RAD Studio VCL Reference
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TCategoryButtons.OnMouseWheel Event
TCategoryButtons Class | TCategoryButtons Members | CategoryButtons Namespace | Description | See Also
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Occurs when the mouse wheel is rotated.

Pascal
property OnMouseWheel: TMouseWheelEvent;
C++
__property TMouseWheelEvent OnMouseWheel;
Description

Write code in the OnMouseWheel event handler to respond to mouse wheel messages. If there is no OnMouseWheel event handler, or if the mouse wheel message is not handled in the OnMouseWheel event handler, then an OnMouseWheelUp or OnMouseWheelDown event occurs, depending on the direction the mouse wheel was rotated. 

 

See Also
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