35 lines
2.0 KiB
HTML
35 lines
2.0 KiB
HTML
<HEAD>
|
|
<TITLE> Widget Class Declaration<A NAME=62> </A></TITLE>
|
|
</HEAD>
|
|
<BODY BGCOLOR="#ffffff" TEXT="#000000" LINK="#0000ff" VLINK="#000080">
|
|
<FONT FACE="Tahoma, Arial, Helvetica">
|
|
<HR> <A NAME=tex2html1165 HREF=subsubsection3_8_2_1.html><IMG ALIGN=MIDDLE SRC="../gif/icons/next_motif.gif"></A> <A NAME=tex2html1163 HREF=section3_8.html><IMG ALIGN=MIDDLE SRC="../gif/icons/up_motif.gif"></A> <A NAME=tex2html1157 HREF=subsubsectionstar3_8_1_5.html><IMG ALIGN=MIDDLE SRC="../gif/icons/previous_motif.gif"></A> <A NAME=tex2html1167 HREF=tableofcontents3_1.html><IMG ALIGN=MIDDLE SRC="../gif/icons/contents_motif.gif"></A> <BR>
|
|
<B> Next:</B> <A NAME=tex2html1166 HREF=subsubsection3_8_2_1.html> Using the tixWidgetClass </A>
|
|
<B>Up:</B> <A NAME=tex2html1164 HREF=section3_8.html> Tix Object Oriented </A>
|
|
<B> Previous:</B> <A NAME=tex2html1158 HREF=subsubsectionstar3_8_1_5.html> Component Widgets</A>
|
|
<HR> <P>
|
|
<A NAME=Contents> </A><H2><A NAME=SECTION00082000000000000000> Widget Class Declaration<A NAME=62> </A></A></H2>
|
|
<P>
|
|
The first step of writing a new widget class is to decide the base
|
|
class from which the new class. Usually, if the new class does not
|
|
share any common features with other classes, it should be derived
|
|
from the TixPrimitive class. If it does share common features with
|
|
other classes, then it should be derived from the appropriate base
|
|
class. For example, if the new class support scrollbars, it should
|
|
be derived from TixScrolledWidget; if it displays a label next to
|
|
its ``main area'', then it should be derived from TixLabelWidget.
|
|
<P>In the case of our new TixArrowButton class, it doesn't really share
|
|
any common features with other classes, so we decide to use the base
|
|
class TixPrimitive as its superclass.
|
|
<P>
|
|
<HR>
|
|
<UL>
|
|
<LI> <A NAME=tex2html1168 HREF=subsubsection3_8_2_1.html#SECTION00082100000000000000> Using the tixWidgetClass Command<A NAME=621> </A></A>
|
|
</UL>
|
|
<HR>
|
|
|
|
</FONT>
|
|
</BODY>
|
|
<P><ADDRESS>
|
|
<A HREF=http://tix.sourceforge.net>http://tix.sourceforge.net</A><BR>
|
|
</ADDRESS> |