API Reference > imodeljs-markup > MarkupTools > EditTextTool > onMouseStartDrag onMouseStartDrag Method Invoked when the cursor begins moving while a button is depressed. onMouseStartDrag(_ev: BeButtonEvent): Promise<EventHandled> Parameter Type Description _ev BeButtonEvent Returns - Promise<EventHandled> Yes if event completely handled by tool and event should not be passed on to the IdleTool. Defined in markup/src/TextEdit.ts Line 205 Last Updated: 12 June, 2024