TdxCustomChartControl.OnChange Event

Allows you to respond to any change in the Chart control.

Declaration

property OnChange: TNotifyEvent read; write;

Remarks

The OnChange event occurs on every data and setting change in the Chart control.

The BeginUpdate procedure prevents the OnChange event from occurring until an EndUpdate or CancelUpdate procedure call. The EndUpdate procedure raises the OnChange event only once for all changes made between the BeginUpdate and EndUpdate procedure calls. The CancelUpdate procedure does not raise the OnChange event but allows the Chart control to raise the event in response to further changes.