[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] | Reference for unit 'Controls' (#lcl)

# TControl.OnMouseWheelUp

OnMouseWheelUp - event handler for upward movement of mouse wheel

## Declaration

Source position: controls.pp line 1193

`protected property TControl.OnMouseWheelUp: TMouseWheelUpDownEvent read FOnMouseWheelUp write FOnMouseWheelUp;`

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