Assign a HWND to an OpenCV named window

Question

I have a win32 child window handle from a win32 application and I want to draw my openCV stuff on that child window. Is there a way to set the HWND of an openCV named window. I only found a function cvGetWindowHandle to get the HWND of an already created named window, but not an equivalent one to set the HWND of a new named window.

Any pointers on how that could be done?

Thanks!