Question

当用户用此代码按下任何 Shift 键时, 我可以识别 :

-(void)flagsChanged:(NSEvent *)theEvent
{
    if ([theEvent modifierFlags] & NSShiftKeyMask)
        //. . .
}

但是否有办法区分被按下是右键还是左键的 Shift 键?

Answer 1

你可以做到这一点:

-(void)flagsChanged:(NSEvent *)theEvent {

    if ([theEvent modifierFlags] == 131330) {
        NSLog(@"Left shift pressed!");
    }

    if ([theEvent modifierFlags] == 131332) {
        NSLog(@"Right shift pressed!");
    }
}

Answer 2

在斯威夫特:

let isLeftShift = event.modifierFlags.rawValue & UInt(NX_DEVICELSHIFTKEYMASK) != 0
let isRightShift = event.modifierFlags.rawValue & UInt(NX_DEVICERSHIFTKEYMASK) != 0

Answer 3

static __INLINE void i_modifier_flags(
                        NSUInteger flags,
                        bool_t *rshift, bool_t *rctrl, bool_t *rcommand, bool_t *ralt,
                        bool_t *lshift, bool_t *lctrl, bool_t *lcommand, bool_t *lalt)
{
    *rshift = ((flags & 131332) == 131332) ? TRUE : FALSE;
    *rctrl = ((flags & 270592) == 270592) ? TRUE : FALSE;
    *rcommand = ((flags & 1048848) == 1048848) ? TRUE : FALSE;
    *ralt = ((flags & 524608) == 524608) ? TRUE : FALSE;
    *lshift = ((flags & 131330) == 131330) ? TRUE : FALSE;
    *lctrl = ((flags & 262401) == 262401) ? TRUE : FALSE;
    *lcommand = ((flags & 1048840) == 1048840) ? TRUE : FALSE;
    *lalt = ((flags & 524576) == 524576) ? TRUE : FALSE;
}

友情链接