Under windows, when a VPython display window is minimized (using the window
minimize button) and the un-minimized, when the window re-appears, all
Vpython objects are gone. (no error messages, just no visuals)
First -- is this expected behavior? and what can be done about it. I can
see how VPython may have difficulty updating a minimized window scene --
could smarts be added to freeze updating when the window is minimized? or
alternately could window minimization be trapped so that full minimization
is not allowed.
Bruce Peterson
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