UPDATE:

I'm now using a child window as you suggested, fixed into the required position on the main window.

Everything works a treat now in this respect - I'm having some strange rendering...

Unfortunately I do need a double buffered context.

I'm not familiar with child windows, at first I hoped they could be 'attached' to the parent window and would automagically be moved around when...

Hi,
I'm porting some Mac code to Windows, and in the Mac version the gl context only covered a certain part of the window.
This was achieved by clipping the gl buffer as follows:

GLint...