f the bitmap is in dmBlend draw mode and <span class="EmptyRef">MasterAlpha</span> 
  is not in the [0&#133;255] range, the blending result is not specified, it is 
  your responsibility to keep <span class="EmptyRef">MasterAlpha</span> consistent 
  with current draw mode.</p>
<p id="hidden">[See also]: <a href="DrawMode.htm">DrawMode</a></p>
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