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The framework calls this member function as a user rotates the mouse wheel and encounters the wheel's next notch.

afx_msg LRESULT OnRegisteredMouseWheel(
   WPARAM wParam,
   LPARAM lParam 


Horizontal position of the pointer.
Vertical position of the pointer.

Return Value

Insignificant at this time. Always zero.


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 95/98 and Windows NT 3.51. For Windows NT 4.0 message handling, use OnMouseWheel.

See Also

CWnd Overview | Class Members | Hierarchy Chart | RegisterWindowMessage

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