 
 subsubsection3_5_2_1.html  section3_5.html  subsection3_5_1.html  tableofcontents3_1.html   Next: subsubsection3_5_2_1.html Advantages of Display Up: section3_5.html Tabular Listbox and  Previous: subsection3_5_1.html tixTList - The    Display Items  
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.
   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 
usr 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.
   If fact, all the items in these two widgets are of the 
same 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.
   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 
host
  widgets
: 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 
display items 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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