Broadcasting message from ipcMain in electron

问题

I need to broadcast a message from main process of electron to all renderer processes. There is no send option for ipcMain, only an option to reply to the sender via event.sender.send().

回答1:

You are looking for the webContents API. From the same page of documentation in your post:

It is also possible to send messages from the main process to the renderer process, see webContents.send for more information.

Here is the doc for webContents

回答2:

You could make an array of windows, then iterate over them and send a message to each one:

var windowsArr = [];

windowsArr.push(new BrowserWindow({title: "Win 1"}));
windowsArr.push(new BrowserWindow({title: "Win 2"}));

function broadcast (message) {
    for (var i = 0; i < windowsArr.length; i++) {
        windowsArr[i].webContents.send('asynchronous-message', message);
    }
}

来源：https://stackoverflow.com/questions/44126768/broadcasting-message-from-ipcmain-in-electron