private IntPtr OpenDeviceHandle(Guid pGuid, BasicParm._PIPE_TYPE pipe_type, uint ui_deviceNum, bool buseAsyncIo)
{
IntPtr hDev;
//g_bUseAsyncIo = buseAsyncIo;
IntPtr hdinfo = GeneralAPI.SetupDiGetClassDevs(ref pGuid, 0, IntPtr.Zero, GeneralAPI.DIGCF_DEVICEINTERFACE | GeneralAPI.DIGCF_PRESENT);
if (hdinfo.ToInt32() == GeneralAPI.INVALID_HANDLE_VALUE)
{
return IntPtr.Zero;
//throw new Exception("Invalid Handle!");
}
GeneralAPI.SP_DEVINFO_DATA deviceInfoData = new GeneralAPI.SP_DEVINFO_DATA();
//deviceInfoData.cbSize = Marshal.SizeOf(deviceInfoData);//28=16+4+4+4
//deviceInfoData.devInst = 0;
//deviceInfoData.classGuid = System.Guid.Empty;
//deviceInfoData.reserved = 0;
GeneralAPI.SP_DEVICE_INTERFACE_DATA deviceInterfaceData = new GeneralAPI.SP_DEVICE_INTERFACE_DATA();
deviceInterfaceData.cbSize = Marshal.SizeOf(deviceInterfaceData);
deviceInterfaceData.flags = 0;
deviceInterfaceData.interfaceclassGuid = System.Guid.Empty;
deviceInterfaceData.reserved = 0;
// see if the device with the corresponding DeviceNumber is present
//if(!GeneralAPI.SetupDiEnumDeviceInfo(hdinfo, 0, deviceInfoData))
if (!GeneralAPI.SetupDiEnumDeviceInterfaces(hdinfo, IntPtr.Zero, ref pGuid, ui_deviceNum, ref deviceInterfaceData))
{
GeneralAPI.SetupDiDestroyDeviceInfoList(hdinfo);
return IntPtr.Zero;
}
int dwDeviceSize = 0;
bool result = GeneralAPI.SetupDiGetDeviceInterfaceDetail(hdinfo, ref deviceInterfaceData, IntPtr.Zero, 0, ref dwDeviceSize, deviceInfoData);
dwDeviceSize += 32;
IntPtr detailDataBuffer = Marshal.AllocHGlobal(dwDeviceSize);
if (detailDataBuffer == IntPtr.Zero)
{
GeneralAPI.SetupDiDestroyDeviceInfoList(hdinfo);
return IntPtr.Zero;
}
GeneralAPI.SP_INTERFACE_DEVICE_DETAIL_DATA detailData = new GeneralAPI.SP_INTERFACE_DEVICE_DETAIL_DATA();
detailData.cbSize = Marshal.SizeOf(typeof(GeneralAPI.SP_INTERFACE_DEVICE_DETAIL_DATA));//GeneralAPI.SP_INTERFACE_DEVICE_DETAIL_DATA);
//Marshal.WriteInt32(detailDataBuffer, 4);
Marshal.StructureToPtr(detailData, detailDataBuffer, false);
//int temp = 0;
result = GeneralAPI.SetupDiGetDeviceInterfaceDetail(hdinfo, ref deviceInterfaceData, detailDataBuffer, dwDeviceSize, ref dwDeviceSize, deviceInfoData);
if (!result)
{
GeneralAPI.SetupDiDestroyDeviceInfoList(hdinfo);
Marshal.FreeHGlobal(detailDataBuffer);
//MessageBox.Show("Get Device Interface Detail failed!");
Console.WriteLine("Get Device Interface Detail failed!");
return IntPtr.Zero;
}
IntPtr pdevicePathName = (IntPtr)((int)detailDataBuffer + 4);
string devicePahtName = Marshal.PtrToStringAuto(pdevicePathName);
Marshal.FreeHGlobal(detailDataBuffer);
GeneralAPI.SetupDiDestroyDeviceInfoList(hdinfo);
//string test = "\\\\?\\usb#vid_064b&pid_1212#6&2ed19cf&0&3#{eb8322c5-8b49-4feb-ae6e-c99b2b232045}";
if (BasicParm._PIPE_TYPE.WRITE_PIPE == pipe_type)
{
if (buseAsyncIo)
{
g_hWriteEvent = GeneralAPI.CreateEvent(IntPtr.Zero, true, true, null);
if (!GeneralAPI.ResetEvent(g_hWriteEvent))
{
//MessageBox.Show("Reset write Event failed!!");
Console.WriteLine("Reset write Event failed!!");
}
}
devicePahtName += "\\PIPE_0x01";
}
else if (BasicParm._PIPE_TYPE.READ_PIPE == pipe_type)
{
if (buseAsyncIo)
{
g_hReadEvent = GeneralAPI.CreateEvent(IntPtr.Zero, true, true, null);
if (!GeneralAPI.ResetEvent(g_hReadEvent))
{
//MessageBox.Show("Reset Event failed!!!");
Console.WriteLine("Reset Event failed!!!");
}
}
devicePahtName += "\\PIPE_0x00";
}
else
{
return IntPtr.Zero;
}
// determine the attributes
uint dwAttribs;
if (buseAsyncIo)
dwAttribs = BasicParm.FILE_FLAG_OVERLAPPED;
else
dwAttribs = BasicParm.FILE_ATTRIBUTE_NORMAL;
hDev = GeneralAPI.CreateFile(
devicePahtName,
(uint)(BasicParm.GENERIC_READ | BasicParm.GENERIC_WRITE),
(uint)(BasicParm.FILE_SHARE_READ | BasicParm.FILE_SHARE_WRITE),
BasicParm.NULL,
BasicParm.OPEN_EXISTING,
dwAttribs,
BasicParm.NULL);
return hDev;
}
internal int QueryNumDevices(ref Guid guid)
{
int nDevices = 0;
IntPtr hDevInfo = GeneralAPI.SetupDiGetClassDevs(ref guid,
0, IntPtr.Zero, GeneralAPI.DIGCF_DEVICEINTERFACE | GeneralAPI.DIGCF_PRESENT);
//IntPtr hDevInfo = GeneralAPI.SetupDiGetClassDevs(ref pguid,
// 0, IntPtr.Zero, GeneralAPI.DIGCF_PRESENT);
if (hDevInfo.ToInt32() == GeneralAPI.INVALID_HANDLE_VALUE)
{
throw new Exception("Invalid Handle!");
}
GeneralAPI.SP_DEVINFO_DATA deviceInfoData = new GeneralAPI.SP_DEVINFO_DATA();
//deviceInfoData.cbSize = Marshal.SizeOf(deviceInfoData);//28=16+4+4+4
//deviceInfoData.devInst = 0;
//deviceInfoData.classGuid = System.Guid.Empty; //System.Guid.Empty;
//deviceInfoData.reserved = 0;
GeneralAPI.SP_DEVICE_INTERFACE_DATA deviceInterfaceData = new GeneralAPI.SP_DEVICE_INTERFACE_DATA();
deviceInterfaceData.cbSize = Marshal.SizeOf(deviceInterfaceData);
deviceInterfaceData.flags = 0;
deviceInterfaceData.interfaceclassGuid = System.Guid.Empty;
deviceInterfaceData.reserved = 0;
//GeneralAPI.HidD_GetHidGuid(ref guid);
for (nDevices = 0; ; nDevices++)
{
//if(!GeneralAPI.SetupDiEnumDeviceInfo(hDevInfo, (uint)nDevices,deviceInfoData))
if (!GeneralAPI.SetupDiEnumDeviceInterfaces(hDevInfo, IntPtr.Zero, ref guid, (UInt32)nDevices, ref deviceInterfaceData))
{
int errorNo = Marshal.GetLastWin32Error();
if (errorNo == GeneralAPI.WinError.ERROR_NO_MORE_ITEMS)
{
break;
}
else
{
GeneralAPI.SetupDiDestroyDeviceInfoList(hDevInfo);
return -1;
}
}
}
GeneralAPI.SetupDiDestroyDeviceInfoList(hDevInfo);
//g_lTotalDevices = nDevices;
return nDevices;
}
