electron/docs/api/structures/ipc-main-event.md

IpcMainEvent Object extends Event

• frameId Integer - The ID of the renderer frame that sent this message
• returnValue any - Set this to the value to be returned in a synchronous message
• sender WebContents - Returns the webContents that sent the message
• reply Function - A function that will send an IPC message to the renderer frame that sent the original message that you are currently handling. You should use this method to "reply" to the sent message in order to guarantee the reply will go to the correct process and frame.
  • channel String
  • ...args any[]