private bool FindRockey4ND(int pos, ref int count, ref string OutPath)
{
int hardwareDeviceInfo;
SP_INTERFACE_DEVICE_DATA DeviceInfoData = new SP_INTERFACE_DEVICE_DATA();
int i;
GUID HidGuid = new GUID();
SP_DEVICE_INTERFACE_DETAIL_DATA functionClassDeviceData = new SP_DEVICE_INTERFACE_DETAIL_DATA();
int requiredLength;
int d_handle;
HIDD_ATTRIBUTES Attributes = new HIDD_ATTRIBUTES();
i = 0;
HidD_GetHidGuid(ref HidGuid);
hardwareDeviceInfo = SetupDiGetClassDevsA(ref HidGuid, 0, 0, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
if (hardwareDeviceInfo == INVALID_HANDLE_VALUE) return false;
DeviceInfoData.cbSize = Marshal.SizeOf(DeviceInfoData);
while (SetupDiEnumDeviceInterfaces(hardwareDeviceInfo, 0, ref HidGuid, i, ref DeviceInfoData))
{
if (GetLastError() == ERROR_NO_MORE_ITEMS) break;
functionClassDeviceData.cbSize = Marshal.SizeOf(functionClassDeviceData) - 255;// 5;
requiredLength = 0;
if (!SetupDiGetDeviceInterfaceDetailA(hardwareDeviceInfo, ref DeviceInfoData, ref functionClassDeviceData, 300, ref requiredLength, 0))
{
SetupDiDestroyDeviceInfoList(hardwareDeviceInfo);
return false;
}
OutPath = ByteConvertString(functionClassDeviceData.DevicePath);
d_handle = CreateFile(OutPath, 0, FILE_SHARE_READ | FILE_SHARE_WRITE, 0, OPEN_EXISTING, 0, 0);
if (INVALID_HANDLE_VALUE != d_handle)
{
if (HidD_GetAttributes(d_handle, ref Attributes))
{
if ((Attributes.ProductID == PID) && (Attributes.VendorID == VID))
{
if (pos == count)
{
SetupDiDestroyDeviceInfoList(hardwareDeviceInfo);
CloseHandle(d_handle);
return true;
}
count = count + 1;
}
}
CloseHandle(d_handle);
}
i = i + 1;
}
SetupDiDestroyDeviceInfoList(hardwareDeviceInfo);
return false;
}
private static extern int SetupDiGetClassDevsA(ref GUID ClassGuid, int Enumerator, int hwndParent, int Flags);
private static extern bool SetupDiEnumDeviceInterfaces(int DeviceInfoSet, int DeviceInfoData, ref GUID InterfaceClassGuid, int MemberIndex, ref SP_INTERFACE_DEVICE_DATA DeviceInterfaceData);
private static extern int HidD_GetHidGuid(ref GUID HidGuid);