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

TScrollEvent

Defines an event handler type for scrollbar events.

Declaration

Source position: stdctrls.pp line 63

type TScrollEvent = procedure(

  Sender: TObject;

  ScrollCode: TScrollCode;

  var ScrollPos: Integer

) of object;

Arguments

Sender

  

The scrollbar for the event notification.

ScrollCode

  

The scroll action for the notification.

ScrollPos

  

New position for the scrollbar.

Description

TScrollEvent is an object procedure which defines an event handler signalled when a scroll event occurs in the scrollbar widgetset class. The event handler is called before the new Position is set for the control. The value in Position can be adjusted to implement custom scrollbar behavior.

TScrollEvent is the type used to implement the OnScroll event handler in TCustomScrollBar.

See also

TCustomScrollBar.OnScroll

  

Event handler signalled when scrollbar messages are applied.

TCustomScrollBar.Scroll

  

Signals the OnScroll event handler.


Version 3.2 Generated 2024-02-25 Home