现在不再创建并设置新窗口，而是把Gtk . window类放进一个子类，并把所有设置代码移动到构造函数。

Instead of creating a new window and setting it up, you put the Gtk.Window class into a subclass and move all setup code into a constructor.

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为了启动对象，你必须首先建立一个父脚本(类)然后调用消息窗口来运行构造函数。

To start the object, you must create a parent script (class) first and then run the constructor call from the message window.

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通过用“属性”窗口定义消息和事件处理函数，可以自动更新消息调度表(或消息映射)和类的头文件。

By using the Properties window to define message - and event-handling functions, you can automatically update the message-dispatch table (or message map) and your class header file.

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