Class TListBox      Inherits from TControl
--------------------------------------------------------------------------------

 DATA
--------------------------------------------------------------------------------
 aItems          Array of Items of the List Box
 bSetGet         CodeBlock to associate TlistBox object to a Clipper Var.
 bChanged        CodeBlock that is evaluated when the object changes.
 lOwnerDraw      If the Object Draws itself.
 nBmpSize        Heihgt of bitmaps if ListBox is OwnerDraw
 cFileSpec       FileSpec to load bitmaps.


 METHODS
--------------------------------------------------------------------------------
 New             Constructor from source code
 ReDefine        Constructor for resources
 cToChar         Generates a data template to build a Dialog
 Init            Generical initialization
 Add             Add a Item to the list.
 Modify          Modify the text of an Item.
 Insert          Insert a Item.
 Del             Deletes any Item.
 GetItem         Retrieves the text of any item.
 Len             Retrieves the lenght of the list.
 Reset           Empties the list.
 Change          Changed event handler.
 FillMeasure     FillMeasure event handler.
 DrawItem        DrawItem event handler.
 GetPos          Retrieves the index of the currently selected item.