SDI应用的主框架窗口的基类。也是所有其它框架窗口类的基类。

The base class for an SDI application's main frame window. Also the base class for all other frame window classes.

youdao

现在开始定义框架类，它代表应用程序中的主窗口。

Now, define a frame class, which will represent the main window of your application.

youdao

现在开始定义框架类，它代表应用程序中的主窗口。

Now, define a frame class, which will represent the main window of your application.

youdao