how to prohibit UIScrollview scrolling when move in specific area?

I put one UIImageview as subview in a UIScrollview. When I zoom in the image, I can scroll the image around. Can I disable the scrolling when I touch and moving in a rectangle area of the image?

I want to get information from touchesBegan() of 开发者_如何学Pythoncustomed UIScrollview and customed UIImageview, but I found that when there are scrolling, no touchesBegan is called in customed UIImageview.

yourScrollView.scrollEnabled = YES; for scroll to be enabled.

yourScrollView.scrollEnabled = NO; for scroll to be disabled.