下一步，我们将在这个主窗口中创建标签和按钮对象，作为主窗口的子部件。

Next, we've created Label and Button objects as child widgets inside the MainWindow.

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在第2部分中，您创建了视图部件及其对象(如按钮、文本框和表示视图)。

In part 2, you created the view parts and its objects (such as button, text box, and table view).

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这些按钮在对象图中注册为GUI测试对象，并且分配了索引以对应于它们在applet中的位置。

The buttons register as GUI test objects in the object Map, and they are assigned indexes that correspond to their positions in the applet.

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