API Reference > imodeljs-frontend > Tools > ViewManip > onTouchMoveStart onTouchMoveStart Method Called after at least one touch point has moved for an appreciable time and distance along the surface to not be considered a tap. onTouchMoveStart(ev: BeTouchEvent, startEv: BeTouchEvent): Promise<EventHandled> Parameter Type Description ev BeTouchEvent startEv BeTouchEvent Returns - Promise<EventHandled> Yes if event completely handled by tool and event should not be passed on to the IdleTool. Defined in core/frontend/src/tools/ViewTool.ts Line 568 Last Updated: 29 November, 2022