"line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span>  </div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno">  107</span>  <span class="comment">// when double buffer is enabled the &quot;drawing&quot; view port is always m_viewPort, while the &quot;visible&quot; view port is always m_viewPortVisible</span></div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno">  108</span>  <span class="comment">// when double buffer is not enabled then m_