public static extern int HidP_GetCaps(IntPtr PreparsedData, ref USB.HIDP_CAPS Capabilities);
public static bool Find_This_Device(ushort p_VendorID, ushort p_PoductID, ushort p_index, ref IntPtr p_ReadHandle, ref IntPtr p_WriteHandle)
{
IntPtr deviceInfoSet = IntPtr.Zero;
IntPtr zero = IntPtr.Zero;
USB.HIDP_CAPS hIDP_CAPS = default(USB.HIDP_CAPS);
ushort num = 0;
IntPtr intPtr = IntPtr.Zero;
int num2 = 0;
USB.SECURITY_ATTRIBUTES sECURITY_ATTRIBUTES = default(USB.SECURITY_ATTRIBUTES);
IntPtr value = new IntPtr(-1);
byte[] array = new byte[64];
sECURITY_ATTRIBUTES.lpSecurityDescriptor = 0;
sECURITY_ATTRIBUTES.bInheritHandle = Convert.ToInt32(true);
sECURITY_ATTRIBUTES.nLength = Marshal.SizeOf(sECURITY_ATTRIBUTES);
Guid empty = Guid.Empty;
USB.SP_DEVICE_INTERFACE_DATA sP_DEVICE_INTERFACE_DATA;
sP_DEVICE_INTERFACE_DATA.cbSize = 0;
sP_DEVICE_INTERFACE_DATA.Flags = 0;
sP_DEVICE_INTERFACE_DATA.InterfaceClassGuid = Guid.Empty;
sP_DEVICE_INTERFACE_DATA.Reserved = 0;
USB.SP_DEVICE_INTERFACE_DETAIL_DATA sP_DEVICE_INTERFACE_DETAIL_DATA;
sP_DEVICE_INTERFACE_DETAIL_DATA.cbSize = 0;
sP_DEVICE_INTERFACE_DETAIL_DATA.DevicePath = "";
USB.HIDD_ATTRIBUTES hIDD_ATTRIBUTES;
hIDD_ATTRIBUTES.ProductID = 0;
hIDD_ATTRIBUTES.Size = 0;
hIDD_ATTRIBUTES.VendorID = 0;
hIDD_ATTRIBUTES.VersionNumber = 0;
bool result = false;
sECURITY_ATTRIBUTES.lpSecurityDescriptor = 0;
sECURITY_ATTRIBUTES.bInheritHandle = Convert.ToInt32(true);
sECURITY_ATTRIBUTES.nLength = Marshal.SizeOf(sECURITY_ATTRIBUTES);
USB.HidD_GetHidGuid(ref empty);
deviceInfoSet = USB.SetupDiGetClassDevs(ref empty, null, 0, 18);
sP_DEVICE_INTERFACE_DATA.cbSize = Marshal.SizeOf(sP_DEVICE_INTERFACE_DATA);
for (int i = 0; i < 20; i++)
{
int num3 = USB.SetupDiEnumDeviceInterfaces(deviceInfoSet, 0, ref empty, i, ref sP_DEVICE_INTERFACE_DATA);
if (num3 != 0)
{
USB.SetupDiGetDeviceInterfaceDetail(deviceInfoSet, ref sP_DEVICE_INTERFACE_DATA, IntPtr.Zero, 0, ref num2, IntPtr.Zero);
sP_DEVICE_INTERFACE_DETAIL_DATA.cbSize = Marshal.SizeOf(sP_DEVICE_INTERFACE_DETAIL_DATA);
IntPtr intPtr2 = Marshal.AllocHGlobal(num2);
Marshal.WriteInt32(intPtr2, 4 + Marshal.SystemDefaultCharSize);
USB.SetupDiGetDeviceInterfaceDetail(deviceInfoSet, ref sP_DEVICE_INTERFACE_DATA, intPtr2, num2, ref num2, IntPtr.Zero);
IntPtr ptr = new IntPtr(intPtr2.ToInt32() + 4);
string lpFileName = Marshal.PtrToStringAuto(ptr);
intPtr = USB.CreateFile(lpFileName, 3221225472u, 3u, ref sECURITY_ATTRIBUTES, 3, 0u, 0);
if (intPtr != value)
{
hIDD_ATTRIBUTES.Size = Marshal.SizeOf(hIDD_ATTRIBUTES);
num3 = USB.HidD_GetAttributes(intPtr, ref hIDD_ATTRIBUTES);
if (num3 != 0)
{
if (hIDD_ATTRIBUTES.VendorID == p_VendorID && hIDD_ATTRIBUTES.ProductID == p_PoductID)
{
if (num == p_index)
{
result = true;
USB.HidD_GetSerialNumberString(intPtr, array, 64uL);
if (array[0] == 9 || array[0] == 0)
{
USB.UnitID = "-";
}
else
{
int j;
for (j = 2; j < 28; j += 2)
{
array[j / 2] = array[j];
if (array[j] == 0 || array[j] == 224)
{
break;
}
array[j] = 0;
array[j + 1] = 0;
}
j /= 2;
char[] array2 = new char[Encoding.ASCII.GetCharCount(array, 0, j)];
Encoding.ASCII.GetChars(array, 0, j, array2, 0);
string unitID = new string(array2);
USB.UnitID = unitID;
}
p_WriteHandle = intPtr;
USB.HidD_GetPreparsedData(intPtr, ref zero);
USB.HidP_GetCaps(zero, ref hIDP_CAPS);
p_ReadHandle = USB.CreateFile(lpFileName, 3221225472u, 3u, ref sECURITY_ATTRIBUTES, 3, 0u, 0);
USB.HidD_FreePreparsedData(ref zero);
break;
}
USB.CloseHandle(intPtr);
num += 1;
}
else
{
result = false;
USB.CloseHandle(intPtr);
}
}
else
{
result = false;
USB.CloseHandle(intPtr);
}
}
}
}
USB.SetupDiDestroyDeviceInfoList(deviceInfoSet);
return(result);
}