title: Detecting Up / Down arrows in CSpinButtonCtrl MFC C++
body: <p>Is there any way to differentiate when the Up or Down arrow of a <code>CSpinButtonCtrl</code> is pressed?</p>
  
  <p>I am trying to use the <code>OnPointerdown</code> event, but I don't know how to do it...</p>
  
  <pre><code>afx_msg LRESULT CMySpinButtonCtrl::OnPointerdown(WPARAM wParam, LPARAM lParam)
  {
     if(IS_POINTER_PRIMARY_WPARAM(wParam))
     {
         //TODO
     }
     return 0;
  }
  </code></pre>
  
  <p>I will appreciate any kind of help.</p>