ResKnife/Cocoa/Categories/NSEvent-ModifierKeys.m

#import "NSEvent-ModifierKeys.h"

@implementation NSEvent (NGSModifierKeys)

+ (BOOL)isControlKeyDown
{
    return (GetCurrentKeyModifiers() & controlKey) != 0;
}

+ (BOOL)isOptionKeyDown
{
    return (GetCurrentKeyModifiers() & optionKey) != 0;
}

+ (BOOL)isCommandKeyDown
{
    return (GetCurrentKeyModifiers() & cmdKey) != 0;
}

+ (BOOL)isShiftKeyDown
{
    return (GetCurrentKeyModifiers() & shiftKey) != 0;
}

@end