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Import Tix 8.4.3.5 (as of svn r86089)

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Zachary Ware
2017-05-22 16:16:49 -05:00
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<HEAD>
<TITLE> Widget Classes and Widget Instances<A NAME=611>&nbsp;</A></TITLE>
</HEAD>
<BODY BGCOLOR="#ffffff" TEXT="#000000" LINK="#0000ff" VLINK="#000080">
<FONT FACE="Tahoma, Arial, Helvetica">
<HR> <A NAME=tex2html1112 HREF=subsubsection3_8_1_2.html><IMG ALIGN=MIDDLE SRC="../gif/icons/next_motif.gif"></A> <A NAME=tex2html1110 HREF=subsection3_8_1.html><IMG ALIGN=MIDDLE SRC="../gif/icons/up_motif.gif"></A> <A NAME=tex2html1104 HREF=subsection3_8_1.html><IMG ALIGN=MIDDLE SRC="../gif/icons/previous_motif.gif"></A> <A NAME=tex2html1114 HREF=tableofcontents3_1.html><IMG ALIGN=MIDDLE SRC="../gif/icons/contents_motif.gif"></A> <BR>
<B> Next:</B> <A NAME=tex2html1113 HREF=subsubsection3_8_1_2.html> What is in </A>
<B>Up:</B> <A NAME=tex2html1111 HREF=subsection3_8_1.html> Introduction to Tix </A>
<B> Previous:</B> <A NAME=tex2html1105 HREF=subsection3_8_1.html> Introduction to Tix </A>
<HR> <P>
<A NAME=Contents>&nbsp;</A><H3><A NAME=SECTION00081100000000000000> Widget Classes and Widget Instances<A NAME=611>&nbsp;</A></A></H3>
<P>
All the mega-widget classes in Tix, such as TixComboBox and
TixControl, are implemented in the Tix Intrinsics framework. Also,
you can write new <em>widget classes</em> with the Tix Intrinsics. In
the next section, I'll go through all the steps of creating a new
widget class in Tix. I'll illustrate the idea using a new class
``TixArrowButton'' as an example. TixArrowButton is essentially a
button that can display an arrow in one of the for directions
(see figure 6-1).
<P>
<blockquote> <P><CENTER><IMG SRC="../gif/tix/oop/arrows.gif">
</CENTER>
</blockquote>
<P>
Once you have defined your classes, you can create <em>widget
instances</em> of these classes. For example, the following code will
create four instances of your new TixArrowButton class:
<P>
<blockquote> <P><tt> tixArrowButton .up -direction n<BR>
tixArrowButton .left -direction e<BR>
tixArrowButton .right -direction w<BR>
tixArrowButton .down -direction s
</tt>
<P></blockquote>
<P>
<HR>
</FONT>
</BODY>
<P><ADDRESS>
<A HREF=http://tix.sourceforge.net>http://tix.sourceforge.net</A><BR>
</ADDRESS>