private static IEnumerable <string> EnumerateDevicePath(Guid guid)
{
var devicePathList = new List <string>();
var hDevInfo = SetupApi.SetupDiGetClassDevs(ref guid, IntPtr.Zero, IntPtr.Zero, SetupApi.DIGCF_PRESENT | SetupApi.DIGCF_DEVICEINTERFACE);
var spid = new SetupApi.SP_DEVICE_INTERFACE_DATA();
spid.cbSize = Marshal.SizeOf(spid);
int memberindex = 0;
while (SetupApi.SetupDiEnumDeviceInterfaces(hDevInfo, IntPtr.Zero, ref guid, memberindex, ref spid))
{
int bufferSize = 0;
SetupApi.SetupDiGetDeviceInterfaceDetail(hDevInfo, ref spid, IntPtr.Zero, 0, ref bufferSize, IntPtr.Zero);
var buffer = Marshal.AllocHGlobal(bufferSize);
Marshal.WriteInt32(buffer, (IntPtr.Size == 4) ? (4 + Marshal.SystemDefaultCharSize) : 8);
var da = new SetupApi.SP_DEVINFO_DATA();
da.cbSize = Marshal.SizeOf(da);
SetupApi.SetupDiGetDeviceInterfaceDetail(hDevInfo, ref spid, buffer, bufferSize, ref bufferSize, ref da);
IntPtr pDevicePathName = new IntPtr(buffer.ToInt64() + 4);
string pathName = Marshal.PtrToStringUni(pDevicePathName);
Marshal.FreeHGlobal(buffer);
buffer = IntPtr.Zero;
memberindex++;
Console.WriteLine(pathName);
devicePathList.Add(pathName);
}
return(devicePathList);
}
/// <summary>
/// Gets a list of <see cref="WinUsbRegistry"/> classes for the specified interface guid.
/// </summary>
/// <param name="deviceInterfaceGuid">The DeviceInterfaceGUID to search for.</param>
/// <param name="deviceRegistryList">A list of device paths associated with the <paramref name="deviceInterfaceGuid"/>.</param>
/// <returns>True of one or more device paths was found.</returns>
/// <remarks>
/// Each <see cref="WinUsbRegistry"/> in the <paramref name="deviceRegistryList"/> represents a seperate WinUSB device (interface).
/// </remarks>
public static bool GetWinUsbRegistryList(Guid deviceInterfaceGuid, out List <WinUsbRegistry> deviceRegistryList)
{
deviceRegistryList = new List <WinUsbRegistry>();
int devicePathIndex = 0;
SetupApi.SP_DEVICE_INTERFACE_DATA interfaceData = SetupApi.SP_DEVICE_INTERFACE_DATA.Empty;
SetupApi.DeviceInterfaceDetailHelper detailHelper;
SetupApi.SP_DEVINFO_DATA devInfoData = SetupApi.SP_DEVINFO_DATA.Empty;
// [1]
IntPtr deviceInfo = SetupApi.SetupDiGetClassDevs(ref deviceInterfaceGuid, null, IntPtr.Zero, SetupApi.DICFG.PRESENT | SetupApi.DICFG.DEVICEINTERFACE);
if (deviceInfo != IntPtr.Zero)
{
while ((SetupApi.SetupDiEnumDeviceInterfaces(deviceInfo, null, ref deviceInterfaceGuid, devicePathIndex, ref interfaceData)))
{
int length = 1024;
detailHelper = new SetupApi.DeviceInterfaceDetailHelper(length);
bool bResult = SetupApi.SetupDiGetDeviceInterfaceDetail(deviceInfo, ref interfaceData, detailHelper.Handle, length, out length, ref devInfoData);
if (bResult)
{
WinUsbRegistry regInfo = new WinUsbRegistry();
SetupApi.getSPDRPProperties(deviceInfo, ref devInfoData, regInfo.mDeviceProperties);
// Use the actual winusb device path for SYMBOLIC_NAME_KEY. This will be used to open the device.
regInfo.mDeviceProperties.Add(SYMBOLIC_NAME_KEY, detailHelper.DevicePath);
#if VERY_DEBUG
Debug.WriteLine(detailHelper.DevicePath);
#endif
regInfo.mDeviceInterfaceGuids = new Guid[] { deviceInterfaceGuid };
StringBuilder sbDeviceID = new StringBuilder(1024);
if (SetupApi.CM_Get_Device_ID(devInfoData.DevInst, sbDeviceID, sbDeviceID.Capacity, 0) == SetupApi.CR.SUCCESS)
{
regInfo.mDeviceProperties[DEVICE_ID_KEY] = sbDeviceID.ToString();
}
deviceRegistryList.Add(regInfo);
}
devicePathIndex++;
}
}
if (devicePathIndex == 0)
{
UsbError.Error(ErrorCode.Win32Error, Marshal.GetLastWin32Error(), "GetDevicePathList", typeof(SetupApi));
}
if (deviceInfo != IntPtr.Zero)
{
SetupApi.SetupDiDestroyDeviceInfoList(deviceInfo);
}
return(devicePathIndex > 0);
}
public IEnumerable <HidDeviceInfo> CollectInfo()
{
var result = new List <HidDeviceInfo>();
Guid hidGuid;
Hid.HidD_GetHidGuid(out hidGuid);
var deviceInfoList = SetupApi.SetupDiGetClassDevs(ref hidGuid, null, IntPtr.Zero,
Constants.DIGCF_DEVICEINTERFACE | Constants.DIGCF_PRESENT);
if (deviceInfoList != IntPtr.Zero && deviceInfoList != Constants.INVALID_HANDLE_VALUE)
{
var deviceInfo = new SetupApi.SP_DEVICE_INTERFACE_DATA();
deviceInfo.cbSize = Marshal.SizeOf(deviceInfo);
for (var i = 0; ; i++)
{
if (!SetupApi.SetupDiEnumDeviceInterfaces(deviceInfoList, 0, ref hidGuid, Convert.ToUInt32(i),
ref deviceInfo))
{
break;
}
var path = this.GetPath(deviceInfoList, deviceInfo);
var device = new HidDevice();
if (device.Open(path))
{
var attributes = device.GetAttributes();
var vendor = device.GetVendorString();
var product = device.GetProductString();
result.Add(new HidDeviceInfo(
path,
attributes.VendorID,
attributes.ProductID,
attributes.VersionString,
vendor,
product));
device.Close();
}
}
SetupApi.SetupDiDestroyDeviceInfoList(deviceInfoList);
}
return(result);
}
private string GetPath(IntPtr deviceInfoList, SetupApi.SP_DEVICE_INTERFACE_DATA deviceInfo)
{
var deviceInterfaceDetailData = IntPtr.Zero;
uint needed;
if (!SetupApi.SetupDiGetDeviceInterfaceDetail(deviceInfoList, ref deviceInfo,
IntPtr.Zero, 0,
out needed, IntPtr.Zero))
{
var error = Marshal.GetLastWin32Error();
if (error != 122)
{
return(string.Empty);
}
}
var spDeviceInterfaceData = new SetupApi.SP_DEVICE_INTERFACE_DATA();
spDeviceInterfaceData.cbSize = Marshal.SizeOf(spDeviceInterfaceData);
try {
deviceInterfaceDetailData = Marshal.AllocHGlobal((int)(8 + needed));
var size = IntPtr.Size == 8 ? 8 : 6;
Marshal.WriteInt32(deviceInterfaceDetailData, size);
if (!SetupApi.SetupDiGetDeviceInterfaceDetail(deviceInfoList, ref deviceInfo,
deviceInterfaceDetailData, needed, out needed, IntPtr.Zero))
{
var error = Marshal.GetLastWin32Error();
}
var pStr = IntPtr.Add(deviceInterfaceDetailData, sizeof(uint));
var path = Marshal.PtrToStringUni(pStr);
return(path);
} finally {
Marshal.FreeHGlobal(deviceInterfaceDetailData);
}
}
/// <summary>
/// Gets a list of WinUSB device paths for the specified interface guid.
/// </summary>
/// <param name="deviceInterfaceGuid">The DeviceInterfaceGUID to search for.</param>
/// <param name="devicePathList">A list of device paths associated with the <paramref name="deviceInterfaceGuid"/>.</param>
/// <returns>True of one or more device paths was found.</returns>
/// <remarks>
/// Each device path string in the <paramref name="devicePathList"/> represents a seperate WinUSB device (interface).
/// </remarks>
/// <seealso cref="GetWinUsbRegistryList"/>
public static bool GetDevicePathList(Guid deviceInterfaceGuid, out List <String> devicePathList)
{
devicePathList = new List <string>();
int devicePathIndex = 0;
SetupApi.SP_DEVICE_INTERFACE_DATA interfaceData = SetupApi.SP_DEVICE_INTERFACE_DATA.Empty;
SetupApi.DeviceInterfaceDetailHelper detailHelper;
IntPtr deviceInfo = SetupApi.SetupDiGetClassDevs(ref deviceInterfaceGuid, null, IntPtr.Zero, SetupApi.DICFG.PRESENT | SetupApi.DICFG.DEVICEINTERFACE);
if (deviceInfo != IntPtr.Zero)
{
while ((SetupApi.SetupDiEnumDeviceInterfaces(deviceInfo, null, ref deviceInterfaceGuid, devicePathIndex, ref interfaceData)))
{
int length = 1024;
detailHelper = new SetupApi.DeviceInterfaceDetailHelper(length);
bool bResult = SetupApi.SetupDiGetDeviceInterfaceDetail(deviceInfo, ref interfaceData, detailHelper.Handle, length, out length, null);
if (bResult)
{
devicePathList.Add(detailHelper.DevicePath);
}
devicePathIndex++;
}
}
if (devicePathIndex == 0)
{
UsbError.Error(ErrorCode.Win32Error, Marshal.GetLastWin32Error(), "GetDevicePathList", typeof(SetupApi));
}
if (deviceInfo != IntPtr.Zero)
{
SetupApi.SetupDiDestroyDeviceInfoList(deviceInfo);
}
return(devicePathIndex > 0);
}
