How can I pass a UIEvent to a UIScrollView

I am subclassing UIWindow and creating an implementation of sendEvent: as follows:

- (void)sendEvent:(UIEvent *)event {
    [super sendEvent:event];

    // Send event to UIScrollView here
}

How can I send the event to a UIScrollView. I tried calling the touchesB开发者_C百科egan:, etc. messages, but that did not do anything.