API Reference > ui-framework > Frontstage > TargetChangeHandler TargetChangeHandler Interface Interface defining callbacks for ZoneDropTarget changes Implemented by FrontstageComposer Methods Name Description handleTargetChanged(zoneId: WidgetZoneId, type: ZoneTargetType, isTargeted: boolean): void Defined in ui/framework/src/ui-framework/frontstage/FrontstageComposer.tsx Line 59 Last Updated: 11 June, 2024