public static Boolean GetDisplaySettings(ref CCDWrapper.DisplayConfigPathInfo[] pathInfoArray, ref CCDWrapper.DisplayConfigModeInfo[] modeInfoArray, Boolean ActiveOnly)
{
uint numPathArrayElements;
uint numModeInfoArrayElements;
// query active paths from the current computer.
CCDWrapper.QueryDisplayFlags queryFlags = CCDWrapper.QueryDisplayFlags.AllPaths;
if (ActiveOnly)
{
queryFlags = CCDWrapper.QueryDisplayFlags.OnlyActivePaths;
}
var status = CCDWrapper.GetDisplayConfigBufferSizes(queryFlags, out numPathArrayElements, out numModeInfoArrayElements);
if (status == 0)
{
pathInfoArray = new CCDWrapper.DisplayConfigPathInfo[numPathArrayElements];
modeInfoArray = new CCDWrapper.DisplayConfigModeInfo[numModeInfoArrayElements];
status = CCDWrapper.QueryDisplayConfig(queryFlags,
ref numPathArrayElements, pathInfoArray, ref numModeInfoArrayElements,
modeInfoArray, IntPtr.Zero);
if (status == 0)
{
return true;
}
}
return false;
}
public static Boolean LoadDisplaySettings(String fileName)
{
// Objects for DeSerialization of pathInfo and modeInfo classes
System.Xml.Serialization.XmlSerializer readerPath = new System.Xml.Serialization.XmlSerializer(typeof(CCDWrapper.DisplayConfigPathInfo));
System.Xml.Serialization.XmlSerializer readerModeTarget = new System.Xml.Serialization.XmlSerializer(typeof(CCDWrapper.DisplayConfigTargetMode));
System.Xml.Serialization.XmlSerializer readerModeSource = new System.Xml.Serialization.XmlSerializer(typeof(CCDWrapper.DisplayConfigSourceMode));
System.Xml.Serialization.XmlSerializer readerModeInfoType = new System.Xml.Serialization.XmlSerializer(typeof(CCDWrapper.DisplayConfigModeInfoType));
System.Xml.Serialization.XmlSerializer readerModeAdapterID = new System.Xml.Serialization.XmlSerializer(typeof(CCDWrapper.LUID));
// Lists for storing the results
List<CCDWrapper.DisplayConfigPathInfo> pathInfoList = new List<CCDWrapper.DisplayConfigPathInfo>();
List<CCDWrapper.DisplayConfigModeInfo> modeInfoList = new List<CCDWrapper.DisplayConfigModeInfo>();
// Loading the xml file
XmlReader xml = XmlReader.Create(fileName);
xml.Read();
while (true)
{
if ((xml.Name.CompareTo("DisplayConfigPathInfo") == 0) && (xml.IsStartElement()))
{
CCDWrapper.DisplayConfigPathInfo pathInfo = (CCDWrapper.DisplayConfigPathInfo)readerPath.Deserialize(xml);
pathInfoList.Add(pathInfo);
continue;
}
else if ((xml.Name.CompareTo("modeInfo") == 0) && (xml.IsStartElement()))
{
CCDWrapper.DisplayConfigModeInfo modeInfo = new CCDWrapper.DisplayConfigModeInfo();
xml.Read();
xml.Read();
modeInfo.id = Convert.ToUInt32(xml.Value);
xml.Read();
xml.Read();
modeInfo.adapterId = (CCDWrapper.LUID)readerModeAdapterID.Deserialize(xml);
modeInfo.infoType = (CCDWrapper.DisplayConfigModeInfoType)readerModeInfoType.Deserialize(xml);
if (modeInfo.infoType == CCDWrapper.DisplayConfigModeInfoType.Target)
{
modeInfo.targetMode = (CCDWrapper.DisplayConfigTargetMode)readerModeTarget.Deserialize(xml);
}
else
{
modeInfo.sourceMode = (CCDWrapper.DisplayConfigSourceMode)readerModeSource.Deserialize(xml);
}
modeInfoList.Add(modeInfo);
continue;
}
if (!xml.Read())
{
break;
}
}
// Convert C# lists to simply array
var pathInfoArray = new CCDWrapper.DisplayConfigPathInfo[pathInfoList.Count];
for (int iPathInfo = 0; iPathInfo < pathInfoList.Count; iPathInfo++)
{
pathInfoArray[iPathInfo] = pathInfoList[iPathInfo];
}
var modeInfoArray = new CCDWrapper.DisplayConfigModeInfo[modeInfoList.Count];
for (int iModeInfo = 0; iModeInfo < modeInfoList.Count; iModeInfo++)
{
modeInfoArray[iModeInfo] = modeInfoList[iModeInfo];
}
// Get current display settings
CCDWrapper.DisplayConfigPathInfo[] pathInfoArrayCurrent = new CCDWrapper.DisplayConfigPathInfo[0];
CCDWrapper.DisplayConfigModeInfo[] modeInfoArrayCurrent = new CCDWrapper.DisplayConfigModeInfo[0];
Boolean statusCurrent = GetDisplaySettings(ref pathInfoArrayCurrent, ref modeInfoArrayCurrent, false);
if (statusCurrent)
{
// For some reason the adapterID parameter changes upon system restart, all other parameters however, especially the ID remain constant.
// We check the loaded settings against the current settings replacing the adapaterID with the other parameters
for (int iPathInfo = 0; iPathInfo < pathInfoArray.Length; iPathInfo++)
{
for (int iPathInfoCurrent = 0; iPathInfoCurrent < pathInfoArrayCurrent.Length; iPathInfoCurrent++)
{
if ((pathInfoArray[iPathInfo].sourceInfo.id == pathInfoArrayCurrent[iPathInfoCurrent].sourceInfo.id) &&
(pathInfoArray[iPathInfo].targetInfo.id == pathInfoArrayCurrent[iPathInfoCurrent].targetInfo.id))
{
pathInfoArray[iPathInfo].sourceInfo.adapterId.LowPart = pathInfoArrayCurrent[iPathInfoCurrent].sourceInfo.adapterId.LowPart;
pathInfoArray[iPathInfo].targetInfo.adapterId.LowPart = pathInfoArrayCurrent[iPathInfoCurrent].targetInfo.adapterId.LowPart;
break;
}
}
}
// Same again for modeInfo, however we get the required adapterId information from the pathInfoArray
for (int iModeInfo = 0; iModeInfo < modeInfoArray.Length; iModeInfo++)
{
for (int iPathInfo = 0; iPathInfo < pathInfoArray.Length; iPathInfo++)
{
if ((modeInfoArray[iModeInfo].id == pathInfoArray[iPathInfo].targetInfo.id) &&
(modeInfoArray[iModeInfo].infoType == CCDWrapper.DisplayConfigModeInfoType.Target))
{
// We found target adapter id, now lets look for the source modeInfo and adapterID
for (int iModeInfoSource = 0; iModeInfoSource < modeInfoArray.Length; iModeInfoSource++)
{
if ((modeInfoArray[iModeInfoSource].id == pathInfoArray[iPathInfo].sourceInfo.id) &&
(modeInfoArray[iModeInfoSource].adapterId.LowPart == modeInfoArray[iModeInfo].adapterId.LowPart) &&
(modeInfoArray[iModeInfoSource].infoType == CCDWrapper.DisplayConfigModeInfoType.Source))
{
modeInfoArray[iModeInfoSource].adapterId.LowPart = pathInfoArray[iPathInfo].sourceInfo.adapterId.LowPart;
break;
}
}
modeInfoArray[iModeInfo].adapterId.LowPart = pathInfoArray[iPathInfo].targetInfo.adapterId.LowPart;
break;
}
}
}
// Set loaded display settings
uint numPathArrayElements = (uint)pathInfoArray.Length;
uint numModeInfoArrayElements = (uint)modeInfoArray.Length;
long status = CCDWrapper.SetDisplayConfig(numPathArrayElements, pathInfoArray, numModeInfoArrayElements, modeInfoArray,
CCDWrapper.SdcFlags.Apply | CCDWrapper.SdcFlags.UseSuppliedDisplayConfig | CCDWrapper.SdcFlags.SaveToDatabase | CCDWrapper.SdcFlags.AllowChanges);
if (status != 0)
{
Console.WriteLine("Failed to set display settings, ERROR: " + status.ToString());
return false;
}
xml.Close();
return true;
}
return false;
}
public static Boolean SaveDisplaySettings(String fileName)
{
CCDWrapper.DisplayConfigPathInfo[] pathInfoArray = new CCDWrapper.DisplayConfigPathInfo[0];
CCDWrapper.DisplayConfigModeInfo[] modeInfoArray = new CCDWrapper.DisplayConfigModeInfo[0];
Boolean status = GetDisplaySettings(ref pathInfoArray, ref modeInfoArray, true);
if (status)
{
System.Xml.Serialization.XmlSerializer writerPath = new System.Xml.Serialization.XmlSerializer(typeof(CCDWrapper.DisplayConfigPathInfo));
System.Xml.Serialization.XmlSerializer writerModeTarget = new System.Xml.Serialization.XmlSerializer(typeof(CCDWrapper.DisplayConfigTargetMode));
System.Xml.Serialization.XmlSerializer writerModeSource = new System.Xml.Serialization.XmlSerializer(typeof(CCDWrapper.DisplayConfigSourceMode));
System.Xml.Serialization.XmlSerializer writerModeInfoType = new System.Xml.Serialization.XmlSerializer(typeof(CCDWrapper.DisplayConfigModeInfoType));
System.Xml.Serialization.XmlSerializer writerModeAdapterID = new System.Xml.Serialization.XmlSerializer(typeof(CCDWrapper.LUID));
XmlWriter xml = XmlWriter.Create(fileName);
xml.WriteStartDocument();
xml.WriteStartElement("displaySettings");
xml.WriteStartElement("pathInfoArray");
foreach (CCDWrapper.DisplayConfigPathInfo pathInfo in pathInfoArray)
{
writerPath.Serialize(xml, pathInfo);
}
xml.WriteEndElement();
xml.WriteStartElement("modeInfoArray");
for (int iModeInfo = 0; iModeInfo < modeInfoArray.Length; iModeInfo++)
{
xml.WriteStartElement("modeInfo");
CCDWrapper.DisplayConfigModeInfo modeInfo = modeInfoArray[iModeInfo];
xml.WriteElementString("id", modeInfo.id.ToString());
writerModeAdapterID.Serialize(xml, modeInfo.adapterId);
writerModeInfoType.Serialize(xml, modeInfo.infoType);
if (modeInfo.infoType == CCDWrapper.DisplayConfigModeInfoType.Target)
{
writerModeTarget.Serialize(xml, modeInfo.targetMode);
}
else
{
writerModeSource.Serialize(xml, modeInfo.sourceMode);
}
xml.WriteEndElement();
}
xml.WriteEndElement();
xml.WriteEndElement();
xml.WriteEndDocument();
xml.Flush();
xml.Close();
return true;
}
else
{
Console.WriteLine("Failed to get display settings, ERROR: " + status.ToString());
}
return false;
}
