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diff --git a/tk8.6/doc/options.n b/tk8.6/doc/options.n new file mode 100644 index 0000000..738a1c6 --- /dev/null +++ b/tk8.6/doc/options.n @@ -0,0 +1,358 @@ +'\" +'\" Copyright (c) 1990-1994 The Regents of the University of California. +'\" Copyright (c) 1994-1996 Sun Microsystems, Inc. +'\" +'\" See the file "license.terms" for information on usage and redistribution +'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. +'\" +.TH options n 4.4 Tk "Tk Built-In Commands" +.so man.macros +.BS +'\" Note: do not modify the .SH NAME line immediately below! +.SH NAME +options \- Standard options supported by widgets +.BE +.SH DESCRIPTION +.PP +This manual entry describes the common configuration options supported +by widgets in the Tk toolkit. Every widget does not necessarily support +every option (see the manual entries for individual widgets for a list +of the standard options supported by that widget), but if a widget does +support an option with one of the names listed below, then the option +has exactly the effect described below. +.PP +In the descriptions below, +.QW "Command-Line Name" +refers to the +switch used in class commands and \fBconfigure\fR widget commands to +set this value. For example, if an option's command-line switch is +\fB\-foreground\fR and there exists a widget \fB.a.b.c\fR, then the +command +.CS +\&\fB.a.b.c\0\0configure\0\0\-foreground black\fR +.CE +may be used to specify the value \fBblack\fR for the option in +the widget \fB.a.b.c\fR. Command-line switches may be abbreviated, +as long as the abbreviation is unambiguous. +.QW "Database Name" +refers to the option's name in the option database (e.g. in .Xdefaults files). +.QW "Database Class" +refers to the option's class value in the option database. +.OP \-activebackground activeBackground Foreground +Specifies background color to use when drawing active elements. +An element (a widget or portion of a widget) is active if the +mouse cursor is positioned over the element and pressing a mouse button +will cause some action to occur. +If strict Motif compliance has been requested by setting the +\fBtk_strictMotif\fR variable, this option will normally be +ignored; the normal background color will be used instead. +For some elements on Windows and Macintosh systems, the active color +will only be used while mouse button 1 is pressed over the element. +.OP \-activeborderwidth activeBorderWidth BorderWidth +Specifies a non-negative value indicating +the width of the 3-D border drawn around active elements. See above for +definition of active elements. +The value may have any of the forms acceptable to \fBTk_GetPixels\fR. +This option is typically only available in widgets displaying more +than one element at a time (e.g. menus but not buttons). +.OP \-activeforeground activeForeground Background +Specifies foreground color to use when drawing active elements. +See above for definition of active elements. +.OP \-anchor anchor Anchor +Specifies how the information in a widget (e.g. text or a bitmap) +is to be displayed in the widget. +Must be one of the values \fBn\fR, \fBne\fR, \fBe\fR, \fBse\fR, +\fBs\fR, \fBsw\fR, \fBw\fR, \fBnw\fR, or \fBcenter\fR. +For example, \fBnw\fR means display the information such that its +top-left corner is at the top-left corner of the widget. +.OP "\-background or \-bg" background Background +Specifies the normal background color to use when displaying the +widget. +.OP \-bitmap bitmap Bitmap +Specifies a bitmap to display in the widget, in any of the forms +acceptable to \fBTk_GetBitmap\fR. +The exact way in which the bitmap is displayed may be affected by +other options such as \fB\-anchor\fR or \fB\-justify\fR. +Typically, if this option is specified then it overrides other +options that specify a textual value to display in the widget +but this is controlled by the \fB\-compound\fR option; +the \fB\-bitmap\fR option may be reset to an empty string to re-enable +a text display. +In widgets that support both \fB\-bitmap\fR and \fB\-image\fR options, +\fB\-image\fR will usually override \fB\-bitmap\fR. +.OP "\-borderwidth or \-bd" borderWidth BorderWidth +Specifies a non-negative value indicating the width +of the 3-D border to draw around the outside of the widget (if such a +border is being drawn; the \fB\-relief\fR option typically determines +this). The value may also be used when drawing 3-D effects in the +interior of the widget. +The value may have any of the forms acceptable to \fBTk_GetPixels\fR. +.OP \-cursor cursor Cursor +Specifies the mouse cursor to be used for the widget. +The value may have any of the forms acceptable to \fBTk_GetCursor\fR. +In addition, if an empty string is specified, it indicates that the +widget should defer to its parent for cursor specification. +.OP \-compound compound Compound +Specifies if the widget should display text and bitmaps/images at the +same time, and if so, where the bitmap/image should be placed relative +to the text. Must be one of the values \fBnone\fR, \fBbottom\fR, +\fBtop\fR, \fBleft\fR, \fBright\fR, or \fBcenter\fR. For example, the +(default) value \fBnone\fR specifies that the bitmap or image should +(if defined) be displayed instead of the text, the value \fBleft\fR +specifies that the bitmap or image should be displayed to the left of +the text, and the value \fBcenter\fR specifies that the bitmap or +image should be displayed on top of the text. +.OP \-disabledforeground disabledForeground DisabledForeground +Specifies foreground color to use when drawing a disabled element. +If the option is specified as an empty string (which is typically the +case on monochrome displays), disabled elements are drawn with the +normal foreground color but they are dimmed by drawing them +with a stippled fill pattern. +.OP \-exportselection exportSelection ExportSelection +Specifies whether or not a selection in the widget should also be +the X selection. +The value may have any of the forms accepted by \fBTcl_GetBoolean\fR, +such as \fBtrue\fR, \fBfalse\fR, \fB0\fR, \fB1\fR, \fByes\fR, or \fBno\fR. +If the selection is exported, then selecting in the widget deselects +the current X selection, selecting outside the widget deselects any +widget selection, and the widget will respond to selection retrieval +requests when it has a selection. The default is usually for widgets +to export selections. +.OP \-font font Font +Specifies the font to use when drawing text inside the widget. +The value may have any of the forms described in the \fBfont\fR manual +page under \fBFONT DESCRIPTION\fR. +.OP "\-foreground or \-fg" foreground Foreground +Specifies the normal foreground color to use when displaying the widget. +.OP \-highlightbackground highlightBackground HighlightBackground +Specifies the color to display in the traversal highlight region when +the widget does not have the input focus. +.OP \-highlightcolor highlightColor HighlightColor +Specifies the color to use for the traversal highlight rectangle that is +drawn around the widget when it has the input focus. +.OP \-highlightthickness highlightThickness HighlightThickness +Specifies a non-negative value indicating the width of the highlight +rectangle to draw around the outside of the widget when it has the +input focus. +The value may have any of the forms acceptable to \fBTk_GetPixels\fR. +If the value is zero, no focus highlight is drawn around the widget. +.OP \-image image Image +Specifies an image to display in the widget, which must have been +created with the \fBimage create\fR command. +Typically, if the \fB\-image\fR option is specified then it overrides other +options that specify a bitmap or textual value to display in the +widget, though this is controlled by the \fB\-compound\fR option; +the \fB\-image\fR option may be reset to an empty string to re-enable +a bitmap or text display. +.OP \-insertbackground insertBackground Foreground +Specifies the color to use as background in the area covered by the +insertion cursor. This color will normally override either the normal +background for the widget (or the selection background if the insertion +cursor happens to fall in the selection). +.OP \-insertborderwidth insertBorderWidth BorderWidth +Specifies a non-negative value indicating the width +of the 3-D border to draw around the insertion cursor. +The value may have any of the forms acceptable to \fBTk_GetPixels\fR. +.OP \-insertofftime insertOffTime OffTime +Specifies a non-negative integer value indicating the number of +milliseconds the insertion cursor should remain +.QW off +in each blink cycle. +If this option is zero then the cursor does not blink: it is on +all the time. +.OP \-insertontime insertOnTime OnTime +Specifies a non-negative integer value indicating the number of +milliseconds the insertion cursor should remain +.QW on +in each blink cycle. +.OP \-insertwidth insertWidth InsertWidth +Specifies a value indicating the total width of the insertion cursor. +The value may have any of the forms acceptable to \fBTk_GetPixels\fR. +If a border has been specified for the insertion +cursor (using the \fB\-insertborderwidth\fR option), the border +will be drawn inside the width specified by the \fB\-insertwidth\fR +option. +.OP \-jump jump Jump +For widgets with a slider that can be dragged to adjust a value, +such as scrollbars, this option determines when +notifications are made about changes in the value. +The option's value must be a boolean of the form accepted by +\fBTcl_GetBoolean\fR. +If the value is false, updates are made continuously as the +slider is dragged. +If the value is true, updates are delayed until the mouse button +is released to end the drag; at that point a single notification +is made (the value +.QW jumps +rather than changing smoothly). +.OP \-justify justify Justify +When there are multiple lines of text displayed in a widget, this +option determines how the lines line up with each other. +Must be one of \fBleft\fR, \fBcenter\fR, or \fBright\fR. +\fBLeft\fR means that the lines' left edges all line up, \fBcenter\fR +means that the lines' centers are aligned, and \fBright\fR means +that the lines' right edges line up. +.OP \-orient orient Orient +For widgets that can lay themselves out with either a horizontal +or vertical orientation, such as scrollbars, this option specifies +which orientation should be used. Must be either \fBhorizontal\fR +or \fBvertical\fR or an abbreviation of one of these. +.OP \-padx padX Pad +Specifies a non-negative value indicating how much extra space +to request for the widget in the X-direction. +The value may have any of the forms acceptable to \fBTk_GetPixels\fR. +When computing how large a window it needs, the widget will +add this amount to the width it would normally need (as determined +by the width of the things displayed in the widget); if the geometry +manager can satisfy this request, the widget will end up with extra +internal space to the left and/or right of what it displays inside. +Most widgets only use this option for padding text: if they are +displaying a bitmap or image, then they usually ignore padding +options. +.OP \-pady padY Pad +Specifies a non-negative value indicating how much extra space +to request for the widget in the Y-direction. +The value may have any of the forms acceptable to \fBTk_GetPixels\fR. +When computing how large a window it needs, the widget will add +this amount to the height it would normally need (as determined by +the height of the things displayed in the widget); if the geometry +manager can satisfy this request, the widget will end up with extra +internal space above and/or below what it displays inside. +Most widgets only use this option for padding text: if they are +displaying a bitmap or image, then they usually ignore padding +options. +.OP \-relief relief Relief +Specifies the 3-D effect desired for the widget. Acceptable +values are \fBraised\fR, \fBsunken\fR, \fBflat\fR, \fBridge\fR, +\fBsolid\fR, and \fBgroove\fR. +The value +indicates how the interior of the widget should appear relative +to its exterior; for example, \fBraised\fR means the interior of +the widget should appear to protrude from the screen, relative to +the exterior of the widget. +.OP \-repeatdelay repeatDelay RepeatDelay +Specifies the number of milliseconds a button or key must be held +down before it begins to auto-repeat. Used, for example, on the +up- and down-arrows in scrollbars. +.OP \-repeatinterval repeatInterval RepeatInterval +Used in conjunction with \fB\-repeatdelay\fR: once auto-repeat +begins, this option determines the number of milliseconds between +auto-repeats. +.OP \-selectbackground selectBackground Foreground +Specifies the background color to use when displaying selected +items. +.OP \-selectborderwidth selectBorderWidth BorderWidth +Specifies a non-negative value indicating the width +of the 3-D border to draw around selected items. +The value may have any of the forms acceptable to \fBTk_GetPixels\fR. +.OP \-selectforeground selectForeground Background +Specifies the foreground color to use when displaying selected +items. +.OP \-setgrid setGrid SetGrid +Specifies a boolean value that determines whether this widget controls the +resizing grid for its top-level window. +This option is typically used in text widgets, where the information +in the widget has a natural size (the size of a character) and it makes +sense for the window's dimensions to be integral numbers of these units. +These natural window sizes form a grid. +If the \fB\-setgrid\fR option is set to true then the widget will +communicate with the window manager so that when the user interactively +resizes the top-level window that contains the widget, the dimensions of +the window will be displayed to the user in grid units and the window +size will be constrained to integral numbers of grid units. +See the section \fBGRIDDED GEOMETRY MANAGEMENT\fR in the \fBwm\fR manual +entry for more details. +.OP \-takefocus takeFocus TakeFocus +Determines whether the window accepts the focus during keyboard +traversal (e.g., Tab and Shift-Tab). +Before setting the focus to a window, the traversal scripts +consult the value of the \fB\-takefocus\fR option. +A value of \fB0\fR means that the window should be skipped entirely +during keyboard traversal. +\fB1\fR means that the window should receive the input +focus as long as it is viewable (it and all of its ancestors are mapped). +An empty value for the option means that the traversal scripts make +the decision about whether or not to focus on the window: the current +algorithm is to skip the window if it is +disabled, if it has no key bindings, or if it is not viewable. +If the value has any other form, then the traversal scripts take +the value, append the name of the window to it (with a separator space), +and evaluate the resulting string as a Tcl script. +The script must return \fB0\fR, \fB1\fR, or an empty string: a +\fB0\fR or \fB1\fR value specifies whether the window will receive +the input focus, and an empty string results in the default decision +described above. +Note: this interpretation of the option is defined entirely by +the Tcl scripts that implement traversal: the widget implementations +ignore the option entirely, so you can change its meaning if you +redefine the keyboard traversal scripts. +.OP \-text text Text +Specifies a string to be displayed inside the widget. The way in which +the string is displayed depends on the particular widget and may be +determined by other options, such as \fB\-anchor\fR or \fB\-justify\fR. +.OP \-textvariable textVariable Variable +Specifies the name of a global variable. The value of the variable is a text +string to be displayed inside the widget; if the variable value changes +then the widget will automatically update itself to reflect the new value. +The way in which the string is displayed in the widget depends on the +particular widget and may be determined by other options, such as +\fB\-anchor\fR or \fB\-justify\fR. +.OP \-troughcolor troughColor Background +Specifies the color to use for the rectangular trough areas +in widgets such as scrollbars and scales. This option is ignored for +scrollbars on Windows (native widget does not recognize this option). +.OP \-underline underline Underline +Specifies the integer index of a character to underline in the widget. +This option is used by the default bindings to implement keyboard +traversal for menu buttons and menu entries. +0 corresponds to the first character of the text displayed in the +widget, 1 to the next character, and so on. +.OP \-wraplength wrapLength WrapLength +For widgets that can perform word-wrapping, this option specifies +the maximum line length. +Lines that would exceed this length are wrapped onto the next line, +so that no line is longer than the specified length. +The value may be specified in any of the standard forms for +screen distances. +If this value is less than or equal to 0 then no wrapping is done: lines +will break only at newline characters in the text. +.OP \-xscrollcommand xScrollCommand ScrollCommand +Specifies the prefix for a command used to communicate with horizontal +scrollbars. +When the view in the widget's window changes (or +whenever anything else occurs that could change the display in a +scrollbar, such as a change in the total size of the widget's +contents), the widget will +generate a Tcl command by concatenating the scroll command and +two numbers. +Each of the numbers is a fraction between 0 and 1, which indicates +a position in the document. 0 indicates the beginning of the document, +1 indicates the end, .333 indicates a position one third the way through +the document, and so on. +The first fraction indicates the first information in the document +that is visible in the window, and the second fraction indicates +the information just after the last portion that is visible. +The command is +then passed to the Tcl interpreter for execution. Typically the +\fB\-xscrollcommand\fR option consists of the path name of a scrollbar +widget followed by +.QW set , +e.g. +.QW ".x.scrollbar set" : +this will cause +the scrollbar to be updated whenever the view in the window changes. +If this option is not specified, then no command will be executed. +.OP \-yscrollcommand yScrollCommand ScrollCommand +Specifies the prefix for a command used to communicate with vertical +scrollbars. This option is treated in the same way as the +\fB\-xscrollcommand\fR option, except that it is used for vertical +scrollbars and is provided by widgets that support vertical scrolling. +See the description of \fB\-xscrollcommand\fR for details +on how this option is used. +.SH "SEE ALSO" +colors, cursors, font +.SH KEYWORDS +class, name, standard option, switch +'\" Local Variables: +'\" mode: nroff +'\" End: |