[MSDN Library June 1998] System-Defined IOCTL_VIDEO_XXX Requests (29.4187773608505%)
MSDN Library Visual Studio 6.0 > DDK Documentation > Microsoft Windows NT 4.0 DDK > Graphics Drivers > Design Guide > Part 2: Display and Video Miniport Drivers > Chapter 7 Video Miniport Drivers > HwVidStartIO Functionality