FMX.Types.TMouseWheelEvent

• Up to Parent: FMX.Types

C++

typedef void __fastcall (__closure *TMouseWheelEvent)(System::TObject* Sender, System::Classes::TShiftState Shift, int WheelDelta, bool &Handled);

Properties

Type	Visibility	Source	Unit	Parent
typedef	public	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.

See Also

• FMX.Controls.TControl.OnMouseWheel