[Gtk-sharp-list] Returning Gdk.Events

[Paolo Molaro]

On 03/11/03 Jonathan Pryor wrote:
> 		public static Gdk.Event CurrrentEvent {
> 			IntPtr handle = gtk_get_current_event ();
> 			string gtk_name = g_type_name (handle);
> 			string cs_name = mapping[gtk_name];
> 			Gdk.Event ev = null;
> 			if (cs_name != null)
> 				ev = Activator.CreateInstance (cs_name, 
> 					new object[]{handle});
> 			else
> 				// no "closest match"
> 				ev = new Gdk.Event (handle);
> 			return ev;
> 		}
> 	}
> 
> I prefer this approach over Mike Kestner's approach, merely because the
> dynamic types are kept in sync.  Though the table construction/lookup
> overhead may be undesirable, so this might not be the best alternative.

My suggested solution is to use something like:

 		public static Gdk.Event CurrrentEvent {
 			IntPtr handle = gtk_get_current_event ();
			GdkEventType type;

			type = (GdkEventType)Marshal.Read32 (handle);
			switch (type) {
			case GdkEventType.Expose:
				return (Gdk.Event)Marshal.PtrToStructure (handle, typeof (Gdk.EventExpose));
			case GdkEventType.ButtonPress:
				return (Gdk.Event)Marshal.PtrToStructure (handle, typeof (Gdk.ButtonPress));
			...
			}
 		}

Modulo some small details, it should work nicely.

lupus

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