ITMSFNCDataGridExternalScrollBar.OnChange Event
Fires when the scroll position changes. The grid assigns its own handler here to scroll the content, so implementations must call it whenever the user changes Value.
API unit family: TMSFNCDataGridRenderer
Declaring type: ITMSFNCDataGridExternalScrollBar
Type: TNotifyEvent
Syntax
property OnChange: TNotifyEvent;
__property System::Classes::TNotifyEvent OnChange = {read=GetOnChange, write=SetOnChange};