modifies arg, |
| '\" and indent is equivalent to second arg of .IP (shouldn't ever be |
| '\" needed; use .AS below instead) |
| '\" |
| '\" .AS ?type? ?name? |
| '\" Give maximum sizes of arguments for setting tab stops. Type and |
| '\" name are examples of largest possible arguments that will be passed |
| '\" to .AP later. If args are omitted, default tab stops are used. |
| '\" |
| '\" .BS |
| '\" Start box enclosure. From here until next .BE, everything will be |
| '\" enclosed in one large box. |
| '\" |
| '\" .BE |
| '\" End of box enclosure. |
| '\" |
| '\" .CS |
| '\" Begin code excerpt. |
| '\" |
| '\" .CE |
| '\" End code excerpt. |
| '\" |
| '\" .VS ?version? ?br? |
| '\" Begin vertical sidebar, for use in marking newly-changed parts |
| '\" of man pages. The first argument is ignored and used for recording |
| '\" the version when the .VS was added, so that the sidebars can be |
| '\" found and removed when they reach a certain age. If another argument |
| '\" is present, then a line break is forced before starting the sidebar. |
| '\" |
| '\" .VE |
| '\" End of vertical sidebar. |
| '\" |
| '\" .DS |
| '\" Begin an indented unfilled display. |
| '\" |
| '\" .DE |
| '\" End of indented unfilled display. |
| '\" |
| '\" .SO |
| '\" Start of list of standard options for a Tk widget. The |
| '\" options follow on successive lines, in four columns separated |
| '\" by tabs. |
| '\" |
| '\" .SE |
| '\" End of list of standard options for a Tk widget. |
| '\" |
| '\" .OP cmdName dbName dbClass |
| '\" Start of description of a specific option. cmdName gives the |
| '\" option's name as specified in the class command, dbName gives |
| '\" the option's name in the option database, and dbClass gives |
| '\" the option's class in the option database. |
| '\" |
| '\" .UL arg1 arg2 |
| '\" Print arg1 underlined, then print arg2 normally. |
| '\" |
| '\" RCS: @(#) $Id: man.macros,v 1.4 2000/08/25 06:18:32 ericm Exp $ |
| '\" |
| '\" # Set up traps and other miscellaneous stuff for Tcl/Tk man pages. |
| .if t .wh -1.3i ^B |
| .nr ^l \n(.l |
| .ad b |
| '\" # Start an argument description |
| .de AP |
| .ie !"\\$4"" .TP \\$4 |
| .el \{\ |
| . ie !"\\$2"" .TP \\n()Cu |
| . el .TP 15 |
| .\} |
| .ta \\n()Au \\n()Bu |
| .ie !"\\$3"" \{\ |
| \&\\$1 \\fI\\$2\\fP (\\$3) |
| .\".b |
| .\} |
| .el \{\ |
| .br |
| .ie !"\\$2"" \{\ |
| \&\\$1 \\fI\\$2\\fP |
| .\} |
| .el \{\ |
| \&\\fI\\$1\\fP |
| .\} |
| .\} |
| .. |
| '\" # define tabbing values for .AP |
| .de AS |
| .nr )A 10n |
| .if !"\\$1"" .nr )A \\w'\\$1'u+3n |
| .nr )B \\n()Au+15n |
| .\" |
| .if !"\\$2"" .nr )B \\w'\\$2'u+\\n()Au+3n |
| .nr )C \\n()Bu+\\w'(in/out)'u+2n |
| .. |
| .AS Tcl_Interp Tcl_CreateInterp in/out |
| '\" # BS - start boxed text |
| '\" # ^y = starting y location |
| '\" # ^b = 1 |
| .de BS |
| .br |
| .mk ^y |
| .nr ^b 1u |
| .if n .nf |
| .if n .ti 0 |
| .if n \l'\\n(.lu\(ul' |
| .if n .fi |
| .. |
| '\" # BE - end boxed text (draw box now) |
| .de BE |
| .nf |
| .ti 0 |
| .mk ^t |
| .ie n \l'\\n(^lu\(ul' |
| .el \{\ |
| .\" Draw four-sided box normally, but don't draw top of |
| .\" box if the box started on an earlier page. |
| .ie !\\n(^b-1 \{\ |
| \h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul' |
| .\} |
| .el \}\ |
| \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul' |
| .\} |
| .\} |
| .fi |
| .br |
| .nr ^b 0 |
| .. |
| '\" # VS - start vertical sidebar |
| '\" # ^Y = starting y location |
| '\" # ^v = 1 (for troff; for nroff this doesn't matter) |
| .de VS |
| .if !"\\$2"" .br |
| .mk ^Y |
| .ie n 'mc \s12\(br\s0 |
| .el .nr ^v 1u |
| .. |
| '\" # VE - end of vertical sidebar |
| .de VE |
| .ie n 'mc |
| .el \{\ |
| .ev 2 |
| .nf |
| .ti 0 |
| .mk ^t |
| \h'|\\n(^lu+3n'\L'|\\n(^Yu-1v\(bv'\v'\\n(^tu+1v-\\n(^Yu'\h'-|\\n(^lu+3n' |
| .sp -1 |
| .fi |
| .ev |
| .\} |
| .nr ^v 0 |
| .. |
| '\" # Special macro to handle page bottom: finish off current |
| '\" # box/sidebar if in box/sidebar mode, then invoked standard |
| '\" # page bottom macro. |
| .de ^B |
| .ev 2 |
| 'ti 0 |
| 'nf |
| .mk ^t |
| .if \\n(^b \{\ |
| .\" Draw three-sided box if this is the box's first page, |
| .\" draw two sides but no top otherwise. |
| .ie !\\n(^b-1 \h'-1.5n'\L'|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c |
| .el \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\h'|0u'\c |
| .\} |
| .if \\n(^v \{\ |
| .nr ^x \\n(^tu+1v-\\n(^Yu |
| \kx\h'-\\nxu'\h'|\\n(^lu+3n'\ky\L'-\\n(^xu'\v'\\n(^xu'\h'|0u'\c |
| .\} |
| .bp |
| 'fi |
| .ev |
| .if \\n(^b \{\ |
| .mk ^y |
| .nr ^b 2 |
| .\} |
| .if \\n(^v \{\ |
| .mk ^Y |
| .\} |
| .. |
| '\" # DS - begin display |
| .de DS |
| .RS |
| .nf |
| .sp |
| .. |
| '\" # DE - end display |
| .de DE |
| .fi |
| .RE |
| .sp |
| .. |
| '\" # SO - start of list of standard options |
| .de SO |
| .SH "STANDARD OPTIONS" |
| .LP |
| .nf |
| .ta 5.5c 11c |
| .ft B |
| .. |
| '\" # SE - end of list of standard options |
| .de SE |
| .fi |
| .ft R |
| .LP |
| See the \\fBoptions\\fR manual entry for details on the standard options. |
| .. |
| '\" # OP - start of full description for a single option |
| .de OP |
| .LP |
| .nf |
| .ta 4c |
| Command-Line Name: \\fB\\$1\\fR |
| Database Name: \\fB\\$2\\fR |
| Database Class: \\fB\\$3\\fR |
| .fi |
| .IP |
| .. |
| '\" # CS - begin code excerpt |
| .de CS |
| .RS |
| .nf |
| .ta .25i .5i .75i 1i |
| .. |
| '\" # CE - end code excerpt |
| .de CE |
| .fi |
| .RE |
| .. |
| .de UL |
| \\$1\l'|0\(ul'\\$2 |
| .. |
| .TH entry n 8.3 Tk "Tk Built-In Commands" |
| .BS |
| '\" Note: do not modify the .SH NAME line immediately below! |
| .SH NAME |
| entry \- Create and manipulate entry widgets |
| .SH SYNOPSIS |
| \fBentry\fR \fIpathName \fR?\fIoptions\fR? |
| .SO |
| \-background \-highlightthickness \-selectbackground |
| \-borderwidth \-insertbackground \-selectborderwidth |
| \-cursor \-insertborderwidth \-selectforeground |
| \-exportselection \-insertofftime \-takefocus |
| \-font \-insertontime \-textvariable |
| \-foreground \-insertwidth \-xscrollcommand |
| \-highlightbackground \-justify |
| \-highlightcolor \-relief |
| .SE |
| .SH "WIDGET-SPECIFIC OPTIONS" |
| .VS 8.4 |
| .OP \-disabledbackground disabledBackground DisabledBackground |
| Specifies the background color to use when the entry is disabled. If |
| this option is the empty string, the normal background color is used. |
| .OP \-disabledforeground disabledForeground DisabledForeground |
| Specifies the foreground color to use when the entry is disabled. If |
| this option is the empty string, the normal foreground color is used. |
| .VE 8.4 |
| .VS 8.3 |
| .OP "\-invalidcommand or \-invcmd" invalidCommand InvalidCommand |
| Specifies a script to eval when \fBvalidateCommand\fR returns 0. |
| Setting it to {} disables this feature (the default). The best use |
| of this option is to set it to \fIbell\fR. See \fBValidation\fR |
| below for more information. |
| .VE |
| .VS 8.4 |
| .OP \-readonlybackground readonlyBackground ReadonlyBackground |
| Specifies the background color to use when the entry is readonly. If |
| this option is the empty string, the normal background color is used. |
| .VE |
| .OP \-show show Show |
| If this option is specified, then the true contents of the entry |
| are not displayed in the window. |
| Instead, each character in the entry's value will be displayed as |
| the first character in the value of this option, such as ``*''. |
| This is useful, for example, if the entry is to be used to enter |
| a password. |
| If characters in the entry are selected and copied elsewhere, the |
| information copied will be what is displayed, not the true contents |
| of the entry. |
| .VS 8.4 |
| .OP \-state state State |
| Specifies one of three states for the entry: \fBnormal\fR, |
| \fBdisabled\fR, or \fBreadonly\fR. If the entry is readonly, 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; the |
| contents of the widget may still be selected. If the entry is |
| disabled, the value may not be changed, no insertion cursor will be |
| displayed, the contents will not be selectable, and the entry may |
| be displayed in a different color, depending on the values of the |
| \fB-disabledforeground\fR and \fB-disabledbackground\fR options. |
| .VE 8.4 |
| .VS 8.3 |
| .OP \-validate validate Validate |
| Specifies the mode in which validation should operate: \fBnone\fR, |
| \fBfocus\fR, \fBfocusin\fR, \fBfocusout\fR, \fBkey\fR, or \fBall\fR. |
| It defaults to \fBnone\fR. When you want validation, you must explicitly |
| state which mode you wish to use. See \fBValidation\fR below for more. |
| .OP "\-validatecommand or \-vcmd" validateCommand ValidateCommand |
| Specifies a script to eval when you want to validate the input into |
| the entry widget. Setting it to {} disables this feature (the default). |
| This command must return a valid tcl boolean value. If it returns 0 (or |
| the valid tcl boolean equivalent) then it means you reject the new edition |
| and it will not occur and the \fBinvalidCommand\fR will be evaluated if it |
| is set. If it returns 1, then the new edition occurs. |
| See \fBValidation\fR below for more information. |
| .VE |
| .OP \-width width Width |
| Specifies an integer value indicating the desired width of the entry window, |
| in average-size characters of the widget's font. |
| If the value is less than or equal to zero, the widget picks a |
| size just large enough to hold its current text. |
| .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. |
| If an entry is exporting its selection (see the \fBexportSelection\fR |
| option), then it will observe the standard X11 protocols for handling the |
| 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 \fBxScrollCommand\fR mechanism for interacting with |
| scrollbars (see the description of the \fBxScrollCommand\fR option |
| for details). They also support scanning, as described below. |
| |
| .VS 8.3 |
| .SH VALIDATION |
| .PP |
| Validation works by setting the \fBvalidateCommand\fR |
| option to a script which will be evaluated according to the \fBvalidate\fR |
| option as follows: |
| .PP |
| .IP \fBnone\fR 10 |
| Default. This means no validation will occur. |
| .IP \fBfocus\fR 10 |
| \fBvalidateCommand\fR will be called when the entry receives or |
| loses focus. |
| .IP \fBfocusin\fR 10 |
| \fBvalidateCommand\fR will be called when the entry receives focus. |
| .IP \fBfocusout\fR 10 |
| \fBvalidateCommand\fR will be called when the entry loses focus. |
| .IP \fBkey\fR 10 |
| \fBvalidateCommand\fR will be called when the entry is edited. |
| .IP \fBall\fR 10 |
| \fBvalidateCommand\fR will be called for all above conditions. |
| .PP |
| It is possible to perform percent substitutions on the \fBvalidateCommand\fR |
| and \fBinvalidCommand\fR, |
| just as you would in a \fBbind\fR script. The following substitutions |
| are recognized: |
| .PP |
| .IP \fB%d\fR 5 |
| Type of action: 1 for \fBinsert\fR, 0 for \fBdelete\fR, |
| or -1 for focus, forced or textvariable validation. |
| .IP \fB%i\fR 5 |
| Index of char string to be inserted/deleted, if any, otherwise -1. |
| .IP \fB%P\fR 5 |
| The value of the entry should edition occur. If you are configuring the |
| entry widget to have a new textvariable, this will be the value of that |
| textvariable. |
| .IP \fB%s\fR 5 |
| The current value of entry before edition. |
| .IP \fB%S\fR 5 |
| The text string being inserted/deleted, if any, {} otherwise. |
| .IP \fB%v\fR 5 |
| The type of validation currently set. |
| .IP \fB%V\fR 5 |
| The type of validation that triggered the callback |
| (key, focusin, focusout, forced). |
| .IP \fB%W\fR 5 |
| The name of the entry widget. |
| .PP |
| In general, the \fBtextVariable\fR and \fBvalidateCommand\fR can be |
| dangerous to mix. Any problems have been overcome so that using the |
| \fBvalidateCommand\fR will not interfere with the traditional behavior of |
| the entry widget. Using the \fBtextVariable\fR for read-only purposes will |
| never cause problems. The danger comes when you try set the |
| \fBtextVariable\fR to something that the \fBvalidateCommand\fR would not |
| accept, which causes \fBvalidate\fR to become \fInone\fR (the |
| \fBinvalidCommand\fR will not be triggered). The same happens |
| when an error occurs evaluating the \fBvalidateCommand\fR. |
| .PP |
| Primarily, an error will occur when the \fBvalidateCommand\fR or |
| \fBinvalidCommand\fR encounters an error in its script while evaluating or |
| \fBvalidateCommand\fR does not return a valid tcl boolean value. The |
| \fBvalidate\fR option will also set itself to \fBnone\fR when you edit the |
| entry widget from within either the \fBvalidateCommand\fR or the |
| \fBinvalidCommand\fR. Such editions will override the one that was being |
| validated. If you wish to edit the entry widget (for example set it to {}) |
| during validation and still have the \fBvalidate\fR option set, you should |
| include the command |
| .CS |
| \fIafter idle {%W config -validate %v}\fR |
| .CE |
| in the \fBvalidateCommand\fR or \fBinvalidCommand\fR (whichever one you |
| were editing the entry widget from). It is also recommended to not set an |
| associated \fBtextVariable\fR during validation, as that can cause the |
| entry widget to become out of sync with the \fBtextVariable\fR. |
| .VE |
| |
| .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: |
| .CS |
| \fIpathName option \fR?\fIarg arg ...\fR? |
| .CE |
| \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 |
| \fBanchor\fR |
| Indicates the anchor point for the selection, which is set with the |
| \fBselect from\fR and \fBselect adjust\fR widget commands. |
| .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 |
| 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 character just after the last one 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 \fBbbox \fIindex\fR |
| Returns a list of four numbers describing the bounding box of the |
| character given by \fIindex\fR. |
| The first two elements of the list give the x and y coordinates of |
| the upper-left corner of the screen area covered by the character |
| (in pixels relative to the widget) and the last two elements give |
| the width and height of the character, in pixels. |
| The bounding box may refer to a region outside the visible area |
| of the window. |
| .TP |
| \fIpathName \fBcget\fR \fIoption\fR |
| Returns the current value of the configuration option given |
| by \fIoption\fR. |
| \fIOption\fR may have any of the values accepted by the \fBentry\fR |
| command. |
| .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 is the index of the first character to delete, and |
| \fIlast\fR is the index of the character just after the last |
| one to delete. |
| If \fIlast\fR isn't specified it defaults to \fIfirst\fR+1, |
| 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 |
| Arrange for the insertion cursor to be displayed just before the character |
| given by \fIindex\fR. Returns an empty string. |
| .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 \fBselection \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 \fBselection 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 \fBselection 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 \fBselection 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 \fBselection present\fR |
| Returns 1 if there is are characters selected in the entry, |
| 0 if nothing is selected. |
| .TP |
| \fIpathName \fBselection range \fIstart\fR \fIend\fR |
| Sets the selection to include the characters starting with |
| the one indexed by \fIstart\fR and ending with the one just |
| before \fIend\fR. |
| If \fIend\fR refers to the same character as \fIstart\fR or an |
| earlier one, then the entry's selection is cleared. |
| .TP |
| \fIpathName \fBselection to \fIindex\fR |
| If \fIindex\fR is before the anchor point, set the selection |
| to the characters from \fIindex\fR up to but not including |
| the anchor point. |
| If \fIindex\fR is the same as the anchor point, do nothing. |
| If \fIindex\fR is after the anchor point, set the selection |
| to the characters from the anchor point up to but not including |
| \fIindex\fR. |
| 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 |
| .VS 8.3 |
| \fIpathName \fBvalidate\fR |
| This command is used to force an evaluation of the \fBvalidateCommand\fR |
| independent of the conditions specified by the \fBvalidate\fR option. |
| This is done by temporarily setting the \fBvalidate\fR option to \fBall\fR. |
| It returns 0 or 1. |
| .VE |
| .TP |
| \fIpathName \fBxview \fIargs\fR |
| This command is used to query and change the horizontal position of the |
| text in the widget's window. It can take any of the following |
| forms: |
| .RS |
| .TP |
| \fIpathName \fBxview\fR |
| Returns a list containing two elements. |
| Each element is a real fraction between 0 and 1; together they describe |
| the horizontal span that is visible in the window. |
| For example, if the first element is .2 and the second element is .6, |
| 20% of the entry's text is off-screen to the left, the middle 40% is visible |
| in the window, and 40% of the text is off-screen to the right. |
| These are the same values passed to scrollbars via the \fB\-xscrollcommand\fR |
| option. |
| .TP |
| \fIpathName \fBxview\fR \fIindex\fR |
| Adjusts the view in the window so that the character given by \fIindex\fR |
| is displayed at the left edge of the window. |
| .TP |
| \fIpathName \fBxview moveto\fI fraction\fR |
| Adjusts the view in the window so that the character \fIfraction\fR of the |
| way through the text appears at the left edge of the window. |
| \fIFraction\fR must be a fraction between 0 and 1. |
| .TP |
| \fIpathName \fBxview scroll \fInumber what\fR |
| This command shifts the view in the window left or right according to |
| \fInumber\fR and \fIwhat\fR. |
| \fINumber\fR must be an integer. |
| \fIWhat\fR must be either \fBunits\fR or \fBpages\fR or an abbreviation |
| of one of these. |
| If \fIwhat\fR is \fBunits\fR, the view adjusts left or right by |
| \fInumber\fR average-width characters on the display; if it is |
| \fBpages\fR then the view adjusts by \fInumber\fR screenfuls. |
| If \fInumber\fR is negative then characters farther to the left |
| become visible; if it is positive then characters farther to the right |
| become visible. |
| .RE |
| |
| .SH "DEFAULT BINDINGS" |
| .PP |
| Tk automatically creates class bindings for entries that give them |
| the following default behavior. |
| In the descriptions below, ``word'' refers to a contiguous group |
| of letters, digits, or ``_'' characters, or any single character |
| other than these. |
| .IP [1] |
| Clicking mouse button 1 positions the insertion cursor |
| just before the character underneath the mouse cursor, sets the |
| input focus to this widget, and clears any selection in the widget. |
| Dragging with mouse button 1 strokes out a selection between |
| the insertion cursor and the character under the mouse. |
| .IP [2] |
| Double-clicking with mouse button 1 selects the word under the mouse |
| and positions the insertion cursor at the beginning of the word. |
| Dragging after a double click will stroke out a selection consisting |
| of whole words. |
| .IP [3] |
| Triple-clicking with mouse button 1 selects all of the text in the |
| entry and positions the insertion cursor before the first character. |
| .IP [4] |
| 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. |
| If the button is double-clicked before dragging then the selection |
| will be adjusted in units of whole words. |
| .IP [5] |
| Clicking mouse button 1 with the Control key down will position the |
| insertion cursor in the entry without affecting the selection. |
| .IP [6] |
| If any normal printing characters are typed in an entry, they are |
| inserted at the point of the insertion cursor. |
| .IP [7] |
| The view in the entry can be adjusted by dragging with mouse button 2. |
| If mouse button 2 is clicked without moving the mouse, the selection |
| is copied into the entry at the position of the mouse cursor. |
| .IP [8] |
| If the mouse is dragged out of the entry on the left or right sides |
| while button 1 is pressed, the entry will automatically scroll to |
| make more text visible (if there is more text off-screen on the side |
| where the mouse left the window). |
| .IP [9] |
| The Left and Right keys move the insertion cursor one character to the |
| left or right; they also clear any selection in the entry and set |
| the selection anchor. |
| If Left or Right is typed with the Shift key down, then the insertion |
| cursor moves and the selection is extended to include the new character. |
| Control-Left and Control-Right move the insertion cursor by words, and |
| Control-Shift-Left and Control-Shift-Right move the insertion cursor |
| by words and also extend the selection. |
| Control-b and Control-f behave the same as Left and Right, respectively. |
| Meta-b and Meta-f behave the same as Control-Left and Control-Right, |
| respectively. |
| .IP [10] |
| The Home key, or Control-a, will move the insertion cursor to the |
| beginning of the entry and clear any selection in the entry. |
| Shift-Home moves the insertion cursor to the beginning of the entry |
| and also extends the selection to that point. |
| .IP [11] |
| The End key, or Control-e, will move the insertion cursor to the |
| end of the entry and clear any selection in the entry. |
| Shift-End moves the cursor to the end and extends the selection |
| to that point. |
| .IP [12] |
| The Select key and Control-Space set the selection anchor to the position |
| of the insertion cursor. They don't affect the current selection. |
| Shift-Select and Control-Shift-Space adjust the selection to the |
| current position of the insertion cursor, selecting from the anchor |
| to the insertion cursor if there was not any selection previously. |
| .IP [13] |
| Control-/ selects all the text in the entry. |
| .IP [14] |
| Control-\e clears any selection in the entry. |
| .IP [15] |
| The F16 key (labelled Copy on many Sun workstations) or Meta-w |
| copies the selection in the widget to the clipboard, if there is a selection. |
| .IP [16] |
| The F20 key (labelled Cut on many Sun workstations) or Control-w |
| copies the selection in the widget to the clipboard and deletes |
| the selection. |
| If there is no selection in the widget then these keys have no effect. |
| .IP [17] |
| The F18 key (labelled Paste on many Sun workstations) or Control-y |
| inserts the contents of the clipboard at the position of the |
| insertion cursor. |
| .IP [18] |
| The Delete key deletes the selection, if there is one in the entry. |
| If there is no selection, it deletes the character to the right of |
| the insertion cursor. |
| .IP [19] |
| The BackSpace key and Control-h delete the selection, if there is one |
| in the entry. |
| If there is no selection, it deletes the character to the left of |
| the insertion cursor. |
| .IP [20] |
| Control-d deletes the character to the right of the insertion cursor. |
| .IP [21] |
| Meta-d deletes the word to the right of the insertion cursor. |
| .IP [22] |
| Control-k deletes all the characters to the right of the insertion |
| cursor. |
| .IP [23] |
| Control-t reverses the order of the two characters to the right of |
| the insertion cursor. |
| .PP |
| If the entry is disabled using the \fB\-state\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 |
| .VS |
| except if the entry is linked to a variable using the \fB\-textvariable\fR |
| option, in which case any changes to the variable are reflected by the |
| entry whatever the value of its \fB\-state\fR option. |
| .VE |
| .PP |
| The behavior of entries can be changed by defining new bindings for |
| individual widgets or by redefining the class bindings. |
| |
| .SH KEYWORDS |
| entry, widget |