Vcl.Controls.TControl.OnMouseWheelDown
Delphi
property OnMouseWheelDown: TMouseWheelUpDownEvent read FOnMouseWheelDown write FOnMouseWheelDown;
C++
__property TMouseWheelUpDownEvent OnMouseWheelDown = {read=FOnMouseWheelDown, write=FOnMouseWheelDown};
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| event | protected | Vcl.Controls.pas Vcl.Controls.hpp |
Vcl.Controls | TControl |
Description
Occurs when the mouse wheel is rotated downward.
Write code in the OnMouseWheelDown event handler to perform actions when the mouse wheel is rotated downward. OnMouseWheelDown occurs only if the message is not already handled in an OnMouseWheel event handler.
OnMouseWheelDown is an event handler of type Vcl.Controls.TMouseWheelUpDownEvent.