You start a Tk::Dialog before you enter MainLoop with $dialog_setup->Show().

Show() has two modes: local grab and global grab. Without arguments, as you've used, the mode is local grab.

With a local grab, the widget which is the parent of the Dialog ($mw in this case) is effectively frozen - you need to close the Dialog widget before you can perform any operations on the parent. It's normal to start a Dialog after you enter the MainLoop (e.g. Menu-Help-About typically shows "About" information in a Dialog or similar widget).

In a couple of my tests (on Windows XP and Cygwin), the Dialog was minimised and the "frozen" main window was displayed - I suspect this might have been the behaviour you were seeing. I haven't seen that before but I've always started Dialogs after the MainLoop has been entered. Take a look at the widget demo (Common Dialogs - Message boxes) on your system to check how it "normally" operates.

-- Ken

In reply to Re^3: tk close window by kcott
in thread tk close window by fanticla

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