test touches in uiwindow subclass

@interface MyWindow : UIWindow
@end

@implementation MyWindow

- (void)sendEvent:(UIEvent *)event {

    [super sendEvent:event];
    
    NSSet *tocuhes = [event touchesForWindow:self];
    
    for(UITouch *touch in tocuhes){
        NSLog(@"XXXX For this view: %@",[touch.view class]);
        UIView *view = [self hitTest:[touch locationInView:touch.view] withEvent:event];
        NSLog(@"YYYY This will receive: %@",[view class]);
    }
}

@end

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[MyWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    
    
    ....
    
 }