public static void SetHDRState(bool enabled, string displayName = null)
{
uint pathCount, modeCount;
var err = NativeMethods.GetDisplayConfigBufferSizes(QueryDisplayFlags.OnlyActivePaths, out pathCount, out modeCount);
if (err == NativeConstants.ERROR_SUCCESS)
{
var pathsArray = new DisplayConfigPathInfo[pathCount];
var modesArray = new DisplayConfigModeInfo[modeCount];
DisplayConfigTopologyId displayTopology;
err = NativeMethods.QueryDisplayConfig(QueryDisplayFlags.DatabaseCurrent, ref pathCount, pathsArray, ref modeCount, modesArray, out displayTopology);
if (err == NativeConstants.ERROR_SUCCESS)
{
foreach (var path in pathsArray)
{
// get display name
var info = new DISPLAYCONFIG_SOURCE_DEVICE_NAME();
info.header.type = DISPLAYCONFIG_DEVICE_INFO_TYPE.DISPLAYCONFIG_DEVICE_INFO_GET_SOURCE_NAME;
info.header.size = Marshal.SizeOf <DISPLAYCONFIG_SOURCE_DEVICE_NAME>();
info.header.adapterId = path.sourceInfo.adapterId;
info.header.id = path.sourceInfo.id;
err = NativeMethods.DisplayConfigGetDeviceInfo(ref info);
if (err != NativeConstants.ERROR_SUCCESS)
{
break;
}
var deviceName = info.viewGdiDeviceName;
if (displayName != null && !EqualDisplayNames(deviceName, displayName))
{
continue;
}
var setpacket = new DISPLAYCONFIG_SET_ADVANCED_COLOR_INFO();
setpacket.header = new DISPLAYCONFIG_DEVICE_INFO_HEADER();
setpacket.header.type = DISPLAYCONFIG_DEVICE_INFO_TYPE.DISPLAYCONFIG_DEVICE_INFO_SET_ADVANCED_COLOR_STATE;
setpacket.header.size = Marshal.SizeOf <DISPLAYCONFIG_SET_ADVANCED_COLOR_INFO>();;
var requestpacket = new DISPLAYCONFIG_GET_ADVANCED_COLOR_INFO();
requestpacket.header = new DISPLAYCONFIG_DEVICE_INFO_HEADER();
requestpacket.header.type = DISPLAYCONFIG_DEVICE_INFO_TYPE.DISPLAYCONFIG_DEVICE_INFO_GET_ADVANCED_COLOR_INFO;
requestpacket.header.size = Marshal.SizeOf <DISPLAYCONFIG_GET_ADVANCED_COLOR_INFO>();;
for (int i = 0; i < modeCount; i++)
{
if (modesArray[i].infoType == DisplayConfigModeInfoType.Target)
{
setpacket.header.adapterId = modesArray[i].adapterId;
setpacket.header.id = modesArray[i].id;
requestpacket.header.adapterId = modesArray[i].adapterId;
requestpacket.header.id = modesArray[i].id;
if (NativeMethods.DisplayConfigGetDeviceInfo(ref requestpacket) == NativeConstants.ERROR_SUCCESS)
{
if (requestpacket.advancedColorSupported)
{
setpacket.enableAdvancedColor = enabled ? 1U : 0;
NativeMethods.DisplayConfigSetDeviceInfo(ref setpacket);
}
}
}
}
}
}
}
if (err != NativeConstants.ERROR_SUCCESS)
{
throw new Win32Exception(err);
}
}
public static extern int DisplayConfigSetDeviceInfo(ref DISPLAYCONFIG_SET_ADVANCED_COLOR_INFO setPacket);
