检测Ctrl + Return或Ctrl + Enter按下

问题描述

在这件事上，我很难找到任何官方的东西.

I find it very hard to find anything official on this matter.

我有一个TextView并覆盖keyDown事件，并尝试检测用户是否按下了 + .

I have a TextView and override the keyDown event and try to detect if the user pressed + .

- (void)keyDown:(NSEvent *)theEvent
{
    if([theEvent modifierFlags] & NSControlKeyMask && /* how to check if enter is pressed??? */)
    {
        NSLog(@"keyDown: ctrl+enter");
        if(_delegate)
        {
            if([_delegate respondsToSelector:@selector(didSomething:)])
            {
                [_delegate performSelector:@selector(didSomething:) withObject:nil];
            }
        }
    }else
    {
        [super keyDown:theEvent];
    }
}

我尝试了不同的方法，但没有任何效果.

I have tried different things but nothing worked.

有人吗?

(很抱歉提出这样一个琐碎的问题，但是我已经在Google上搜索了一段时间了，但是没有找到任何东西)

(i'm sorry to ask such a trivial question but i have googled for a while now and haven't found anything)

推荐答案

unichar c = [theEvent charactersIgnoringModifiers] characterAtIndex:0];

if(([theEvent modifierFlags] & NSControlKeyMask) && (c == NSCarriageReturnCharacter || c == NSEnterCharacter) {
    // do stuff
}

或者，您可以使用委托人的textView:doCommandBySelector::

Alternatively, you can use the delegate's textView:doCommandBySelector::

- (BOOL)textView:(NSTextView *)aTextView doCommandBySelector:(SEL)aSelector {
    // insertLineBreak: is the method sent when a user presses control-return in a text view
    if (aSelector == @selector(insertLineBreak:)) {
            // do stuff
            return YES;
        }
    }

    return NO;
}

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