You can only obtain a lock on an object that returns a reference.

您只能在返回引用的对象上获得锁。

youdao

Easy language computer lock screen source, application programming source code, a good reference.

说明：易语言电脑锁屏源码，应用程序编程源码，很好的参考资料。

youdao

Easy language computer lock screen source, application programming source code, a good reference.

说明：易语言电脑锁屏源码，应用程序编程源码，很好的参考资料。

youdao