int MapWindowPoints( HWND hWndTo, LPPOINT lpPoint, UINT nCount ) const;
int MapWindowPoints( HWND hWndTo, LPRECT lpRect ) const;
See MapWindowPoints in the Win32 SDK.
Remarks
Converts a set of points from the window's coordinate space to the coordinate space of another window. The second version of this method allows you to convert the coordinates of a RECT structure.
CWindow Overview | Class Members
See Also POINT