Unit 'Controls'	Package
[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index]	[#lcl]

TMouseWheelEvent

Specifies an event handler used to respond to mouse wheel events.

Declaration

Source position: controls.pp line 453

type TMouseWheelEvent = procedure(

Sender: TObject;

Shift: TShiftState;

WheelDelta: Integer;

MousePos: TPoint;

var Handled: Boolean

) of object;

`Sender`		The control under the mouse.
`Shift`		State of the modifier keys and mouse buttons.
`WheelDelta`		How many notches the wheel has been turned.
`MousePos`		The mouse position, in client coordinates.
`Handled`		Set Handled to True when the event was handled.