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<TITLE> Display Items<A NAME=32> </A></TITLE>
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<A NAME=Contents> </A><H2><A NAME=SECTION00052000000000000000> Display Items<A NAME=32> </A></A></H2>
<P>
Before we rush to discuss how to create the items inside a TixTList
widget, let's first spend some time on a very important topic about
the Tix library: the repationship between the display items and
their host widgets.
<P>
We can better define the terms by taking a quick preview of the
TixHList widget, which will be covered in details in the next
chapter. Let's compare the items displayed on the two widgets in
figure 3-3. If we take a close look at the item
that shows the <tt>usr</tt> directory in the TixTList widget on the left
versus the TixHList widget on the right, we can see that this item
appears exactly the same on both widgets.
<P>
If fact, all the items in these two widgets are of the <em>same</em> type:
they all display an image next to a textual name. The only difference
between these two widgets is how these items are arranged. The TixTList
widget arranges the items in rows and columns, while the TixHList widget
arranges the items in a hierachical format.
<P>
With this observation in mind, we can see a separation of tasks
berween the widgets and the items they display. We call the TixHList
and TixTList widgets in figure 3-3 <em>host
widgets</em>: their task is to arrange the items according to their
particular rules. However, they don't really care what these items
display; they just treat the items as rectangle boxes. In contrast,
these items, which are called <em>display items</em> in Tix
terminology, controls the visual information they display, such as
the images, text strings, colors, fonts, etc. However, they don't
really care where on the host widget they will appear.
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<LI> <A NAME=tex2html776 HREF=subsubsection3_5_2_1.html#SECTION00052100000000000000> Advantages of Display Items<A NAME=321> </A></A>
<LI> <A NAME=tex2html777 HREF=subsubsection3_5_2_2.html#SECTION00052200000000000000> Display Items and Display Styles<A NAME=322> </A></A>
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