private static string SetupDiGetDeviceProperty(IntPtr deviceInfoSet, ref SpDevInfoData deviceInfoData, DevPropKey propertyKey)
{
var localPropertyKey = propertyKey;
uint propertyType;
var buffer = new byte[0];
uint requiredSize;
// First call retrieves the necessary buffer size
SetupDiGetDeviceProperty(deviceInfoSet, ref deviceInfoData, ref localPropertyKey, out propertyType, buffer, (uint)buffer.Length, out requiredSize, 0);
var err = Marshal.GetLastWin32Error();
if (err != ERROR_INSUFICCIENT_BUFFER)
{
throw Marshal.GetExceptionForHR(Win32ErrorToHResult(err));
}
buffer = new byte[requiredSize];
if (!SetupDiGetDeviceProperty(deviceInfoSet, ref deviceInfoData, ref localPropertyKey, out propertyType, buffer, (uint)buffer.Length, out requiredSize, 0))
{
throw Marshal.GetExceptionForHR(Marshal.GetHRForLastWin32Error());
}
// We only understand strings.
if (propertyType != DEVPROP_TYPE_STRING)
{
throw new NotSupportedException("Unknown property type " + propertyType);
}
return(Encoding.Unicode.GetString(buffer).TrimEnd('\0'));
}
void GetSizeForDisplayDevices(List <Models.Monitor> monitors, CancellationToken token)
{
IntPtr devInfo = _nativeMethods.SetupDiGetClassDevsEx(new[] { NativeConstants.MonitorClassId }, null,
IntPtr.Zero, NativeConstants.DIGCF_PRESENT | NativeConstants.DIGCF_PROFILE, IntPtr.Zero, null,
IntPtr.Zero);
if (devInfo == IntPtr.Zero)
{
return;
}
for (uint i = 0; ShouldDisplayDeviceLoopContinue(token); ++i)
{
var devInfoData = new SpDevInfoData {
Size = (uint)_marshal.SizeOf <SpDevInfoData>()
};
if (!_nativeMethods.SetupDiEnumDeviceInfo(devInfo, i, ref devInfoData))
{
continue;
}
var instanceId = new char[NativeConstants.MAX_PATH];
if (!_nativeMethods.SetupDiGetDeviceInstanceId(devInfo, ref devInfoData, instanceId,
NativeConstants.MAX_PATH, IntPtr.Zero))
{
continue;
}
var instanceIdSize = Array.IndexOf(instanceId, '\0');
var instanceIdString =
new string(instanceId, 0, instanceIdSize > 0 ? instanceIdSize : instanceId.Length);
var monitor = monitors.Find(m => instanceIdString.Contains(Helpers.GetDeviceId(m.Id)));
if (monitor == null)
{
continue;
}
IntPtr edidRegKey = _nativeMethods.SetupDiOpenDevRegKey(devInfo, ref devInfoData,
NativeConstants.DICS_FLAG_GLOBAL, 0, NativeConstants.DIREG_DEV, NativeConstants.KEY_READ);
if (edidRegKey != NativeConstants.INVALID_HANDLE_VALUE)
{
var edid = GetMonitorEdidFromRegistry(edidRegKey);
if (edid.Length > 0)
{
monitor.Edid = _edidFactory.Create(edid);
monitor.Dimensions = Helpers.GetMonitorSizeFromEdid(edid);
}
}
_nativeMethods.RegCloseKey(edidRegKey);
}
_nativeMethods.SetupDiDestroyDeviceInfoList(devInfo);
}
public static extern bool SetupDiGetDeviceProperty([In] IntPtr deviceInfoSet,
[In, Out] ref SpDevInfoData deviceInfoData,
[In, Out] ref DevPropKey propertyKey,
[Out] out int propertyType,
[In, Out] IntPtr propertyBuffer,
[In] int propertyBufferSize,
[Out] out int requiredSize,
[In, Optional] int flags);
private static void SetupDiEnumDeviceInfo(IntPtr deviceInfoSet, out SpDevInfoData deviceInfoData)
{
// This wrapper only enumerates the first device in the device info set.
deviceInfoData = new SpDevInfoData {
cbSize = (uint)Marshal.SizeOf(typeof(SpDevInfoData))
};
if (!SetupDiEnumDeviceInfo(deviceInfoSet, 0, ref deviceInfoData))
{
throw Marshal.GetExceptionForHR(Marshal.GetHRForLastWin32Error());
}
}
public static extern IntPtr SetupDiOpenDevRegKey(IntPtr hDeviceInfoSet, SpDevInfoData deviceInfoData, uint scope,
uint hwProfile, uint parameterRegistryValueKind, uint samDesired);
public static extern bool SetupDiSetDeviceRegistryProperty(IntPtr deviceInfoSet, SpDevInfoData devInfoData,
int property, byte[] propertyBuffer, int propertyBufferSize);
public static extern bool SetupDiEnumDeviceInterfaces(IntPtr deviceInfoSet, SpDevInfoData deviceInfoData,
ref Guid interfaceClassGuid, uint memberIndex, SpDeviceInterfaceData deviceInterfaceData);
public static extern bool SetupDiEnumDeviceInfo(IntPtr deviceInfoSet, uint memberIndex, SpDevInfoData deviceInfoData);
internal static extern IntPtr SetupDiOpenDevRegKey(IntPtr deviceInfoSet,
ref SpDevInfoData deviceInfoData,
uint scope,
uint hwProfile,
uint keyType,
uint samDesired);
public static extern bool SetupDiGetDeviceInstanceId(IntPtr deviceInfoSet, SpDevInfoData devInfoData,
[Out] byte[] deviceInstanceIdBuffer, int deviceInstanceIdSize, out int requiredSize);
public static extern bool SetupDiEnumDeviceInfo([In] IntPtr deviceInfoSet,
[In] int memberIndex,
[In, Out] ref SpDevInfoData deviceInfoData);
public IntPtr SetupDiOpenDevRegKey(IntPtr deviceInfoSet, ref SpDevInfoData deviceInfoData, uint scope, uint hwProfile,
uint keyType, uint samDesired)
{
return(NativeMethods.SetupDiOpenDevRegKey(deviceInfoSet, ref deviceInfoData, scope, hwProfile, keyType, samDesired));
}
public bool SetupDiGetDeviceInstanceId(IntPtr deviceInfoSet, ref SpDevInfoData deviceInfoData, char[] deviceInstanceId,
uint deviceInstanceIdSize, IntPtr requiredSize)
{
return(NativeMethods.SetupDiGetDeviceInstanceId(deviceInfoSet, ref deviceInfoData, deviceInstanceId, deviceInstanceIdSize,
requiredSize));
}
public bool SetupDiEnumDeviceInfo(IntPtr deviceInfoSet, uint memberIndex, ref SpDevInfoData deviceInfoData)
{
return(NativeMethods.SetupDiEnumDeviceInfo(deviceInfoSet, memberIndex, ref deviceInfoData));
}
private static extern bool SetupDiGetDeviceProperty(IntPtr deviceInfoSet, [In] ref SpDevInfoData deviceInfoData, [In] ref DevPropKey propertyKey, out uint propertyType,
[MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 5)][Out] byte[] buffer, uint bufferSize, out uint requiredSize, uint flags);
public static extern bool SetupDiGetDeviceRegistryProperty(IntPtr deviceInfoSet, SpDevInfoData devInfoData,
int property, out int regDataType, [Out] byte[] propertyBuffer, int propertyBufferSize, out int requiredSize);
public static extern bool SetupDiGetDeviceRegistryProperty(IntPtr deviceInfoSet, SpDevInfoData deviceInfoData,
uint property, uint propertyRegDataType, StringBuilder propertyBuffer, uint propertyBufferSize, out uint requiredSize);
public static extern bool SetupDiEnumDeviceInfo(SafeDeviceInfoSetHandle DeviceInfoSet, uint MemberIndex, ref SpDevInfoData DeviceInfoData);
internal static extern bool SetupDiGetDeviceInstanceId(IntPtr deviceInfoSet,
ref SpDevInfoData deviceInfoData,
char[] deviceInstanceId,
uint deviceInstanceIdSize,
IntPtr requiredSize);
private static extern bool SetupDiEnumDeviceInfo(IntPtr deviceInfoSet, uint memberIndex, ref SpDevInfoData deviceInfoData);
