Re: changing a combo's popdown strings from select-list callback?

[John Cupitt <john cupitt ng-london org uk>]

Hi Skip, I don't know if this is still true for 1.3, but with gtk 1.2 
you got a core if you removed the item with focus from a popup list. I 
worked around this by doing a gtk_widget_grab_focus() somewhere else 
before doing the delete.

John

Skip Montanaro wrote:

> I can stimulate a segmentation violation if I change the popdown strings of
> a GtkCombo while it is popped up.  This simple Python script is sufficient
> to generate a core file:
>
>     #!/usr/bin/env python
>
>     import gtk
>
>     recursive = 0
>     def fill_new(l, item, combo):
>         global recursive
>         if not recursive:
>             recursive = 1
>             combo.set_popdown_strings(["a","b","c"])
>
>     def main():
>         window = gtk.Window(gtk.WINDOW_TOPLEVEL)
>         window.set_title("Today's Menu - Pick an Entree")
>         window.connect("destroy", gtk.mainquit)
>
>         combo = gtk.Combo()
>         combo.set_popdown_strings(["Spam", "Eggs", "Ham"])
>         combo.entry.set_text("pick an entree")
>         combo.list.connect("select-child", fill_new, combo)
>         window.add(combo)
>
>         window.show_all()
>
>         gtk.mainloop()
>
>     if __name__ == "__main__":
>         main()
>
> How do I work around that?  Presumably, I need to wait until the Combo has
> popped down (and no longer has a pointer grab?) to change its popdown
> strings.
>
> (I'm using the CVS version of Gtk+, but I doubt it matters.)