We create a NoteBook widget as child to the MainWindow and then add three tabs.

我们创建一个NoteBook窗口小部件作为MainWindow的子窗口，然后添加三个标签。

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We create a NoteBook widget as child to the MainWindow and then add three tabs.

我们创建一个NoteBook窗口小部件作为MainWindow的子窗口，然后添加三个标签。

youdao