I realize it's bad form for me to ask a question in response to a question, so please forgive me, but... what benefit do you hope to get by embedding a non-Tk GUI (which you create) inside a widget of a Perl-Tk program?

Is your non-Tk GUI set up so it can also work by itself (not inside a Tk widget)? If so, and you are looking for a way to make its output accessible to an "outer" Perl-Tk GUI, why not run the "inner" GUI as a pipeline file handle 

open(MYGUI,"inner-gui |");
then setup a 
Tk::Event->fileevent
for that file handle? This would seem to keep everything simpler, and might perform better -- both GUI's do their normal thing, both are handled by the main window manager.

If do have a compelling reason for the "embedded GUI apps" approach, I'd be very interested to learn more about that sort of situation.

In reply to Re: How to embed other GUI into Tk application by graff
in thread How to embed other GUI into Tk application by svad

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