有没有公共API来做到这一点在Vista中/ 7 AFAIK。

There is no public API to do this in Vista/7 AFAIK.

有关我创建了一个媒体中心推出的东西，我只好打开控制面板和按键发送到对话框，一个很大的丑陋的黑客攻击，但它是***的，你可以做。 （或者直接在媒体中心.NET反射器（它是能够改变它，使用无证话费））

For a media center launch thing I created, I had to open the control panel and send keys to the dialog, a big ugly hack, but it's the best you can do. (Or run .net reflector on media center (It is able to change it, using undocumented calls))