private static List <HidDevice.DeviceData> PopulateDeviceList(int vendorId, int productId)
{
SafeFileHandle safeFileHandle = (SafeFileHandle)null;
List <HidDevice.DeviceData> list = new List <HidDevice.DeviceData>();
Guid gHid;
SemtechLib.Devices.Common.NativeMethods.HidD_GetHidGuid(out gHid);
IntPtr classDevs = SemtechLib.Devices.Common.NativeMethods.SetupDiGetClassDevs(ref gHid, IntPtr.Zero, IntPtr.Zero, 18);
string vid_pid = string.Format((IFormatProvider)CultureInfo.InvariantCulture,
"vid_{0:x4}&pid_{1:x4}",
vendorId,
productId
);
try
{
SemtechLib.Devices.Common.NativeMethods.SP_DEVICE_INTERFACE_DATA deviceInterfaceData = new SemtechLib.Devices.Common.NativeMethods.SP_DEVICE_INTERFACE_DATA();
deviceInterfaceData.cbSize = Marshal.SizeOf(deviceInterfaceData);
int deviceIndex = 0;
while (SemtechLib.Devices.Common.NativeMethods.SetupDiEnumDeviceInterfaces(classDevs, IntPtr.Zero, ref gHid, deviceIndex++, ref deviceInterfaceData))
{ // Scan device path for VIS/PID
string devicePath = HidDevice.GetDevicePath(classDevs, ref deviceInterfaceData);
if (devicePath.IndexOf(vid_pid) >= 0)
{
if (safeFileHandle != null)
{
safeFileHandle.Close();
}
safeFileHandle = SemtechLib.Devices.Common.NativeMethods.CreateFile(devicePath, -1073741824, 0, IntPtr.Zero, 3, 0, IntPtr.Zero);
if (Marshal.GetLastWin32Error() == 0)
{
StringBuilder lpBuffer = new StringBuilder();
if (SemtechLib.Devices.Common.NativeMethods.HidD_GetManufacturerString(safeFileHandle, lpBuffer, 255))
{
StringBuilder lpbuffer = new StringBuilder();
if (SemtechLib.Devices.Common.NativeMethods.HidD_GetProductString(safeFileHandle, lpbuffer, 255))
{
list.Add(new HidDevice.DeviceData(devicePath, lpBuffer.ToString(), lpbuffer.ToString()));
}
}
}
}
}
return(list);
}
finally
{
if (safeFileHandle != null)
{
safeFileHandle.Close();
}
SemtechLib.Devices.Common.NativeMethods.SetupDiDestroyDeviceInfoList(classDevs);
}
}
private static string GetDevicePath(IntPtr DeviceInfoTable, ref SemtechLib.Devices.Common.NativeMethods.SP_DEVICE_INTERFACE_DATA InterfaceDataStructure)
{
int RequiredSize = 0;
SemtechLib.Devices.Common.NativeMethods.SP_DEVICE_INTERFACE_DETAIL_DATA interfaceDetailData = new SemtechLib.Devices.Common.NativeMethods.SP_DEVICE_INTERFACE_DETAIL_DATA();
interfaceDetailData.cbSize = Marshal.SizeOf(interfaceDetailData);
SemtechLib.Devices.Common.NativeMethods.SetupDiGetDeviceInterfaceDetail(DeviceInfoTable, ref InterfaceDataStructure, IntPtr.Zero, 0, ref RequiredSize, IntPtr.Zero);
IntPtr hDevice = Marshal.AllocHGlobal(RequiredSize);
interfaceDetailData.cbSize = IntPtr.Size != 8 ? 4 + Marshal.SystemDefaultCharSize : 8;
Marshal.StructureToPtr(interfaceDetailData, hDevice, false);
if (SemtechLib.Devices.Common.NativeMethods.SetupDiGetDeviceInterfaceDetail(DeviceInfoTable, ref InterfaceDataStructure, hDevice, RequiredSize, IntPtr.Zero, IntPtr.Zero))
{
string devicePath = Marshal.PtrToStringUni(new IntPtr(hDevice.ToInt32() + 4));
Marshal.FreeHGlobal(hDevice);
return(devicePath);
}
Marshal.FreeHGlobal(hDevice);
return(string.Empty);
}
private static List<HidDevice.DeviceData> PopulateDeviceList(int vendorId, int productId)
{
SafeFileHandle safeFileHandle = (SafeFileHandle)null;
List<HidDevice.DeviceData> list = new List<HidDevice.DeviceData>();
Guid gHid;
SemtechLib.Devices.Common.NativeMethods.HidD_GetHidGuid(out gHid);
IntPtr classDevs = SemtechLib.Devices.Common.NativeMethods.SetupDiGetClassDevs(ref gHid, IntPtr.Zero, IntPtr.Zero, 18);
string vid_pid = string.Format((IFormatProvider)CultureInfo.InvariantCulture,
"vid_{0:x4}&pid_{1:x4}",
vendorId,
productId
);
try
{
SemtechLib.Devices.Common.NativeMethods.SP_DEVICE_INTERFACE_DATA deviceInterfaceData = new SemtechLib.Devices.Common.NativeMethods.SP_DEVICE_INTERFACE_DATA();
deviceInterfaceData.cbSize = Marshal.SizeOf(deviceInterfaceData);
int deviceIndex = 0;
while (SemtechLib.Devices.Common.NativeMethods.SetupDiEnumDeviceInterfaces(classDevs, IntPtr.Zero, ref gHid, deviceIndex++, ref deviceInterfaceData))
{ // Scan device path for VIS/PID
string devicePath = HidDevice.GetDevicePath(classDevs, ref deviceInterfaceData);
if (devicePath.IndexOf(vid_pid) >= 0)
{
if (safeFileHandle != null)
safeFileHandle.Close();
safeFileHandle = SemtechLib.Devices.Common.NativeMethods.CreateFile(devicePath, -1073741824, 0, IntPtr.Zero, 3, 0, IntPtr.Zero);
if (Marshal.GetLastWin32Error() == 0)
{
StringBuilder lpBuffer = new StringBuilder();
if (SemtechLib.Devices.Common.NativeMethods.HidD_GetManufacturerString(safeFileHandle, lpBuffer, 255))
{
StringBuilder lpbuffer = new StringBuilder();
if (SemtechLib.Devices.Common.NativeMethods.HidD_GetProductString(safeFileHandle, lpbuffer, 255))
list.Add(new HidDevice.DeviceData(devicePath, lpBuffer.ToString(), lpbuffer.ToString()));
}
}
}
}
return list;
}
finally
{
if (safeFileHandle != null)
safeFileHandle.Close();
SemtechLib.Devices.Common.NativeMethods.SetupDiDestroyDeviceInfoList(classDevs);
}
}
