Use Half of QCView

I feel like this should be a simple issue, but I can't figure it out.

I have a QCView in my app. When I display it normally, it looks like this: QCView. But, I only want to see the top half of it, because on the bottom half I want to see what is on the NSView un开发者_如何学Cder it. When I try to do this, I get this: QCView Half. How can I get it to show only the top half, and not use the middle as an anchor?

Thanks!