title: Strange problem about conversion between GDI+ to GDI: Bitmap and HBitmap
body: <p>I want to convert gdi+ Bitmap into gdi object HBitmap.</p>
  
  <p>I am using the following method:</p>
  
  <pre><code>   Bitmap* img = new Bitmap(XXX);
              // lots of codes...
      HBITMAP temp;
      Color color;
      img-&gt;GetHBITMAP(color, &amp;temp);
  </code></pre>
  
  <p>the img object is drawing on a dialog.
  when this part of method is called, strange thing happens!
  the img displaying in the window changed!
  It become a bit clearer or sharper.
  My question is what happens? </p>