http://blogs.msdn.com/doronh/archive/2009/03/05/wdfrequests-are-for-sharing-in-kmdf-v1-9.aspxIn my last post I described why a WDFREQUEST is unique to a particular WDFDEVICE.&#160; There is one particular programming pattern where this is not the behavior you want.&#160; This pattern is when you have each PDO accepting IO requests which it thenenCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/doronh/archive/2009/03/05/wdfrequests-are-for-sharing-in-kmdf-v1-9.aspx#9650940Fri, 29 May 2009 02:38:44 GMT91d46819-8472-40ad-a661-2c78acb4018c:9650940 A Hole In My Head WDFREQUESTs are for sharing in KMDF v1 9 | Paid Surveys<p>PingBack from <a rel="nofollow" target="_new" href="http://paidsurveyshub.info/story.php?title=a-hole-in-my-head-wdfrequests-are-for-sharing-in-kmdf-v1-9">http://paidsurveyshub.info/story.php?title=a-hole-in-my-head-wdfrequests-are-for-sharing-in-kmdf-v1-9</a></p> http://blogs.msdn.com/doronh/archive/2009/03/05/wdfrequests-are-for-sharing-in-kmdf-v1-9.aspx#9835288Thu, 16 Jul 2009 11:20:27 GMT91d46819-8472-40ad-a661-2c78acb4018c:9835288PrasannaKBhat<p>Hi doronh,</p> <p>I have one Vedio Projector which is connected through USB. </p> <p>I am able to get the info whenever it is connected to the USB Port.</p> <p>But After that,</p> <p>I want to know whether projector is powered on or off.</p> <p>Is it possible ?</p> <p>Please suggest</p>