internal static extern bool SetupDiGetDeviceInterfaceDetail(
SafeDevInfoHandle deviceInfoSet,
[MarshalAs(UnmanagedType.LPStruct), In] SP_DEVICE_INTERFACE_DATA deviceInterfaceData,
[MarshalAs(UnmanagedType.LPStruct), In, Out] SP_DEVICE_INTERFACE_DETAIL_DATA deviceInterfaceDetailData,
int deviceInterfaceDetailDataSize,
ref int requiredSize,
IntPtr deviceInfoData);
private string GetBusReportedDeviceDescription(SafeDevInfoHandle deviceInfoSet, SP_DEVINFO_DATA devinfoData)
{
var descriptionBuffer = new byte[1024];
string resultString = string.Empty;
if (Environment.OSVersion.Version.Major > 5)
{
ulong propertyType = 0;
var requiredSize = 0;
var devPropKey = new DEVPROPKEY();
var result = NativeMethods.SetupDiGetDeviceProperty(
deviceInfoSet,
devinfoData,
devPropKey,
ref propertyType,
descriptionBuffer,
descriptionBuffer.Length,
ref requiredSize,
0);
if (result)
{
resultString = DescriptionEncoding.GetString(descriptionBuffer).TrimEnd('\0');
}
}
return(resultString);
}
internal static extern bool SetupDiGetDeviceRegistryProperty(
SafeDevInfoHandle deviceInfoSet,
[MarshalAs(UnmanagedType.LPStruct), In] SP_DEVINFO_DATA deviceInfoData,
int propertyVal,
ref int propertyRegDataType,
byte[] propertyBuffer,
int propertyBufferSize,
ref int requiredSize);
internal static extern bool SetupDiGetDeviceProperty(
SafeDevInfoHandle deviceInfo,
[MarshalAs(UnmanagedType.LPStruct), In] SP_DEVINFO_DATA deviceInfoData,
[MarshalAs(UnmanagedType.LPStruct), In] DEVPROPKEY propkey,
ref ulong propertyDataType,
byte[] propertyBuffer,
int propertyBufferSize,
ref int requiredSize,
uint flags);
private string GetDevicePath(SafeDevInfoHandle deviceInfoSet, SP_DEVICE_INTERFACE_DATA deviceInterfaceData)
{
var bufferSize = 0;
var interfaceDetail = new SP_DEVICE_INTERFACE_DETAIL_DATA();
NativeMethods.SetupDiGetDeviceInterfaceDetailBuffer(deviceInfoSet, deviceInterfaceData, IntPtr.Zero, 0, ref bufferSize, IntPtr.Zero);
bool result = NativeMethods.SetupDiGetDeviceInterfaceDetail(deviceInfoSet, deviceInterfaceData,
interfaceDetail, bufferSize, ref bufferSize, IntPtr.Zero);
if (result && interfaceDetail.DevicePath != null)
{
return(interfaceDetail.DevicePath);
}
return(string.Empty);
}
public IEnumerable <IHidDeviceInfo> EnumerateDeviceInfo()
{
var hidClass = HidClassGuid;
using SafeDevInfoHandle deviceInfoSet = NativeMethods.SetupDiGetClassDevs(hidClass, null, IntPtr.Zero, NativeMethods.DIGCF_PRESENT | NativeMethods.DIGCF_DEVICEINTERFACE);
if (deviceInfoSet.IsInvalid)
{
yield break;
}
SP_DEVINFO_DATA deviceInfoData = new SP_DEVINFO_DATA();
int deviceIndex = 0;
while (NativeMethods.SetupDiEnumDeviceInfo(deviceInfoSet, deviceIndex, deviceInfoData))
{
deviceIndex += 1;
SP_DEVICE_INTERFACE_DATA deviceInterfaceData = new SP_DEVICE_INTERFACE_DATA();
int deviceInterfaceIndex = 0;
while (NativeMethods.SetupDiEnumDeviceInterfaces(deviceInfoSet, deviceInfoData, hidClass, deviceInterfaceIndex, deviceInterfaceData))
{
deviceInterfaceIndex++;
string devicePath = GetDevicePath(deviceInfoSet, deviceInterfaceData);
string busReportedDeviceDescription = GetBusReportedDeviceDescription(deviceInfoSet, deviceInfoData);
string deviceDescription = GetDeviceDescription(deviceInfoSet, deviceInfoData);
string description = string.IsNullOrEmpty(busReportedDeviceDescription) ? deviceDescription : busReportedDeviceDescription;
IHidDeviceInfo?info = null;
try
{
info = new HidDeviceInfo(devicePath, description);
}
catch (GetHidAttributesException)
{
//Console.WriteLine("GetHidCapabilitiesException");
}
catch (GetHidCapabilitiesException) { }
if (info != null)
{
yield return(info);
}
}
}
}
private string GetDeviceDescription(SafeDevInfoHandle deviceInfoSet, SP_DEVINFO_DATA devinfoData)
{
var descriptionBuffer = new byte[1024];
string resultString = string.Empty;
var requiredSize = 0;
var type = 0;
var result = NativeMethods.SetupDiGetDeviceRegistryProperty(
deviceInfoSet,
devinfoData,
NativeMethods.SPDRP_DEVICEDESC,
ref type,
descriptionBuffer,
descriptionBuffer.Length,
ref requiredSize);
if (result)
{
Encoding.GetEncodings();
resultString = DescriptionEncoding.GetString(descriptionBuffer).TrimEnd('\0');
}
return(resultString);
}
internal static extern bool SetupDiEnumDeviceInterfaces(
SafeDevInfoHandle deviceInfoSet,
[MarshalAs(UnmanagedType.LPStruct), In] SP_DEVINFO_DATA deviceInfoData,
[MarshalAs(UnmanagedType.LPStruct), In] Guid interfaceClassGuid,
int memberIndex,
[MarshalAs(UnmanagedType.LPStruct), In] SP_DEVICE_INTERFACE_DATA deviceInterfaceData);
internal static extern bool SetupDiEnumDeviceInfo(SafeDevInfoHandle deviceInfoSet, int memberIndex, [MarshalAs(UnmanagedType.LPStruct), In] SP_DEVINFO_DATA deviceInfoData);
