为此，我们为每一类型控件使用了一组注册函数：按钮、标签等等。
For this we use a set of register functions for each type of widget: buttons, labels, and so on.
我上面概述的这些类型的内容定制场景不仅对按钮控件有效，同样地对其他继承自ContentControl基类的其他控件也工作。
These types of content customization scenarios I outlined above work not just for Button controls, but likewise for all other controls that derive from the ContentControl base class.
在网页上充当按钮控件的类中实现此接口。
Implement this interface in classes that act like button controls on Web pages.
类CBitmapButton用于创建用位图而不是文本做标签的按钮控件。
Use the CBitmapButton class to create pushbutton controls labeled with bitmapped images instead of text.
有些控件类对鼠标按钮事件具有固有的类处理。
Some control classes might have inherent class handling for mouse button events.
有些控件类对鼠标按钮事件具有固有的类处理。
Some control classes might have inherent class handling for mouse button events.
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