Re: gtk_widget_get_toplevel() weirdness.

[Owen Taylor <otaylor redhat com>]

John C Atkeson <jcatkeson@juno.com> writes:

>   
>   I'm getting weird behavior out of gtk_widget_get_toplevel in KDE under
> RH Linux, but no similar problems in gtk-Win32....
>   
>   For example if I retrieve a widget's toplevel window in Linux:  
> 
>   GtkWidget *Top=gtk_widget_get_toplevel(child);
> 
> and then print the top's name:
> 
>   g_print("Top is:%s \n",gtk_widget_get_name(Top));
>   
>   It *always* returns the string "GtkWindow", no matter what the
> toplevel's name really was set to.  In Win32 on the other hand it returns
> the right answer.
>   More importantly though, none of Top's user-data is accessible either;
> it's almost as if Top is a completely different widget from the real top.
>  
> 
>   My theory is that somehow the KDE wm is holding my gtk windows in
> higher-level containers, and gtk_widget_get_toplevel is finding those
> instead.  

Well, without seeing some example code, I can't say what is
going, on, but I can say that this isn't the explanation. ;-)

The windows that kwm uses are completely separate from anything
in the GTK+ widget system. (Not only are the widgets in different
processes, but kwm uses Qt not GTK+.)

gtk_widget_get_toplevel() is not a complicated function:

===============
GtkWidget*
gtk_widget_get_toplevel (GtkWidget *widget)
{
  g_return_val_if_fail (widget != NULL, NULL);
  g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
  
  while (widget->parent)
    widget = widget->parent;
  
  return widget;
}
===============

I'd have to guess there is a logic bug somewhere in your code, since
if the widget that it returns is a GtkWindow, than it will be
your GtkWindow.

Regards,
                                        Owen