private uint ReadDCBrightness()
{
uint val = 0;
WindowsSevenNativeFunctions.PowerReadDCValueIndex(
IntPtr.Zero,
ref currentPowerScheme,
ref this.GUID_VIDEO_SUBGROUP,
ref this.GUID_VIDEO_BRIGHTNESS,
ref val);
return(val);
}
public static Guid GetActivePowerScheme()
{
IntPtr ptrActiveGuid = IntPtr.Zero;
uint res = WindowsSevenNativeFunctions.PowerGetActiveScheme(IntPtr.Zero, ref ptrActiveGuid);
if (res != 0)
{
throw new Exception("Error reading current power scheme. Native Win32 error code = " + res);
}
var activeSchemeGuid = (Guid)Marshal.PtrToStructure(ptrActiveGuid, typeof(Guid));
return(activeSchemeGuid);
}