gdk_window_set_decorations doesn't work

[Christian Biesinger <cbiesinger web de>]

Hello!
I've got a problem with gdk_window_set_decorations.
The problem is:
I'm calling it like this:
  GdkWindow *wnd = gtk_widget_get_toplevel(my_widget)->window;
  gdk_window_set_decorations(wnd, 0);

However, it doesn't work - the decorations don't change. It only works if
I set the decorations before the window is shown, but this is unusable for
me.
Hiding the window, setting the decorations and then showing it again
doesn't either.


Does anybody have any ideas how to make it work?

Thanks,
Christian 

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