The framework calls this method when the pointer moves.
afx_msg void OnMouseMove(
   UINT nFlags,
   CPoint point
);
Parameters
- [in] nFlags 
 Indicates whether a user pressed modifier keys. For possible values see the parameter wParam in WM_MOUSEMOVE Notification.
- [in] point 
 Specifies the x and y coordinates of the pointer relative to the upper-left corner of the window.
Requirements
Header: afxframewndex.h