Re: Questions on Gtk::Notebook

[Murray Cumming <murrayc murrayc com>]

On Tue, 2005-07-19 at 22:55 +0200, Antonio Coralles wrote:
> 
> plain text document attachment (NOTEBOOK.txt)
> After deriving my own Gtk::Notebook class, i experienced the following
> behavour, for which i want to know, if this is on purpose:
> 
> 1.) A Gtk::Notebook seems to emit signal_switch_page with a second parameter 0
>     when realized. Because i wanted to open a different page by default, i had
>     to override on_realize().
> 
> 2.) A Gtk::Notebook emits the same signal a few times, when getting destroyed.
>     This led to following warnings glibmm-warnings:
> 
>     (duty-roaster:20667): glibmm-WARNING **: Glib::create_new_wrapper:
>     Attempted to create a 2nd C++ wrapper for a C instance whose C++ wrapper
>     has been deleted.

If you can make a test case for this, please add it to bugzilla.

> 
>     (duty-roaster:20667): glibmm-WARNING **: failed to wrap type of
>     'gtkmm__GtkFrame'
> 
>     (duty-roaster:20667): gtkmm-CRITICAL **: void
>     <unnamed>::container_foreach_callback(GtkWidget*, void*): assertion
>     `widget != 0' failed
>     _month == 05
> 
>     (duty-roaster:20667): glibmm-WARNING **: Glib::create_new_wrapper:
>     Attempted to create a 2nd C++ wrapper for a C instance whose C++ wrapper
>     has been deleted.
> 
>     (duty-roaster:20667): glibmm-WARNING **: failed to wrap type of
>     'gtkmm__GtkFrame'
> 
>     (duty-roaster:20667): gtkmm-CRITICAL **: void
>     <unnamed>::container_foreach_callback(GtkWidget*, void*): assertion
>     `widget != 0' failed
>     _month == 04
> 
>     ....
> 
>     I removed them, by adding 'bool _destruct' to my class, which is normally
>     false, but set to true in the desructor. If _destrcut == true, i ignore
>     signal_switch_page.
>     
> Thanks, Antonio    
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-- 
Murray Cumming
murrayc murrayc com
www.murrayc.com
www.openismus.com