FMX.Types.TMouseWheelEvent
Delphi
TMouseWheelEvent = procedure(Sender: TObject; Shift: TShiftState; WheelDelta: Integer; var Handled: Boolean) of object;
C++
typedef void __fastcall (__closure *TMouseWheelEvent)(System::TObject* Sender, System::Classes::TShiftState Shift, int WheelDelta, bool &Handled);
Properties
Type | Visibility | Source | Unit | Parent |
---|---|---|---|---|
type typedef |
public | FMX.Types.pas FMX.Types.hpp |
FMX.Types | FMX.Types |
Description
Procedural type that is used for all OnMouseWheel event types.
A TMouseWheelEvent event handler must be called with the following parameters:
Sender
--a pointer to the object that called this function.Shift
--indicates which shift keys--SHIFT, CTRL, ALT, and CMD (only for Mac)--were down when the user pressed the mouse button.WheelDelta
--indicates the distance the wheel was rotated.Handled
--indicates whether the scroll bar was already moved.