void main(List<String> args) async {
  WidgetsFlutterBinding.ensureInitialized();

  if (args.firstOrNull == 'multi_window') {
    runApp(const MySubWindow());
  } else {
    // WidgetsFlutterBinding.ensureInitialized();

    await windowManager.ensureInitialized();

    windowManager.waitUntilReadyToShow().then((_) async {
      await windowManager.setTitle('我的第一个桌面应用');
      await windowManager.setSize(const Size(800, 600));
      await windowManager.setMinimumSize(const Size(800, 600));
      await windowManager.center();
      await windowManager.show();
      // await windowManager.setSkipTaskbar(false);
    });

    runApp(const MyApp());
  }
}

import 'dart:convert';

import 'package:desktop_multi_window/desktop_multi_window.dart';
import 'package:flutter/material.dart';

class MultiWindowPage extends StatefulWidget {
  const MultiWindowPage({Key? key}) : super(key: key);

  @override
  State<MultiWindowPage> createState() => _MultiWindowPageState();
}

class _MultiWindowPageState extends State<MultiWindowPage> {
  void _addWindow() async {
    final window = await DesktopMultiWindow.createWindow(jsonEncode({}));
    window
      ..setFrame(const Offset(0, 0) & const Size(600, 450))
      ..center()
      ..setTitle('标题在这里')
      ..show();
  }

  @override
  Widget build(BuildContext context) {
    return Center(
      child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          ElevatedButton(
            onPressed: _addWindow,
            child: const Text('创建新窗口'),
          ),
        ],
      ),
    );
  }
}

import 'package:flutter/material.dart';

class MySubWindow extends StatelessWidget {
  const MySubWindow({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        primarySwatch: Colors.blue,
        fontFamily: 'Microsoft YaHei',
      ),
      home: const Scaffold(
        body: Center(
          child: Text(
            '0101, 这里是07😎',
            style: TextStyle(fontSize: 24),
          ),
        ),
      ),
    );
  }
}