Hello to all is there anyone here that has an experience on DDCCI. I really need help, honestly I am new with this kind of protocol. I just want to know how I could access or my application program can command a VGA card to control the backlight of the LCD.
First I have try to control the backlight using IOCTL control codes IOCTL_VIDEO_SET_DISPLAY_BRIGHTNESS, to be exact I have already follow the intruction stated at the MSDN but with no success it is not working although the GetLastError () functions return 0 which means success.
So I decided to use that protocol since some of the application written in cotrolling backlight us using that protocol. But honestly I dont know where to start.