ssets/dart-ui/blend_mode_dstOver.png"></p>
<p>This is useful when the source image should have been painted before the
destination image, but could not be.</p>
                  
  <div>
            <span class="signature"><code>const BlendMode(4)</code></span>
          </div>
        </dd>
        <dt id="exclusion" class="constant">
          <span class="name ">exclusion</span>
          <span class="signature">&#8594; const <a href="dart-ui/BlendMode-class.html">BlendMode</a></span>
                  <