Hi guys, is it possible to clip a child window. Let's say my child window is 400x400 pixels but I only want to show (say) the top left 100x100 pixels. I know I can just resize it but it's a Direct3D window and resizing is undesirable, so I want to create it the biggest it can ever be and only display a portion of it when it's not full size.

I hope I explained that correctly. Thank you.