public static List <string> GetAllDevicePaths(Guid guid, GetClassFlags flags)
{
List <string> list = new List <string>();
IntPtr devInfo = NativeMethods.SetupDiGetClassDevs(ref guid, null, IntPtr.Zero, flags); //GetClassFlags.Present | GetClassFlags.DeviceInterface);
if (devInfo == new IntPtr(-1))
{
return(list);
}
SetupDeviceInterfaceData devIface = new SetupDeviceInterfaceData();
IntPtr devDetails;
int index = 0;
while (true)
{
devIface.cbSize = Marshal.SizeOf(typeof(SetupDeviceInterfaceData));
if (!NativeMethods.SetupDiEnumDeviceInterfaces(devInfo, IntPtr.Zero, ref guid, index, ref devIface))
{
NativeMethods.SetupDiDestroyDeviceInfoList(devInfo);
devInfo = IntPtr.Zero;
return(list);
}
else if (Marshal.GetLastWin32Error() == 259) //ERROR_NO_MORE_ITEMS
{
break;
}
index++;
int detailsSize = 0;
NativeMethods.SetupDiGetDeviceInterfaceDetail(devInfo, ref devIface, IntPtr.Zero, 0, ref detailsSize, IntPtr.Zero);
devDetails = Marshal.AllocHGlobal(detailsSize);
Marshal.WriteInt32(devDetails, Marshal.OffsetOf <SetupDeviceInterfaceDetailData>(nameof(SetupDeviceInterfaceDetailData.cbSize)).ToInt32(), Marshal.SizeOf <SetupDeviceInterfaceDetailData>());
NativeMethods.SetupDiGetDeviceInterfaceDetail(devInfo, ref devIface, devDetails, detailsSize, IntPtr.Zero, IntPtr.Zero);
string val = Marshal.PtrToStringAuto(new IntPtr(devDetails.ToInt64() + Marshal.OffsetOf <SetupDeviceInterfaceDetailData>(nameof(SetupDeviceInterfaceDetailData.DevicePath)).ToInt64()));
list.Add(val);
Marshal.FreeHGlobal(devDetails);
}
return(list);
}
internal static extern bool SetupDiGetDeviceInterfaceDetail(IntPtr DeviceInfoSet, ref SetupDeviceInterfaceData DeviceInterfaceData, IntPtr DeviceInterfaceDetailData, int DeviceInterfaceDetailDataSize, IntPtr RequiredSize, IntPtr DeviceInfoData);
internal static extern bool SetupDiEnumDeviceInterfaces(IntPtr DeviceInfoSet, IntPtr DeviceInfoData, ref Guid InterfaceClassGuid, int MemberIndex, ref SetupDeviceInterfaceData DeviceInterfaceData);
