private static DisplayInfoArrays GetDisplayConfigPathInfos(QueryDisplayFlags displayFlags)
{
var status = Wrapper.GetDisplayConfigBufferSizes(
displayFlags,
out var numPathArrayElements,
out var numModeInfoArrayElements);
if (status != StatusCode.Success)
{
var reason = $"GetDisplayConfigBufferSizesFailed() failed. Status: {status}";
throw new Exception(reason);
}
var pathInfoArray = new DisplayConfigPathInfo[numPathArrayElements];
var modeInfoArray = new DisplayConfigModeInfo[numModeInfoArrayElements];
var queryDisplayStatus = Wrapper.QueryDisplayConfig(
displayFlags,
ref numPathArrayElements,
pathInfoArray,
ref numModeInfoArrayElements, modeInfoArray);
if (queryDisplayStatus != StatusCode.Success)
{
var reason = $"QueryDisplayConfig() failed. Status: {queryDisplayStatus}";
throw new Exception(reason);
}
var infoArrays = new DisplayInfoArrays {
Paths = pathInfoArray, Modes = modeInfoArray
};
return(infoArrays);
}
public static extern int QueryDisplayConfig(
QueryDisplayFlags flags,
ref int numPathArrayElements,
[Out] DisplayConfigPathInfo[] pathInfoArray,
ref int modeInfoArrayElements,
[Out] DisplayConfigModeInfo[] modeInfoArray,
IntPtr z);
private void btnRotate_Click(object sender, EventArgs e)
{
DisplayConfigRotation displayConfigRotation = (DisplayConfigRotation)Enum.Parse(typeof(DisplayConfigRotation), comRotate.Text);
int numPathArrayElements;
int numModeInfoArrayElements;
const QueryDisplayFlags pathType = QueryDisplayFlags.OnlyActivePaths;
// query active paths from the current computer.
// note that 0 is equal to SUCCESS!
// TODO; HARDCODE MAGIC VALUES AWAY.
if (CCDWrapper.GetDisplayConfigBufferSizes(pathType, out numPathArrayElements,
out numModeInfoArrayElements) == 0)
{
var pathInfoArray = new DisplayConfigPathInfo[numPathArrayElements];
var modeInfoArray = new DisplayConfigModeInfo[numModeInfoArrayElements];
// TODO; FALLBACK MECHANISM THAT HANDLES DIFFERENT VALUES FOR ZERO.
if (CCDWrapper.QueryDisplayConfig(
pathType,
ref numPathArrayElements, pathInfoArray,
ref numModeInfoArrayElements,
modeInfoArray, IntPtr.Zero) == 0)
{
pathInfoArray[0].targetInfo.rotation = displayConfigRotation;
CCDWrapper.SetDisplayConfig(numPathArrayElements, pathInfoArray, numModeInfoArrayElements,
modeInfoArray, SdcFlags.Apply | SdcFlags.UseSuppliedDisplayConfig);
}
}
}
public static extern StatusCode QueryDisplayConfig(
QueryDisplayFlags flags,
ref int numPathArrayElements,
[Out] DisplayConfigPathInfo[] pathInfoArray,
ref int modeInfoArrayElements,
[Out] DisplayConfigModeInfo[] modeInfoArray,
out DisplayConfigTopologyId topologyId
);
public static extern StatusCode QueryDisplayConfig(
QueryDisplayFlags flags,
ref int numPathArrayElements,
[Out] DisplayConfigPathInfo[] pathInfoArray,
ref int modeInfoArrayElements,
[Out] DisplayConfigModeInfo[] modeInfoArray,
IntPtr topologyId = default(IntPtr)
);
private IEnumerable <DisplayConfigPathWrap> QueryDisplay(QueryDisplayFlags pathType, out DisplayConfigTopologyId topologyId)
{
topologyId = DisplayConfigTopologyId.Zero;
var status = Win32Api.GetDisplayConfigBufferSizes(
pathType,
out int numPathArrayElements,
out int numModeInfoArrayElements);
if (status != StatusCode.Success)
{
var reason = string.Format("GetDisplayConfigBufferSizesFailed() failed. Status: {0}", status);
throw new InvalidOperationException(reason);
}
var pathInfoArray = new DisplayConfigPathInfo[numPathArrayElements];
var modeInfoArray = new DisplayConfigModeInfo[numModeInfoArrayElements];
var queryDisplayStatus = pathType == QueryDisplayFlags.DatabaseCurrent ?
Win32Api.QueryDisplayConfig(pathType, ref numPathArrayElements, pathInfoArray, ref numModeInfoArrayElements, modeInfoArray, out topologyId) :
Win32Api.QueryDisplayConfig(pathType, ref numPathArrayElements, pathInfoArray, ref numModeInfoArrayElements, modeInfoArray);
if (queryDisplayStatus != StatusCode.Success)
{
var reason = string.Format("QueryDisplayConfig() failed. Status: {0}", queryDisplayStatus);
throw new InvalidOperationException(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);
}
public static DisplayConfigTopologyId GetCurrentMode(QueryDisplayFlags pathType = QueryDisplayFlags.DatabaseCurrent)
{
DisplayConfigTopologyId 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];
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);
}
return(topologyId);
}
public static DisplayConfiguration QueryDisplayConfig(QueryDisplayFlags flags)
{
int numPathArrayElements;
int numModeInfoArrayElements;
var queryErrorCode = User32.GetDisplayConfigBufferSizes(flags,
out numPathArrayElements, out numModeInfoArrayElements);
if (queryErrorCode == 0)
{
var pathInfoArray = new DisplayConfigPathInfo[numPathArrayElements];
var modeInfoArray = new DisplayConfigModeInfo[numModeInfoArrayElements];
queryErrorCode = User32.QueryDisplayConfig(flags,
ref numPathArrayElements, pathInfoArray,
ref numModeInfoArrayElements, modeInfoArray,
IntPtr.Zero);
return(queryErrorCode == 0 ? new DisplayConfiguration(pathInfoArray, modeInfoArray) : null);
}
return(null);
}
/// <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>
public static IEnumerable <DisplayConfigPathWrap> GetPathWraps(
QueryDisplayFlags pathType,
out DisplayConfigTopologyId topologyId)
{
topologyId = DisplayConfigTopologyId.Zero;
int numPathArrayElements;
int numModeInfoArrayElements;
var status = Wrapper.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
? Wrapper.QueryDisplayConfig(
pathType,
ref numPathArrayElements, pathInfoArray,
ref numModeInfoArrayElements, modeInfoArray, out topologyId)
: Wrapper.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 < modeInfoArray.Length)
{
outputModes.Add(modeInfoArray[modeIndex]);
}
}
list.Add(new DisplayConfigPathWrap(path, outputModes));
}
return(list);
}
public static extern int QueryDisplayConfig(QueryDisplayFlags flags, out uint numPathArrayElements, [Out] DisplayConfigPathInfo[] pathInfoArray, out uint modeInfoArrayElements, [Out] DisplayConfigModeInfo[] modeInfoArray, out DisplayConfigTopologyId id);
public static extern int GetDisplayConfigBufferSizes(QueryDisplayFlags flags, out uint numPathArrayElements, out uint numModeInfoArrayElements);
/// <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>
public static IEnumerable<DisplayConfigPathWrap> GetPathWraps(
QueryDisplayFlags pathType,
out DisplayConfigTopologyId topologyId)
{
topologyId = DisplayConfigTopologyId.Zero;
int numPathArrayElements;
int numModeInfoArrayElements;
var status = Wrapper.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
? Wrapper.QueryDisplayConfig(
pathType,
ref numPathArrayElements, pathInfoArray,
ref numModeInfoArrayElements, modeInfoArray, out topologyId)
: Wrapper.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 < modeInfoArray.Length)
outputModes.Add(modeInfoArray[modeIndex]);
}
list.Add(new DisplayConfigPathWrap(path, outputModes));
}
return list;
}
public static extern int QueryDisplayConfig( QueryDisplayFlags flags, out uint numPathArrayElements, [Out] DisplayConfigPathInfo[] pathInfoArray, out uint modeInfoArrayElements, [Out] DisplayConfigModeInfo[] modeInfoArray, out DisplayConfigTopologyId id );
public static extern int GetDisplayConfigBufferSizes( QueryDisplayFlags flags, out uint numPathArrayElements, out uint numModeInfoArrayElements );
static bool ShowConfig(QueryDisplayFlags flags) => SafeExecution(() =>
{
Console.WriteLine(Manager.QueryDisplayConfig(flags));
});
public static Tuple <List <DisplayConfigPathInfo>, List <DisplayConfigModeInfo> > GetDisplayConfig(QueryDisplayFlags flags)
{
while (true)
{
uint numPathArrayElements, numModeInfoArrayElements;
var err = GetDisplayConfigBufferSizes(flags, out numPathArrayElements, out numModeInfoArrayElements);
if (err != NO_ERROR)
{
throw Marshal.GetExceptionForHR(Win32ErrorToHResult(err));
}
var pathArray = new DisplayConfigPathInfo[numPathArrayElements];
var modeArray = new DisplayConfigModeInfo[numModeInfoArrayElements];
err = QueryDisplayConfig(flags, ref numPathArrayElements, pathArray, ref numModeInfoArrayElements, modeArray, IntPtr.Zero);
if (err == ERROR_INSUFICCIENT_BUFFER)
{
continue;
}
if (err != NO_ERROR)
{
throw Marshal.GetExceptionForHR(Win32ErrorToHResult(err));
}
return(Tuple.Create(pathArray.Take((int)numPathArrayElements).ToList(), modeArray.Take((int)numModeInfoArrayElements).ToList()));
}
}
