TTMSFNCTimeline.OnBeforeDrawIndicator Event
Occurs before timeline drawing so rendering can be customized or cancelled.
API unit family: TMSFNCTimeline
Declaring type: TTMSFNCTimeline
Inherited from: TTMSFNCCustomTimeline
Syntax
OnBeforeDrawIndicator: TTMSFNCTimelineBeforeDrawIndicator;
Parameters
| Name | Description |
|---|---|
Sender |
Object that triggered the event. |
AGraphics |
Graphics context used for drawing. |
AIndicator |
Indicator associated with the event. |
ADrawingParams |
Drawing parameters for the timeline element. |
AAllow |
Set to False to cancel the operation. |
ADefaultDraw |
Set to False to skip the default drawing operation. |