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On 01/15/10 16:51, Tristan Schmelcher wrote:
> Hello,
>
> I'm a novice Gtk app developer writing a plugin for Firefox and I'm
> having trouble getting the callbacks that I need from Gtk/Gdk. The way
> the plugin architecture works is that Firefox creates a GtkSocket and
> my plugin gets passed its XID and creates the corresponding GtkPlug
> (in the same process). By and large everything works, except at
> shutdown. In some cases, Firefox happens to do a gdk_window_destroy()
> on one of the parent windows of the GtkSocket before unloading my
> plugin (for example, when closing a tab with the 'X'). That
> recursively destroys everything down to the GtkSocket and also the
> GtkPlug in _gdk_window_destroy_hierarchy(
> ). So when I try to access the underlying X11 Window handle after this
> I get an error from the X server and the program aborts. :(
>
> What I'd like to do is receive a signal from Gtk/Gdk when the
> GdkWindow inside my GtkPlug is destroyed like this so that I can
> cancel any further rendering actions. But I can't figure out how to
> receive a signal when this happens! AFAICT none of the GtkPlug signals
> or its inherited GtkWidget signals are dispatched when this happens.
>
> Any ideas?
Tristan,
I've had this same problem when developing
gecko-mediaplayer/gnome-mplayer and mplayerplug-in. I was never able to
fully use the GtkPlug interface. It just didn't work the way I needed it
to.
What I ended up doing is creating a normal toplevel window and then
embedding it in the window that firefox gave me..
Something like this where windowid is the xid I get from firefox.
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
if (windowid > 0 && embedding_disabled == FALSE) {
gtk_window_set_decorated(GTK_WINDOW(window), FALSE);
GTK_WIDGET_SET_FLAGS(window, GTK_CAN_FOCUS);
}
if (windowid != 0 && embedding_disabled == FALSE) {
while (gtk_events_pending())
gtk_main_iteration();
window_container = gdk_window_foreign_new(windowid);
if (GTK_WIDGET_MAPPED(window))
gtk_widget_unmap(window);
gdk_window_reparent(window->window, window_container, 0, 0);
}
Hope that helps.
Kevin
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