Re: PERL / Tk MainWindow -> new and destroy(), vs. $mw-> withdraw() and raise().


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Re: PERL / Tk MainWindow -> new and destroy(), vs. $mw-> withdraw() and raise().

by jcb (Parson)

on Apr 13, 2020 at 02:38 UTC ( [id://11115411]=note: print w/replies, xml )

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in reply to PERL / Tk MainWindow -> new and destroy(), vs. $mw-> withdraw() and raise().

The Tk MainLoop returns when all MainWindows are destroyed. If you want to be able to merely withdraw the MainWindow, you will need to move the effects of lines 27 and 28 into Tk callback handlers. The program is hanging when the MainWindow is withdrawn because it reaches a state where no GUI elements are present, but Tk is still waiting for events — deadlock!

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Re^2: PERL / Tk MainWindow -> new and destroy(), vs. $mw-> withdraw() and raise(). by Anonymous Monk on Apr 13, 2020 at 13:53 UTC
As you suggested I moved those subroutine calls to the end of my keyPressMainGUI handler and now everything works fine. Thanks so much!	[reply]

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