我自己开发的一个类QQ窗口，其中登陆界面及登陆成功转换界面在一个窗口中，美化了界面，而且最小化到任务栏，且添加了任务栏图标菜单。-I have developed a class QQ window, which landed a successful conversion interface and login interface in a window, beautify the interface, but also minimized to the taskbar, and add th