Hello Loops,
Thanks a lot for your swift response and insight. I also read through another response from AM. Just to make sure I understand this correctly,- A parent/child hierarchy is established at the creation phase of objects. For ex:
my $t_button = $mw->Button(-text=>'OK',
-command=>sub{exit});
This makes the object pointed to by $t_button a child of the object pointed to by $mw.
- A master/slave hierarchy is established by the geometry manager used(such as grid, pack, form, place).
- When displaying a widget, if the -in option is not at all used then the master/slave hierarchy is exactly the same as parent/child hierarchy.
If this understanding of mine is correct, then I proceed to a portion of your next statement:-
....trying to repack a button with first tab parent into a second tab, changes the geometry...
This, I believe, you meant that the pack geometry manager attempts to pack first tab inside the second tab of the same NoteBook. This of-course is not permitted, after all every tab of any given NoteBook must NOT ONLY be a direct child BUT ALSO a direct slave under that NoteBook
-
...but not the parent/child relationship -- meaning the stacking wouldn't work.
This I didn't understand, honestly. So please let me know.
Moving on...Yes, after you said that making button a child of main window, I tried it and it works. But if I change the button to be a child of NoteBook i.e.
my $t_button = $nb->Button(-text=>'OK',
-command=>sub{exit});
Then not only does the button not show up, I don't get any error from the execution of pack statement inside the callbacks either when the callbacks are executed. What's going on ? Can you please tell me what's the problem here?
Hey, Thank you for your patience in reading my query.
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Hello Loops,
I just chanced to see some details on this.
-
http://stackoverflow.com/questions/18106377/cant-pack-a-widget-inside-a-sibling-toplevel
the first para of response from Donal Fellows and the last response dated Aug 7 '13 at 17:37 from Elchonon Edelson.
- http://stackoverflow.com/questions/21467113/is-there-a-limit-on-the-length-or-nesting-of-tcl-tk-widget-pathnames/21468948#21468948
the response dated Jan 30 at 22:39 from Donal Fellows.
Those being the responses about pure Tcl/Tk I didn't quite understand what they said. Do you have any explanation/thoughts from your side ?
Thank you
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