API Reference > imodeljs-frontend > Tools > EventController EventController Class An EventController maps user input events from a Viewport to the ToolAdmin so that tools can process them. Viewports are assigned an EventController when they are registered with ViewManager.addViewport and they are destroyed with ViewManager.dropViewport. Methods Name Description constructor(vp: ScreenViewport): EventController destroy(): void Properties Name Type Description vp ConstructorProperty ScreenViewport Defined in core/frontend/src/tools/EventController.ts Line 17 Last Updated: 13 June, 2024