碳事件“消耗”

Question

我遇到了问题，这与此处描述的问题相反：cocoa-global-shortcuts。示例：当我分配“a”键作为快捷键（没有修饰符）时，每次按“a”我的回调被触发，但其他应用程序没有得到“a”按：TextEdit，XCode等我不想“消耗”这个事件。 这是代码：

 EventTypeSpec eventTypePressed = { kEventClassKeyboard, kEventHotKeyPressed };
 InstallApplicationEventHandler(&HotKeyPressedHandler, 1, &eventTypePressed, self, NULL);

 EventTypeSpec eventTypeReleased = { kEventClassKeyboard, kEventHotKeyReleased };
 InstallApplicationEventHandler(&HotKeyReleasedHandler, 1, &eventTypeReleased, self, NULL);

  EventHotKeyID eventHotKeyID = { 'htky', 1 };
  RegisterEventHotKey(shortcut.code, shortcut.flags, eventHotKeyID, GetApplicationEventTarget(), 0, &_eventHotKeyRef);

OSStatus HotKeyPressedHandler(EventHandlerCallRef nextHandler, EventRef theEvent, void *userData) {
    ShortcutHandler* handler = userData;
    [handler.delegate keyWasPressed:handler];
    return CallNextEventHandler(nextHandler, theEvent);
}

OSStatus HotKeyReleasedHandler(EventHandlerCallRef nextHandler, EventRef theEvent, void *userData) {
    ShortcutHandler* handler = userData;
    [handler.delegate keyWasReleased:handler];
    return CallNextEventHandler(nextHandler, theEvent);
}

谢谢！