Filtering window modifyning events

Question

I have this message loop:

while (!shutdown_now_) 
    {
        NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
        NSEvent *event = [NSApp nextEventMatchingMask:NSAnyEventMask
                                            untilDate:[NSDate distantFuture]
                                               inMode:NSDefaultRunLoopMode
                                              dequeue:YES];
        if (event) [NSApp sendEvent:event];
        // If modifying window event, do something!!! 
        [pool drain];
    } 

I want to filter all NSEvents that modifying a window, for example move, resize, order out e.t.c. I've trying looking for the type in Apple documentation but w/o success. Any help? Thanks!

Answer 1

The event type I was looking for is NSAppKitDefined:

while (!shutdown_now_) 
    {
        NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
        NSEvent *event = [NSApp nextEventMatchingMask:NSAnyEventMask
                                            untilDate:[NSDate distantFuture]
                                               inMode:NSDefaultRunLoopMode
                                              dequeue:YES];
        if (event.type == NSAppKitDefined)
        {
            NSLog(@"NSAppKitDefinedEvent with subtype: %d", event.subtype);
        }
        if (event) [NSApp sendEvent:event];
        [pool drain];
    }