The CWndclass provides the base functionality of all window classes in the Microsoft Foundation Class Library. 类提供了微软基础类库中所有窗口类的基本功能。
Controls whether the internal window class name used in registration contains the version of the assembly that contains the window class. 控制注册中使用的内部窗口类名称是否包括包含该窗口类的程序集的版本。
