检测按下哪个键

本文介绍了检测按下哪个键的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我如何知道在Cocoa应用程序中按哪个键（我知道每个键都有一个相关的号码）？

How do I tell which key was pressed in a Cocoa Application (I know each key has an associated number)? In my case, I want to log the key to the console.

这是我的代码：

- (BOOL)acceptsFirstResponder {
return YES;
}


-(void)keyUp:(NSEvent*)event {
NSLog(@"Key %@", event);
}

推荐答案

http://developer.apple.com/library/mac/documentation/Cocoa/Reference/ApplicationKit/Classes/NSEvent_Class/Reference/Reference.html =nofollow> NSEvent 方法，或。

Use the NSEvent methods keyCode, characters or charactersIgnoringModifiers.

- (void)keyUp:(NSEvent *)event {
    NSLog(@"Characters: %@", [event characters]);
    NSLog(@"KeyCode: %hu", [event keyCode]);
}

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