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

TCustomUpDown.DoMouseWheelLeft

Performs actions when a mouse wheel left event occurs for the control.

Declaration

Source position: comctrls.pp line 1976

protected function TCustomUpDown.DoMouseWheelLeft(

  Shift: TShiftState;

  MousePos: TPoint

):Boolean; override;

Arguments

Shift

  

Shift, Ctrl, or Alt modifier for the mouse wheel event.

MousePos

  

Coordinates for the mouse pointer when the wheel event was received.

Function result

Returns True if the mouse wheel event was handled by an OnMouseWheelLeft event handler in the ancestor class.

Version 4.0 Generated 2025-05-03 Home