electron如何设置窗口的尺寸和位置

width:窗口宽度
height:窗口高度
minWidth:窗口最小宽度
maxWidth:窗口最大宽度
minHeight:窗口最小高度
maxHeight:窗口最大高度
x:指定窗口的横坐标
y:指定窗口的纵坐标

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

function createWindow(){
   win = new BrowserWindow({
    width:800,
    height:600,
    minWidth:400,
    minHeight:400,
    maxWidth:800,
    maxHeight:600,
    x:20,
    y:40,
    webPreferences: {
        nodeIntegration: true
    }
   })
   win.loadFile('index.html');
   win.on('closed',()=>{
    console.log('closed');
    win = null;
   });
}

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();
    }
});