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Created January 4, 2020 00:02
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Native window open not transparent...
<!DOCTYPE html>
<meta charset="UTF-8">
<!-- All of the Node.js APIs are available in this renderer process. -->
We are using Node.js <script>document.write(process.versions.node)</script>,
Chromium <script>document.write(</script>,
and Electron <script>document.write(process.versions.electron)</script>.
// You can also require other files to run in this process
// Modules to control application life and create native browser window
const { app, BrowserWindow } = require('electron')
// Keep a global reference of the window object, if you don't, the window will
// be closed automatically when the JavaScript object is garbage collected.
let mainWindow
function createWindow() {
// Create the browser window.
mainWindow = new BrowserWindow({
width: 800,
height: 600,
frame: false,
transparent: true,
backgroundColor: "#00000000",
resizable: false,
webPreferences: {
nodeIntegration: true,
nativeWindowOpen: true
(event, url, frameName, disposition, options) => {
Object.assign(options, {
titleBarStyle: "customButtonsOnHover",
frame: false,
transparent: true,
backgroundColor: "#00000000",
maximizable: false,
minimizable: false,
fullscreenable: false,
resizable: false,
x: null,
y: null,
width: 400,
height: 300,
center: true
squareWindow = event.newGuest = new BrowserWindow(options);
// and load the index.html of the app.
// Open the DevTools.
// mainWindow.webContents.openDevTools()
// Emitted when the window is closed.
mainWindow.on('closed', function () {
// Dereference the window object, usually you would store windows
// in an array if your app supports multi windows, this is the time
// when you should delete the corresponding element.
mainWindow = null
// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.on('ready', createWindow)
// Quit when all windows are closed.
app.on('window-all-closed', function () {
// On OS X it is common for applications and their menu bar
// to stay active until the user quits explicitly with Cmd + Q
if (process.platform !== 'darwin') {
app.on('activate', function () {
// On OS X it's common to re-create a window in the app when the
// dock icon is clicked and there are no other windows open.
if (mainWindow === null) {
// In this file you can include the rest of your app's specific main process
// code. You can also put them in separate files and require them here.
// This file is required by the index.html file and will
// be executed in the renderer process for that window.
// All of the Node.js APIs are available in this process.
var win =;
win.document.write("<h1>Not transparent...</h1>")
win.document.querySelectorAll("*").forEach(function(n){ = "background: transparent;";
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