<div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial"><div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial"><div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial"><div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial"> Hi<pre>   I want to filter the graphics to the client. For example, only the<br>graphics of a calculator(in guest OS Win7) are send to the client. <br>   I know that there is always the possibility of falling all the way back to CPU drawing to a memory bitmap which is then copied to the client.<br>   Now, I have filtered the drawing commands on device-managed surfaces which belong to some app.exe. However I don't know how to control the engine-managed surfaces, namely those pre-rendered bitmaps. I didn't find related code in QXL driver. <br>   Could you please give me some advice? I really need some help.<br><br></pre><div>Thanks in advance</div><div> Best Regards!</div><pre><br></pre></div></div></div></div><br><br><span title="neteasefooter"><span id="netease_mail_footer"><hr/> <a href="http://www.lofter.com" target="_blank">网易Lofter，专注兴趣，分享创作！</a> </span></span>