Proxy obj = (Proxy)topLevelObjects.send("objectAtIndex:", i);
if ( (Long)obj.send("isKindOfClass:", cls("NSWindow")) > 0 ){
mainWindow = obj;
} else {
obj.dispose(false);
}
}
//Proxy windowController = c.chain("NSWindowController", "alloc").chain("initWithWindow:", mainWindow.getPeer());
//System.out.println("Window loaded? "+windowController.send("isWindowLoaded"));