pq14223 - Paint problems with widgets in group box/ combo box 
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Affected Platforms:

 Windows95, NT

Affected Features:

 Base Smalltalk

Prerequisites:

 V4.02b


Symptom:

Under Windows ONLY, when you add an xmNmodifyVerifyCallback
to a comboBox, the behavior changes. Events do not seem to be
getting signaled. (#selectedItem, #selectedItemChanged, etc)

When using the Combo Box normally before adding the callback,
everything is fine, but when you install a modify/verify callback it
changes the way the widget works.  In the customer's case, they
are connecting the selectedItem of the comboBox to another separate
text field.  With the modify/verify callback installed, during 
the selection of an item in the Combo Box using the the up & down
arrows, the item being selected is not being displayed for selection in        
the other text field.  With the mouse it is OK; the problem         
only occurs with keyboard arrow keys.
 

Solution:

 Open a Workspace on file pq14233.st and filein the patch.

Note: This is fixed in v4.5