我在mac应用程序中有一个自定义的NSView，我想在按下Return键时执行操作。
我的第一次尝试是查找此键的NSResponder操作消息（如-complet:用于ESC键）。看起来是–insertNewline：但它不适用于NSView。
第二个，override-keydown：并检查事件的keyCode。有效，但我注意到键Code只是键在键盘中的位置，不同的键盘（型号和语言）将为return键返回不同的键代码（正确吗？）。
最后一个是将我的视图子类化为NSControl，并在子类的-awakeFromNib方法中将选择器设置为perfom-action（同时设置目标）。
任何一个都有效。知道吗？
提前感谢
最后，insertNewline：效果完美。问题是，我使用“if”和“-inintersetKeyEvents:”覆盖keydown（当条件不允许执行insertNewline时，混合不好）。。。
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