Official OCV 4 replacement for cvGetWindowHandle

C++
,
5

I would have to look at all of the references but at least one reason is to put a specific icon on that window as in

DWORD dwresult;
dwresult = ::SetClassLong(hw,
GCL_HCURSOR,
(LONG)LoadCursor(AfxGetInstanceHandle(),
MAKEINTRESOURCE(IDC_ARROW)));