title: addGlobalMonitorForEventsMatchingMask doesn't capture global keypresses
body: <p>I have a <strong>status bar app</strong>. I'm using this code to capture very user's key press in the system:</p>
  
  <pre><code>_keybordEventMonitor = 
  [NSEvent addGlobalMonitorForEventsMatchingMask:(NSKeyDownMask) handler:^(NSEvent        *incomingEvent)
  {
      [self inputKeyboardEventHandler: incomingEvent];
  }];
  </code></pre>
  
  <p>It captures everything fine, but doesn't capture global system hotkeys like <kbd>cmd</kbd> + <kbd>space</kbd> or <kbd>cmd</kbd>+<kbd>shift</kbd>+<kbd>3</kbd>.</p>
  
  <p>Accessibility APIs are enabled. Any ideas?</p>
  
  <p>PS: I tried using <code>CGEventTap</code> and it's kind of works, but had it's own problems and since I'm a cocoa noob, I prefer to keep things simple for now.</p>