Brian J. Tarricone wrote:
> On 01/05/2010 01:36 PM, Daniel Yek wrote:
>> I want to receive X's PropertyNotify event for _NET_WORKAREA and
>> _NET_CURRENT_DESKTOP root window properties.
>>
>> How can I enable them? Can they be received as "property-notify-event"
>> signal? Or do I need to use lower level event interface?
>
>
> I usually use gdk_window_add_filter() on the root GdkWindow, after
> gdk_window_set_events().
>
> -brian
Thanks for responding. I saw this email a little late, partly because it
wasn't directly addressing me, so it escaped me a little bit.
So, you showed a solution using a "lower level" event interface.
Here is what I ended up with, which could be quite nice -- higher level
interface -- (if nothing below was a horrible hack that I might still
haven't realized; it sure worked quite well at this moment):
main():
root_window_property_notify_widget = gtk_window_new(GTK_WINDOW_TOPLEVEL);
g_signal_connect( root_window_property_notify_widget,
"property-notify-event",
G_CALLBACK(hx_root_window_property_notify_event_cb),
(gpointer) window_widget);
Top-level window_widget's "map" signal callback function:
GdkWindow *root_gdk_window = gtk_widget_get_root_window( window_widget );
gdk_window_set_user_data(root_gdk_window,
root_window_property_notify_widget);
GTK_OBJECT_FLAGS( GTK_OBJECT(root_window_property_notify_widget) ) |=
GTK_REALIZED | GTK_MAPPED | GTK_VISIBLE;
root_window_property_notify_widget->window = root_gdk_window;
gdk_window_set_events(root_gdk_window, GDK_PROPERTY_CHANGE_MASK);
Thanks!
--
Daniel Yek.
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