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 WM_MOUSEWHEEL 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.
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See Also RegisterWindowMessage