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diff --git a/tk/doc/radiobutton.n b/tk/doc/radiobutton.n new file mode 100644 index 00000000000..7b32b8dc62d --- /dev/null +++ b/tk/doc/radiobutton.n @@ -0,0 +1,233 @@ +'\" +'\" 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. +'\" +'\" RCS: @(#) $Id$ +'\" +.so man.macros +.TH radiobutton n 4.4 Tk "Tk Built-In Commands" +.BS +'\" Note: do not modify the .SH NAME line immediately below! +.SH NAME +radiobutton \- Create and manipulate radiobutton widgets +.SH SYNOPSIS +\fBradiobutton\fR \fIpathName \fR?\fIoptions\fR? +.SO +\-activebackground \-cursor \-highlightthickness \-takefocus +\-activeforeground \-disabledforeground \-image \-text +\-anchor \-font \-justify \-textvariable +\-background \-foreground \-padx \-underline +\-bitmap \-highlightbackground \-pady \-wraplength +\-borderwidth \-highlightcolor \-relief +.SE +.SH "WIDGET-SPECIFIC OPTIONS" +.OP \-command command Command +Specifies a Tcl command to associate with the button. This command +is typically invoked when mouse button 1 is released over the button +window. The button's global variable (\fB\-variable\fR option) will +be updated before the command is invoked. +.OP \-height height Height +Specifies a desired height for the button. +If an image or bitmap is being displayed in the button then the value is in +screen units (i.e. any of the forms acceptable to \fBTk_GetPixels\fR); +for text it is in lines of text. +If this option isn't specified, the button's desired height is computed +from the size of the image or bitmap or text being displayed in it. +.OP \-indicatoron indicatorOn IndicatorOn +Specifies whether or not the indicator should be drawn. Must be a +proper boolean value. If false, the \fBrelief\fR option is +ignored and the widget's relief is always sunken if the widget is +selected and raised otherwise. +.OP \-selectcolor selectColor Background +Specifies a background color to use when the button is selected. +If \fBindicatorOn\fR is true then the color applies to the indicator. +Under Windows, this color is used as the background for the indicator +regardless of the select state. +If \fBindicatorOn\fR is false, this color is used as the background +for the entire widget, in place of \fBbackground\fR or \fBactiveBackground\fR, +whenever the widget is selected. +If specified as an empty string then no special color is used for +displaying when the widget is selected. +.OP \-selectimage selectImage SelectImage +Specifies an image to display (in place of the \fBimage\fR option) +when the radiobutton is selected. +This option is ignored unless the \fBimage\fR option has been +specified. +.OP \-state state State +Specifies one of three states for the radiobutton: \fBnormal\fR, \fBactive\fR, +or \fBdisabled\fR. In normal state the radiobutton is displayed using the +\fBforeground\fR and \fBbackground\fR options. The active state is +typically used when the pointer is over the radiobutton. In active state +the radiobutton is displayed using the \fBactiveForeground\fR and +\fBactiveBackground\fR options. Disabled state means that the radiobutton +should be insensitive: the default bindings will refuse to activate +the widget and will ignore mouse button presses. +In this state the \fBdisabledForeground\fR and +\fBbackground\fR options determine how the radiobutton is displayed. +.OP \-value value Value +Specifies value to store in the button's associated variable whenever +this button is selected. +.OP \-variable variable Variable +Specifies name of global variable to set whenever this button is +selected. Changes in this variable also cause the button to select +or deselect itself. +Defaults to the value \fBselectedButton\fR. +.OP \-width width Width +Specifies a desired width for the button. +If an image or bitmap is being displayed in the button, the value is in +screen units (i.e. any of the forms acceptable to \fBTk_GetPixels\fR); +for text it is in characters. +If this option isn't specified, the button's desired width is computed +from the size of the image or bitmap or text being displayed in it. +.BE + +.SH DESCRIPTION +.PP +The \fBradiobutton\fR command creates a new window (given by the +\fIpathName\fR argument) and makes it into a radiobutton widget. +Additional +options, described above, may be specified on the command line +or in the option database +to configure aspects of the radiobutton such as its colors, font, +text, and initial relief. The \fBradiobutton\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 +.VS +A radiobutton is a widget that displays a textual string, bitmap or image +and a diamond or circle called an \fIindicator\fR. +.VE +If text is displayed, it must all be in a single font, but it +can occupy multiple lines on the screen (if it contains newlines +or if wrapping occurs because of the \fBwrapLength\fR option) and +one of the characters may optionally be underlined using the +\fBunderline\fR option. A radiobutton has +all of the behavior of a simple button: it can display itself in either +of three different ways, according to the \fBstate\fR option; +it can be made to appear +raised, sunken, or flat; it can be made to flash; and it invokes +a Tcl command whenever mouse button 1 is clicked over the +check button. +.PP +In addition, radiobuttons can be \fIselected\fR. +If a radiobutton is selected, the indicator is normally +.VS +drawn with a selected appearance, and +a Tcl variable associated with the radiobutton is set to a particular +value (normally 1). +Under Unix, the indicator is drawn with a sunken relief and a special +color. Under Windows, the indicator is drawn with a round mark inside. +If the radiobutton is not selected, then the indicator is drawn with a +deselected appearance, and the associated variable is +set to a different value (typically 0). +Under Unix, the indicator is drawn with a raised relief and no special +color. Under Windows, the indicator is drawn without a round mark inside. +.VE +Typically, several radiobuttons share a single variable and the +value of the variable indicates which radiobutton is to be selected. +When a radiobutton is selected it sets the value of the variable to +indicate that fact; each radiobutton also monitors the value of +the variable and automatically selects and deselects itself when the +variable's value changes. +By default the variable \fBselectedButton\fR +is used; its contents give the name of the button that is +selected, or the empty string if no button associated with that +variable is selected. +The name of the variable for a radiobutton, +plus the variable to be stored into it, may be modified with options +on the command line or in the option database. +Configuration options may also be used to modify the way the +indicator is displayed (or whether it is displayed at all). +By default a radiobutton is configured to select itself on button clicks. + +.SH "WIDGET COMMAND" +.PP +The \fBradiobutton\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. The following +commands are possible for radiobutton widgets: +.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 \fBradiobutton\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, 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, 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 \fBradiobutton\fR +command. +.TP +\fIpathName \fBdeselect\fR +Deselects the radiobutton and sets the associated variable to an +empty string. +If this radiobutton was not currently selected, the command has +no effect. +.TP +\fIpathName \fBflash\fR +Flashes the radiobutton. This is accomplished by redisplaying the radiobutton +several times, alternating between active and normal colors. At +the end of the flash the radiobutton is left in the same normal/active +state as when the command was invoked. +This command is ignored if the radiobutton's state is \fBdisabled\fR. +.TP +\fIpathName \fBinvoke\fR +Does just what would have happened if the user invoked the radiobutton +with the mouse: selects the button and invokes +its associated Tcl command, if there is one. +The return value is the return value from the Tcl command, or an +empty string if there is no command associated with the radiobutton. +This command is ignored if the radiobutton's state is \fBdisabled\fR. +.TP +\fIpathName \fBselect\fR +Selects the radiobutton and sets the associated variable to the +value corresponding to this widget. + +.SH BINDINGS +.PP +Tk automatically creates class bindings for radiobuttons that give them +the following default behavior: +.VS +.IP [1] +On Unix systems, a radiobutton activates whenever the mouse passes +over it and deactivates whenever the mouse leaves the radiobutton. On +Mac and Windows systems, when mouse button 1 is pressed over a +radiobutton, the button activates whenever the mouse pointer is inside +the button, and deactivates whenever the mouse pointer leaves the +button. +.VE +.IP [2] +When mouse button 1 is pressed over a radiobutton it is invoked (it +becomes selected and the command associated with the button is +invoked, if there is one). +.IP [3] +When a radiobutton has the input focus, the space key causes the radiobutton +to be invoked. +.PP +If the radiobutton's state is \fBdisabled\fR then none of the above +actions occur: the radiobutton is completely non-responsive. +.PP +The behavior of radiobuttons can be changed by defining new bindings for +individual widgets or by redefining the class bindings. + +.SH KEYWORDS +radiobutton, widget |