I have tried that but I think that it does not give 'exact' results. I can read its desription
in Mastering Perl/Tk in such a way that this confirms my thought.
Therefore I was hoping that there would something like
->gridInfo (for widgets packed with grid) which would give the the data I am looking for (or even something like ->cget).
I did try ->windowInfo but that gave an error.
Am I seeking for something that does not exist?