如果定义了 meaning in English
ifdef
Examples
- The remove method , if defined , will be named
；如果定义了remove方法，它将叫做 - The add method , if defined , will be named
的事件，如果定义了add方法，它将叫做 - And the setter method , if defined , will be called
；如果定义了setter方法，它将叫做 - The getter method , if defined , will be called
的属性，如果定义了getter方法，它将叫做 - If a data source control is defined ; otherwise ,
如果定义了数据源控件，则为