我们需要一个按钮来添加要转换的源文件，以及一个用于显示此文件位置的文本字段。
We'll need a button for adding the source file to be converted, along with a field to show the location of this file.
水平菜单按钮不需要进行此类转换。
We do not need to do this conversion for the horizontal menu button.
这包括了如何将事件—包括用户级事件，如单击按钮—转换成操作和过程。
This will include how events - including user level events such as clicking on a button - are translated into operations and processes.
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