private static StatusCode GetDisplayConfigTargetDeviceName(
DisplayConfigModeInfo targetModeInfo,
out DisplayConfigTargetDeviceName displayConfigTargetDeviceName)
{
displayConfigTargetDeviceName = new DisplayConfigTargetDeviceName
{
header = new DisplayConfigDeviceInfoHeader
{
adapterId = targetModeInfo.adapterId,
id = targetModeInfo.id,
size =
Marshal.SizeOf(
typeof(DisplayConfigTargetDeviceName)),
type = DisplayConfigDeviceInfoType.GetTargetName,
}
};
return CCDWrapper.DisplayConfigGetDeviceInfo(ref displayConfigTargetDeviceName);
}
/// <summary>
/// This method can be used in order to filter out specific paths that we are interested,
/// a long with their corresponding paths.
/// </summary>
/// <param name="pathType"></param>
/// <param name="topologyId"></param>
/// <returns></returns>
private static IEnumerable<DisplayConfigPathWrap> GetPathWrap(QueryDisplayFlags pathType,
out DisplayConfigTopologyId topologyId)
{
topologyId = DisplayConfigTopologyId.Zero;
int numPathArrayElements;
int numModeInfoArrayElements;
var status = CCDWrapper.GetDisplayConfigBufferSizes(
pathType,
out numPathArrayElements,
out numModeInfoArrayElements);
if (status != StatusCode.Success)
{
// TODO; POSSIBLY HANDLE SOME OF THE CASES.
var reason = string.Format("GetDisplayConfigBufferSizesFailed() failed. Status: {0}", status);
throw new Exception(reason);
}
var pathInfoArray = new DisplayConfigPathInfo[numPathArrayElements];
var modeInfoArray = new DisplayConfigModeInfo[numModeInfoArrayElements];
// topology ID only valid with QDC_DATABASE_CURRENT
var queryDisplayStatus = pathType == QueryDisplayFlags.DatabaseCurrent ?
CCDWrapper.QueryDisplayConfig(
pathType,
ref numPathArrayElements, pathInfoArray,
ref numModeInfoArrayElements, modeInfoArray, out topologyId) :
CCDWrapper.QueryDisplayConfig(
pathType,
ref numPathArrayElements, pathInfoArray,
ref numModeInfoArrayElements, modeInfoArray);
//////////////////////
if (queryDisplayStatus != StatusCode.Success)
{
// TODO; POSSIBLY HANDLE SOME OF THE CASES.
var reason = string.Format("QueryDisplayConfig() failed. Status: {0}", queryDisplayStatus);
throw new Exception(reason);
}
var list = new List<DisplayConfigPathWrap>();
foreach (var path in pathInfoArray)
{
var outputModes = new List<DisplayConfigModeInfo>();
foreach (var modeIndex in new[]
{
path.sourceInfo.modeInfoIdx,
path.targetInfo.modeInfoIdx
})
{
if (modeIndex >= 0 && modeIndex < modeInfoArray.Length)
outputModes.Add(modeInfoArray[modeIndex]);
}
list.Add(new DisplayConfigPathWrap(path, outputModes));
}
return list;
}
