TScrollBar.OnScroll property

Declaration

property OnScroll:;

Description

OnScroll is a TScrollEvent property which provides an event handler signalled when the position for the scrollbar has been changed.

Sender contains the scrollbar for the event.

ScrollCode contains the scroll command constant for the operation.

ScrollPos contains the new position for the scrollbar when the operation is completed. The event handler can be used to override the value in ScrollPos before it is applied to the Position property in the class instance.

OnScroll is signalled (when assigned) from the Scroll method, and occurs when control messages, like CNHScroll and CNVScroll, are processed and applied.

Use the OnChange event to respond to programmatic changes to property values in the scrollbar.

This description is the one of StdCtrls.TCustomScrollBar.OnScroll.

See also

• Position
• Scroll
• OnChange
• TScrollEvent