private static IEnumerable <SP_DEVICE_INTERFACE_DATA> SetupDiEnumDeviceInterfacesHelper(
SafeDeviceInfoSetHandle lpDeviceInfoSet,
SP_DEVINFO_DATA?deviceInfoData,
Guid interfaceClassGuid)
{
int index = 0;
while (true)
{
var data = SP_DEVICE_INTERFACE_DATA.Create();
bool result = SetupDiEnumDeviceInterfaces(
lpDeviceInfoSet,
deviceInfoData,
ref interfaceClassGuid,
index,
ref data);
if (!result)
{
var lastError = GetLastError();
if (lastError != Win32ErrorCode.ERROR_NO_MORE_ITEMS)
{
throw new Win32Exception(lastError);
}
yield break;
}
yield return(data);
index++;
}
}
/// <summary>
/// 获取 HID 设备路径列表
/// </summary>
/// <returns></returns>
public static string[] GetHIDDevicesPath()
{
Guid HidGuid = Guid.Empty;
HID.HidD_GetHidGuid(ref HidGuid);
List <string> deviceList = new List <string>(64);
IntPtr HidInfoSet = SetupAPI.SetupAPI.SetupDiGetClassDevs(ref HidGuid, IntPtr.Zero, IntPtr.Zero, DIGCF.PRESENT | DIGCF.DEVICEINTERFACE);
if (HidInfoSet == IntPtr.Zero)
{
return(deviceList.ToArray());
}
bool hasNext;
int index = 0;
SP_DEVICE_INTERFACE_DATA interfaceInfo = SP_DEVICE_INTERFACE_DATA.Create();
do
{
hasNext = SetupAPI.SetupAPI.SetupDiEnumDeviceInterfaces(HidInfoSet, IntPtr.Zero, ref HidGuid, index, ref interfaceInfo);
if (hasNext)
{
int bufferSize = 0;
SetupAPI.SetupAPI.SetupDiGetDeviceInterfaceDetail(HidInfoSet, ref interfaceInfo, IntPtr.Zero, bufferSize, ref bufferSize, IntPtr.Zero);
IntPtr pDetail = Marshal.AllocHGlobal(bufferSize);
Marshal.WriteInt32(pDetail, (IntPtr.Size == 4) ? (Marshal.SystemDefaultCharSize + 4) : 8);
var result = SetupAPI.SetupAPI.SetupDiGetDeviceInterfaceDetail(HidInfoSet, ref interfaceInfo, pDetail, bufferSize, ref bufferSize, IntPtr.Zero);
if (result)
{
IntPtr ptr = new IntPtr(pDetail.ToInt32() + 4);
deviceList.Add(Marshal.PtrToStringAuto(ptr));
//Console.WriteLine(Marshal.PtrToStringAuto(ptr));
Marshal.FreeHGlobal(pDetail);
}
index++;
}
}while (hasNext);
SetupAPI.SetupAPI.SetupDiDestroyDeviceInfoList(HidInfoSet);
return(deviceList.ToArray());
}