Popup loses mouse capture when application covered

[Jeffrey Barish]

My application opens a window with a message on an error condition.  The
window captures the mouse so that users cannot use the application until
the error condition has been corrected.  I just discovered that when some
other application covers mine, the popup window loses capture.  I see this
behavior on Windows XP with Python 2.4.3 and wxPython 2.6.3.2.  I believe
that this behavior is new.
-- 
Jeffrey Barish