Is "old" Combo broken

[Toralf Lund <toralf procaptura com>]

I'm trying to use some old code using "old" combo widgets, i.e. 
GtkCombo, not GtkComboBox. It doesn't work very well. If I do some sort 
of interaction with the pulldown lists, then close my window, I get the 
message:

GLib-GObject:invalid uninstantiatable type `<invalid>' in cast to `GdkWindow'


Then a segfault. This is with Gtk version 2.12.5 on win32. The problem 
does not occur on Linux Gtk 2.10.4 (I haven't tried any newer versions 
under Linux yet.)

So, is something wrong with the support for old-style combos, or may I 
be using them wrong? That's hard to tell without an example, I know, but 
does anyone know if there has been a change that may have broken the 
support, or if there is some issue with the Windows implementation that 
may explain this?


- Toralf