CWnd::OnRegisteredMouseWheel
afx_msg LRESULT OnRegisteredMouseWheel( WPARAM wParam**, LPARAM** lParam );
Return Value
Insignificant at this time. Always zero.
Parameters
wParam
Horizontal position of the pointer.
lParam
Vertical position of the pointer.
Remarks
The framework calls this member function as a user rotates the mouse wheel and encounters the wheel's next notch. Unless overridden, OnRegisteredMouseWheel registers the Windows message, routes the message to the appropriate window, and calls the handler for that window.
Override this member function to provide your own message routing or to alter the mouse-wheel scrolling behavior.
Note OnRegisteredMouseWheel handles messages for Windows 95 and Windows NT 3.51. For Windows NT 4.0 message handling, use OnMouseWheel.