<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <meta name="Generator" content="Microsoft Exchange Server">  <style></style> </head> <body> <font face="Calibri" size="2"><span style="font-size:10.5pt;"> <div align="left" style="text-align:justify;">Hi, All</div> <div align="left" style="text-align:justify;"> </div> <div align="left" style="text-align:justify;">I want to allocate some space in client, and let compositor set some data in this space and then return back to client. </div> <div align="left" style="text-align:justify;"><font face="Times New Roman"> </font></div> <div align="left" style="text-align:justify;">It seems like user data mechanism.</div> <div align="left" style="text-align:justify;"><font face="Times New Roman"> </font></div> <div align="left" style="text-align:justify;">Any way to implement that?</div> <div align="left" style="text-align:justify;"><font face="Times New Roman"> </font></div> <div align="left" style="text-align:justify;">Thanks</div> <div align="left" style="text-align:justify;"> </div> <div align="left" style="text-align:justify;">Regards</div> <div align="left" style="text-align:justify;"> </div> <div align="left" style="text-align:justify;">Quanxian Wang</div> <div align="left" style="text-align:justify;"><font face="Times New Roman"> </font></div> </span></font> </body> </html>