I have created a descendant of Tk::Toplevel which is a self-contained mini-application which I groked from a single-shot .pl script. However, try as I might, I simply cannot make this happen. My code looks sorta like this: 
use Tk;
use lib ...
use App::Composite;

[download]
in App::Composite: 

...
use base qw/Tk::Toplevel/;

Construct Tk::Widget 'Composite'
... implementation ...

[download]
and in test.pl 
$mw = new MainWindow;
$comp = $mw->Composite;
$comp->resizable(0, 0);
$comp->raise($mw);

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It raises, but doesn't focus! Playing with $comp->focusmode and $comp->configure(-takefocus) aren't what I want! How come this isn't easy?!

In reply to Window Focus in Tk by bjr

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