electron添加托盘图标，以及为托盘图标添加上下文菜单

const {app,BrowserWindow,Menu,Tray} = require('electron');

let tray;
let contextMenu;

function createWindow(){
   win = new BrowserWindow({
    show:false,
    webPreferences: {
        nodeIntegration: true
    }
   });
   
   win.loadFile('index.html');

   //添加托盘图标
   tray = new Tray('./images/icon.png');
   //生成上下文菜单
   contextMenu = Menu.buildFromTemplate([
        {label:'复制',role:'copy'},
        {label:'粘贴',role:'paste'},
        {label:'剪切',role:'cut'}
    ]);
   tray.setToolTip('托盘图标提示文本');//鼠标移到托盘图标上会提示这段文本
   tray.setContextMenu(contextMenu);//为托盘图标添加上下文菜单

   win.on('ready-to-show',()=>{
       win.show();
   });
   win.on('closed',()=>{
    console.log('closed');
    win = null;
   });

   //打开开发者工具
   win.webContents.openDevTools();
}

app.allowRendererProcessReuse = true;
app.on('ready',createWindow);
app.on('window-all-closed',()=>{
    console.log('window-all-closed');
    if(process.platform != 'darwin'){
        app.quit();
    }
});
app.on('activate',()=>{
    console.log('activate');
    if(win == null) {
        createWindow();
    }
});