检测Ctrl + Return或Ctrl + Enter按下

Question

我觉得很难在这件事上找到任何正式的东西.

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

- (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];
    }
}

我尝试了不同的东西,但没有任何效果.

任何人？

(我很抱歉问这么一个微不足道的问题,但我已经搜索了一段时间,但没有找到任何东西)

Answer 1

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

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

或者,您可以使用代理人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;
}