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<p class="Decl"><b>property</b> MasterAlpha: <a href="../../../../GR32/Types/Color%20Types.htm#TColor32">TColor32</a>;</p>
<h2>Description</h2>
<p class="Body">When blending a bitmap to the screen or to another bitmap, <span class="EmptyRef">MasterAlpha</span> 
  normally controls the blending factor. The per-pixel opacity, stored in the 
  blended bitmap, is premultiplied with <span class="EmptyRef">MasterAlpha</span>. 
  If the <span class="EmptyRef">MasterA