/// <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.DIGCF.PRESENT | SetupApi.DIGCF.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);
}
private static bool HidUsbRegistryCallBack(IntPtr DeviceInfoSet, int deviceIndex, ref SetupApi.SP_DEVINFO_DATA DeviceInfoData, object classEnumeratorCallbackParam1)
{
List<WinHidRegistry> deviceList = (List<WinHidRegistry>)classEnumeratorCallbackParam1;
Guid hid = GetHidGuid();
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 hid, null, IntPtr.Zero, SetupApi.DIGCF.PRESENT | SetupApi.DIGCF.DEVICEINTERFACE);
if (deviceInfo != IntPtr.Zero)
{
while ((SetupApi.SetupDiEnumDeviceInterfaces(deviceInfo, null, ref hid, 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)
{
WinHidRegistry regInfo = new WinHidRegistry();
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);
// Debug.WriteLine(detailHelper.DevicePath);
regInfo.mDeviceInterfaceGuids = new Guid[] { hid };
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();
}
deviceList.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);
}
