Immediately an example to explain my question:

$mw = MainWindow->new();
$mw->Button(-text=>"A", -command=>\&start)->pack();

MainLoop;

sub start {
    $tl=$mw->Toplevel();
    $tl->Button(-text=>"B", -command=>sub{destroy
                                 $tl})->pack();
}

[download]
When starting the toplevelwindow, I want to deactivate the mainwindow. Meaning: put toplevelwindow on top and avoid that any action can be done on the mainwindow. I know it can be done with a withdraw and deiconify but I don't want that the mainwindow totally disappears; I just want to 'deactivate' it. In fact, I want the same behaviour as 'getOpenFile'.
This seems to be a common used something; though I could not find any info in the Monks' infodatabase.
So any help is welcome.
Thx in advance

In reply to Deactivate MainWindow when starting Toplevel by yike

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