JuneyWang at viatech.com.cn wrote at Thursday, June 20, 2013 2:00 AM: > Dear, > I obtained your email on line. I’m sorry to interrupt you. I just want to ask a question. > > If I call VdpPresentationQueueSetBackgroundColor with a background color, what does the alpha member > mean？ The alpha member is ignored. -- nvpublic