title: How to pass multiple values into  @selector( ) for a UIButton?
body: <p>In other words: I have one button with two events, how to capture <code>UIControlEventTouchDown</code> and <code>UIControlEventTouchUpInside</code> in the callback function <code>setRedPos</code>?</p>
  
  <pre><code>[btnRedPos addTarget:self action:@selector(setRedPos:) forControlEvents:UIControlEventTouchDown];// I want to pass in a value of 0
  [btnRedPos addTarget:self action:@selector(setRedPos:) forControlEvents:UIControlEventTouchUpInside];// I want to pass in a value of 1
  </code></pre>
  
  <p>...</p>
  
  <pre><code>- (void) setRedPos:(UIButton*)btn
  {
  
  }
  </code></pre>