static void GetLayoutOffsets_cb(IntPtr inst, out int x, out int y)
{
try {
Scale __obj = GLib.Object.GetObject(inst, false) as Scale;
__obj.OnGetLayoutOffsets(out x, out y);
} catch (Exception e) {
GLib.ExceptionManager.RaiseUnhandledException(e, true);
// NOTREACHED: above call does not return.
throw e;
}
}