Adds a filter to be called when X ClientMessage events are received. See gdk_window_add_filter() if you are interested in filtering other types of events. Since 2.2
the type of ClientMessage events to receive. This will be checked against the message_type field of the XClientMessage event struct.
the function to call to process the event.
user data to pass to func.
See Implementation
Adds a filter to be called when X ClientMessage events are received. See gdk_window_add_filter() if you are interested in filtering other types of events. Since 2.2