Use the undo button in your editor to go back to just before the simplification step that made the problem go away then examine the code you were about to remove. The trick is to remove code that is unrelated to the problem until you have distilled the code down to a small sample that demonstrates the issue. Be warned, using this technique you may end up finding the solution yourself.

Would you happen to know the callback for the minimize button and/or system menu? And.or modify?

Would you know how to modify the system menu minimize option?

I can tell you now that I have had more time to experiment... that creating a toplevel from the MainWindow menu bar does minimization correctly. But when I try to create another toplevel from further down in the code, the newer toplevel will not minimize. And then the prior toplevel that did function properly now does not! So, I am affecting something global to toplevel widgets. The toplevels are all created via $mw->new_toplevel, where $mw is the MainWindow. And when the toplevels do not minimize the MainWindow still does.

Thank you for the ideas and thoughts, not to mention your time.

gary

You will have to show some code. In the abscence of which, maybe Urgent query : PERL/Tk will help.

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I'm not really a human, but I play one on earth.
Old Perl Programmer Haiku ................... flash japh

super search, site:perlmonks.org tk bind minimize, site:perlmonks.org tk bind minimize

I can tell you now that I have had more time to experiment... that creating a toplevel from the MainWindow menu bar does minimization correctly....

start whittling until you have a 10-20 line demonstration of the problem

What would prevent a toplevel widget from minimizing?

Code

For example, clicking a button triggers a callback (function).

Clicking minimize button, triggers a callback

The regular callback, changes the size of the window, it actually minimizes the toplevel window

Maybe you override this callback, with your own callback, which does not perform minimization