Initial release
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hlp/en/bwidget/Button.html
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273
hlp/en/bwidget/Button.html
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<HTML>
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<HEAD><TITLE>Button</TITLE></HEAD>
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<BODY BGCOLOR=white>
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<DL><DT><I><A HREF="#descr">NAME</A></I></DT>
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<DD><B>Button</B>
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- Button widget with enhanced options
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</DD></DL>
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<DL>
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<DT><I>CREATION</I></DT>
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<DD><A HREF="#descr"><B>Button</B></A> <I>pathName</I> ?<I>option value...</I>?</DD>
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</DL>
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<DL>
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<DT><I>STANDARD OPTIONS</I></DT>
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<DD><TABLE CELLSPACING=0 CELLSPACING=0 BORDER=0>
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<TR>
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<TD> <A HREF="options.htm#M-activebackground">-activebackground</A></TR>
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<TD> <A HREF="options.htm#M-activeforeground">-activeforeground</A></TR>
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</TR>
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<TR>
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<TD> <A HREF="options.htm#M-anchor">-anchor</A></TR>
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<TD> <A HREF="options.htm#M-background">-background or -bg</A></TD>
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</TR>
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<TR>
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<TD> <A HREF="options.htm#M-bitmap">-bitmap</A></TR>
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<TD> <A HREF="options.htm#M-borderwidth">-borderwidth or -bd</A></TD>
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</TR>
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<TR>
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<TD> <A HREF="options.htm#M-cursor">-cursor</A></TR>
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<TD> <A HREF="options.htm#M-disabledforeground">-disabledforeground</A></TR>
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</TR>
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<TR>
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<TD> <A HREF="options.htm#M-font">-font</A></TR>
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<TD> <A HREF="options.htm#M-foreground">-foreground or -fg</A></TD>
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</TR>
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<TR>
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<TD> <A HREF="options.htm#M-highlightbackground">-highlightbackground</A></TR>
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<TD> <A HREF="options.htm#M-highlightcolor">-highlightcolor</A></TR>
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</TR>
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<TR>
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<TD> <A HREF="options.htm#M-highlightthickness">-highlightthickness</A></TR>
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<TD> <A HREF="options.htm#M-image">-image</A></TR>
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</TR>
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<TR>
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<TD> <A HREF="options.htm#M-justify">-justify</A></TR>
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<TD> <A HREF="options.htm#M-padx">-padx</A></TR>
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</TR>
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<TR>
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<TD> <A HREF="options.htm#M-pady">-pady</A></TR>
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<TD> <A HREF="options.htm#M-repeatdelay">-repeatdelay</A></TR>
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</TR>
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<TR>
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<TD> <A HREF="options.htm#M-repeatinterval">-repeatinterval</A></TR>
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<TD> <A HREF="options.htm#M-takefocus">-takefocus</A></TR>
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</TR>
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<TR>
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<TD> <A HREF="options.htm#M-text">-text</A></TR>
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<TD> <A HREF="options.htm#M-textvariable">-textvariable</A></TR>
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</TR>
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<TR>
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<TD> <A HREF="options.htm#M-wraplength">-wraplength</A></TR>
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</TABLE></DD>
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</DL>
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<DL>
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<DT><I><A HREF="#wso">WIDGET-SPECIFIC OPTIONS</A></I></DT>
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<DD><TABLE CELLSPACING=0 CELLSPACING=0 BORDER=0>
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<TR>
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<TD> <A HREF="#-armcommand">-armcommand</A></TR>
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<TD> <A HREF="#-command">-command</A></TR>
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</TR>
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<TR>
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<TD> <A HREF="#-default">-default</A></TR>
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<TD> <A HREF="#-disarmcommand">-disarmcommand</A></TR>
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</TR>
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<TR>
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<TD> <A HREF="#-height">-height</A></TR>
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<TD> <A HREF="#-helptext">-helptext</A></TR>
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</TR>
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<TR>
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<TD> <A HREF="#-helptype">-helptype</A></TR>
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<TD> <A HREF="#-helpvar">-helpvar</A></TR>
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</TR>
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<TR>
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<TD> <A HREF="#-name">-name</A></TR>
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<TD> <A HREF="#-relief">-relief</A></TR>
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</TR>
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<TR>
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<TD> <A HREF="#-state">-state</A></TR>
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<TD> <A HREF="#-underline">-underline</A></TR>
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</TR>
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<TR>
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<TD> <A HREF="#-width">-width</A></TR>
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</TABLE></DD>
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</DL>
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<DL>
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<DT><I><A HREF="#wc">WIDGET COMMAND</A></I></DT>
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<DD><I>pathName</I> <A HREF="#cget"><B>cget</B></A>
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<I>option</I>
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</DD>
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<DD><I>pathName</I> <A HREF="#configure"><B>configure</B></A>
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?<I>option</I>? ?<I>value</I> <I>option</I> <I>value</I> ...?
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</DD>
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<DD><I>pathName</I> <A HREF="#invoke"><B>invoke</B></A>
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</DD>
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</DL>
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<BR><HR WIDTH="100%"><BR>
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<B><A NAME="descr"></A>DESCRIPTION</B><BR>
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<P>
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Button widget extends the Tk button with new options.
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<A HREF="DynamicHelp.html">DynamicHelp</A> options,
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a new relief style, callback for <B>arm</B>/<B>disarm</B>, and
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<B>repeatdelay</B>/<B>repeatinterval</B> options has been added.
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</P>
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<BR><HR WIDTH="50%"><BR>
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<B><A NAME="wso">WIDGET-SPECIFIC OPTIONS</A></B><BR>
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<DL><DT><A NAME="-armcommand"><B>-armcommand</B></A></DT>
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<DD>
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Specifies a Tcl command to associate with the Button when mouse button 1 is pressed over the
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Button. When <B>repeatdelay</B> or <B>repeatinterval</B> option is positive integer,
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this command is repeatedly called if mouse pointer is over the Button and until mouse
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button 1 is released.
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</DD>
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</DL>
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<DL><DT><A NAME="-command"><B>-command</B></A></DT>
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<DD>
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Specifies a Tcl command to associate with the Button. This command
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is typically invoked when mouse button 1 is released over the Button
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window.
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</DD>
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</DL>
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<DL><DT><A NAME="-default"><B>-default</B></A></DT>
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<DD>
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Specifies one of three states for the default ring: <B>normal</B>, <B>active</B>,
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or <B>disabled</B>. In active state, the button is drawn with the platform specific
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appearance for a default button. In normal state, the button is drawn with the platform
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specific appearance for a non-default button, leaving enough space to draw the default
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button appearance. The normal and active states will result in buttons of the same size.
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In disabled state, the button is drawn with the non-default button appearance without
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leaving space for the default appearance. The disabled state may result
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in a smaller button than the active state.
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</DD>
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</DL>
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<DL><DT><A NAME="-disarmcommand"><B>-disarmcommand</B></A></DT>
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<DD>
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Specifies a Tcl command to associate with the Button when mouse button 1 is released.
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This command is called even if pointer is not over the Button, and always before
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the command specified by <B>command</B> option.
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It is typically used in conjuntion with <B>armcommand</B>, <B>repeatdelay</B> and
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<B>repeatinterval</B>.
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</DD>
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</DL>
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<DL><DT><A NAME="-height"><B>-height</B></A></DT>
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<DD>
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Specifies a desired height for the Button.
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If an image or bitmap is being displayed in the Button then the value is in
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screen units;
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for text it is in lines of text.
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If this option isn't specified, the Button's desired height is computed
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from the size of the image or bitmap or text being displayed in it.
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</DD>
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</DL>
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<DL><DT><A NAME="-helptext"><B>-helptext</B></A></DT>
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<DD>
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Text for dynamic help. If empty, no help is available for this widget.
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See also <A HREF="DynamicHelp.html">DynamicHelp</A>.
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</DD>
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</DL>
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<DL><DT><A NAME="-helptype"><B>-helptype</B></A></DT>
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<DD>
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Type of dynamic help. Use <I>balloon</I> or <I>variable</I>.
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See also <A HREF="DynamicHelp.html">DynamicHelp</A>.
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</DD>
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</DL>
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<DL><DT><A NAME="-helpvar"><B>-helpvar</B></A></DT>
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<DD>
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Variable to use when <B>helptype</B> option is <I>variable</I>.
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See also <A HREF="DynamicHelp.html">DynamicHelp</A>.
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</DD>
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</DL>
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<DL><DT><A NAME="-name"><B>-name</B></A></DT>
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<DD>
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Specifies a standard name for the button. If the option <B>*<I>name</I>Name</B> is
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found in the resources database, then <B>text</B> and <B>underline</B> options
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are extracted from its value.
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</DD>
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</DL>
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<DL><DT><A NAME="-relief"><B>-relief</B></A></DT>
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<DD>
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Specifies the 3-D effect desired for the widget. Acceptable values are standard values for
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button relief (<B>raised</B>, <B>sunken</B>, <B>flat</B>, <B>ridge</B>, <B>solid</B>, and <B>groove</B>) and <B>link</B>, which specifies that button relief is <B>flat</B> when pointer
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is outside the button and <B>raised</B> when pointer is inside.
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</DD>
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</DL>
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<DL><DT><A NAME="-state"><B>-state</B></A></DT>
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<DD>
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Specifies one of three states for the Button: <B>normal</B>, <B>active</B>,
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or <B>disabled</B>. In normal state the Button is displayed using the
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<B>foreground</B> and <B>background</B> options. The active state is
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typically used when the pointer is over the Button. In active state
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the Button is displayed using the <B>activeforeground</B> and
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<B>activebackground</B> options. Disabled state means that the Button
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should be insensitive: the default bindings will refuse to activate
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the widget and will ignore mouse button presses.
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In this state the <B>disabledforeground</B> and
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<B>background</B> options determine how the Button is displayed.
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</DD>
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</DL>
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<DL><DT><A NAME="-underline"><B>-underline</B></A></DT>
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<DD>
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Specifies the integer index of a character to underline in the label of the button.
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0 corresponds to the first character of the text displayed, 1 to the next character,
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and so on.
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<BR>The binding <B><Alt-<I>char</I>></B> is automatically set on the toplevel
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of the Button to call Button::<B>setfocus</B>.
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</DD>
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</DL>
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<DL><DT><A NAME="-width"><B>-width</B></A></DT>
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<DD>
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If an image or bitmap is being displayed in the Button then the value is in
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screen units;
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for text it is in characters.
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If this option isn't specified, the Button's desired width is computed
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from the size of the image or bitmap or text being displayed in it.
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</DD>
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</DL>
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<HR WIDTH="50%"><BR>
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<B><A NAME="wc">WIDGET COMMAND</A></B><BR>
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<DL><DT><A NAME="cget"><I>pathName</I> <B>cget</B></A>
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<I>option</I>
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</DT><DD>
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Returns the current value of the configuration option given by <I>option</I>.
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<I>Option</I> may have any of the values accepted by the creation command.
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</DD></DL>
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<DL><DT><A NAME="configure"><I>pathName</I> <B>configure</B></A>
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?<I>option</I>? ?<I>value</I> <I>option</I> <I>value</I> ...?
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</DT><DD>
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Query or modify the configuration options of the widget. If no <I>option</I> is specified,
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returns a list describing all of the available options for <I>pathName</I>.
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If <I>option</I> is specified with no <I>value</I>, then the command returns a list
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describing the one named <I>option</I> (this list will be identical to the corresponding
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sublist of the value returned if no <I>option</I> is specified). If one or
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more <I>option-value</I> pairs are specified, then the command modifies the given widget
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option(s) to have the given value(s); in this case the command returns an empty string.
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<I>Option</I> may have any of the values accepted by the creation command.
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Read-only options are not be modified.
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</DD></DL>
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<DL><DT><A NAME="invoke"><I>pathName</I> <B>invoke</B></A>
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</DT><DD>
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If Button <B>state</B> is not disabled, this invoke the commands of the Button.
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Button is redisplayed with active color and sunken relief, and
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<B>armcommand</B> is called. Then Button is redisplayed with
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normal color and its defined relief, and <B>disarmcommand</B> then <B>command</B>
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are called.
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<P><B>invoke</B> is called when Button has input focus and user press the space bar.
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</DD></DL>
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</BODY></HTML>
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