API Reference > imodeljs-frontend > NativeApp > IpcApp > addListener addListener MethodStatic Establish a message handler function for the supplied channel over Ipc. The handler will be called when messages are sent for the channel via BackendIpc.send. addListener(channel: string, handler: IpcListener): RemoveFunction note Ipc is only supported if IpcApp.isValid is true. Parameter Type Description channel string the name of the channel handler IpcListener the message handler Returns - RemoveFunction A function to remove the handler Defined in core/frontend/src/IpcApp.ts Line 60 Last Updated: 12 June, 2024