332 lines
11 KiB
HTML
332 lines
11 KiB
HTML
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<HTML>
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<HEAD><TITLE>Label</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>Label</B>
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- Label widget with <B>state</B> option, dynamic help and drag and drop facilities
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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>Label</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-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-relief">-relief</A></TR>
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</TR>
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<TR>
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<TD> <A HREF="options.htm#M-takefocus">-takefocus</A></TR>
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<TD> <A HREF="options.htm#M-text">-text</A></TR>
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</TR>
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<TR>
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<TD> <A HREF="options.htm#M-textvariable">-textvariable</A></TR>
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<TD> <A HREF="options.htm#M-wraplength">-wraplength</A></TR>
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</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="#-dragenabled">-dragenabled</A></TR>
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<TD> <A HREF="#-dragendcmd">-dragendcmd</A></TR>
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</TR>
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<TR>
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<TD> <A HREF="#-dragevent">-dragevent</A></TR>
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<TD> <A HREF="#-draginitcmd">-draginitcmd</A></TR>
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</TR>
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<TR>
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<TD> <A HREF="#-dragtype">-dragtype</A></TR>
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<TD> <A HREF="#-dropcmd">-dropcmd</A></TR>
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</TR>
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<TR>
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<TD> <A HREF="#-dropenabled">-dropenabled</A></TR>
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<TD> <A HREF="#-dropovercmd">-dropovercmd</A></TR>
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</TR>
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<TR>
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<TD> <A HREF="#-droptypes">-droptypes</A></TR>
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<TD> <A HREF="#-focus">-focus</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="#-state">-state</A></TR>
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</TR>
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<TR>
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<TD> <A HREF="#-underline">-underline</A></TR>
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<TD> <A HREF="#-width">-width</A></TR>
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</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="#setfocus"><B>setfocus</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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The <B>Label</B> widget extends the default Tk label. Options have been added to provide
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visual effect depending on the state of the Label, <A HREF="DynamicHelp.html">DynamicHelp</A> options, and <A HREF="DragSite.html">Drag
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</A> and <A HREF="DropSite.html">Drop</A>.
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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="-dragenabled"><B>-dragenabled</B></A></DT>
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<DD>
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A boolean specifying if drag is enabled.
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</DD>
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</DL>
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<DL><DT><A NAME="-dragendcmd"><B>-dragendcmd</B></A></DT>
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<DD>
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Specifies a command to be called when drag ended.
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<B>dragendcmd</B> must be a command conforming to the description of the
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option <B>dragendcmd</B> of <B>DragSite::<A HREF="DragSite.html#register">register</A></B>.
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</DD>
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</DL>
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<DL><DT><A NAME="-dragevent"><B>-dragevent</B></A></DT>
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<DD>
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Specifies the number of the mouse button associated to the drag.
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Must be <B>1</B>, <B>2</B> or <B>3</B>.
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</DD>
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</DL>
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<DL><DT><A NAME="-draginitcmd"><B>-draginitcmd</B></A></DT>
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<DD>
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Specifies a command to be called when <B>dragevent</B> occurs on widget.
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<B>draginitcmd</B> must be a command conforming to the description of the
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option <B>draginitcmd</B> of <B>DragSite::<A HREF="DragSite.html#register">register</A></B>.
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<BR>If <B>draginitcmd</B> is empty, the internal <B>draginitcmd</B> command is used instead
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and returns:
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<DL><DD><TABLE BORDER=0 CELLSPACING=1>
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<TR><TD valign=top><I>IMAGE {copy} <image name></I>
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<TD>if an image is displayed.
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<TR><TD valign=top><I>BITMAP {copy} <bitmap name></I>
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<TD>if a bitmap is displayed.
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<TR><TD valign=top><I>TEXT {copy} <text></I>
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<TD>if a text is displayed.
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</TABLE></DL>
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Note that if <B>dragtype</B> option is not empty, its value is used instead of those above.
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</DD>
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</DL>
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<DL><DT><A NAME="-dragtype"><B>-dragtype</B></A></DT>
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<DD>
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Specifies an alternate type of dragged object.
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</DD>
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</DL>
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<DL><DT><A NAME="-dropcmd"><B>-dropcmd</B></A></DT>
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<DD>
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Specifies a command to be called when drop occurs on the widget.
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<B>dropcmd</B> must be a command conforming to the description of the
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option <B>dropcmd</B> of <B>DropSite::<A HREF="DropSite.html#register">register</A></B>.
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<BR>If <B>dropcmd</B> is empty, the command updates the label following the type of the data:
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<DL><DD><TABLE BORDER=0 CELLSPACING=1>
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<TR><TD><I>COLOR</I> or <I>FGCOLOR</I></TD>
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<TD>reconfigure the <B>foreground</B> of the Label.</TD>
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<TR><TD><I>BGCOLOR</I></TD>
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<TD>reconfigure the <B>background</B> of the Label.</TD>
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<TR><TD><I>IMAGE</I></TD>
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<TD>reconfigure the Label to display the associated image.</TD>
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<TR><TD><I>BITMAP</I></TD>
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<TD>reconfigure the Label to display the associated bitmap.
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<B>image</B> option is set to empty.</TD>
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<TR><TD><I>TEXT</I>,<BR>or any other tag</TD>
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<TD>reconfigure the Label to display the associated string.
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<B>image</B> and <B>bitmap</B> options are set to empty.</TD>
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</TABLE></DL>
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and returns 1.
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</DD>
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</DL>
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<DL><DT><A NAME="-dropenabled"><B>-dropenabled</B></A></DT>
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<DD>
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A boolean specifying if drop is enabled.
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</DD>
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</DL>
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<DL><DT><A NAME="-dropovercmd"><B>-dropovercmd</B></A></DT>
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<DD>
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Specifies a command to be called when drag icon is over the widget.
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<B>dropovercmd</B> must be a command conforming to the description of the
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option <B>dropovercmd</B> of <B>DropSite::<A HREF="DropSite.html#register">register</A></B>.
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<BR>If <B>dropovercmd</B> is empty, Label always accepts the drop if data type is
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<I>FGCOLOR</I>, <I>COLOR</I>, <I>BGCOLOR</I>, and accepts all other data type only if
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<B>state</B> is normal.
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</DD>
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</DL>
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<DL><DT><A NAME="-droptypes"><B>-droptypes</B></A></DT>
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<DD>
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Specifies a list of accepted dropped object/operation.
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See option <B>droptypes</B> of
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<B>DropSite::<A HREF="DropSite.html#register">register</A></B>.
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for more infromation.
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Default accepts <I>FGCOLOR</I>, <I>COLOR</I>, <I>BGCOLOR</I>, <I>TEXT</I>, <I>BITMAP</I>
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and <I>IMAGE</I>, all with <B>copy</B> and <B>move</B> operations.
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</DD>
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</DL>
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<DL><DT><A NAME="-focus"><B>-focus</B></A></DT>
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<DD>
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Specifies a pathname to set the focus on for Label::<B>setfocus</B> command.
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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 label.
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If an image or bitmap is being displayed in the label then the value is in
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screen units, for text it is in lines of text.
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If this option isn't specified, the label'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 label. If the option <B>*<I>name</I>Name</B> is
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found in the resource 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="-state"><B>-state</B></A></DT>
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<DD>
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Specifies one of two states for the Label: <B>normal</B> or <B>disabled</B>.
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In normal state the text of the Label is displayed using the <B>foreground</B> option.
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In disabled state the text of the Label is displayed using the <B>disabledforeground</B> option.
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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.
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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 Label to call Label::<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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Specifies a desired width for the label.
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If an image or bitmap is being displayed in the label then the value is in
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screen units, for text it is in characters.
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If this option isn't specified, the label'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.
|
||
|
|
<I>Option</I> may have any of the values accepted by the creation command.
|
||
|
|
Read-only options are not be modified.
|
||
|
|
|
||
|
|
</DD></DL>
|
||
|
|
<DL><DT><A NAME="setfocus"><I>pathName</I> <B>setfocus</B></A>
|
||
|
|
</DT><DD>
|
||
|
|
|
||
|
|
Set the focus on the pathname given by <B>-focus</B> option if <B>-state</B> is <I>normal</I>.
|
||
|
|
|
||
|
|
</DD></DL>
|
||
|
|
</BODY></HTML>
|