private String GetDeviceInterfaceDetail()
{
UInt32 requiredSize;
this.devInfoData = new UsbDeviceWinApi.SP_DEVINFO_DATA();
this.devInfoData.Size = (UInt32)Marshal.SizeOf(devInfoData);
Boolean success = UsbDeviceWinApi.SetupDiGetDeviceInterfaceDetail(this.handle, ref this.deviceInterfaceData,
IntPtr.Zero, 0, out requiredSize, ref this.devInfoData);
if (success || (Marshal.GetLastWin32Error() != UsbDeviceWinApi.ERROR_INSUFFICIENT_BUFFER))
{
this.TraceError("SetupDiGetDeviceInterfaceDetail");
return(null);
}
IntPtr buffer = Marshal.AllocHGlobal((Int32)requiredSize);
Marshal.WriteInt32(buffer, 8 == IntPtr.Size ? 8 : 6);
success = UsbDeviceWinApi.SetupDiGetDeviceInterfaceDetail(this.handle, ref this.deviceInterfaceData,
buffer, requiredSize, out requiredSize, ref this.devInfoData);
String devicePath = null;
if (success)
{
IntPtr stringBuffer = new IntPtr(buffer.ToInt64() + 4);
devicePath = Marshal.PtrToStringAuto(stringBuffer);
}
else
{
this.TraceError("SetupDiGetDeviceInterfaceDetail");
}
Marshal.FreeHGlobal(buffer);
return(devicePath);
}
private String GetDeviceInterfaceDetail()
{
UInt32 requiredSize;
this.devInfoData = new UsbDeviceWinApi.SP_DEVINFO_DATA();
this.devInfoData.Size = (UInt32)Marshal.SizeOf(devInfoData);
Boolean success = UsbDeviceWinApi.SetupDiGetDeviceInterfaceDetail(this.handle, ref this.deviceInterfaceData,
IntPtr.Zero, 0, out requiredSize, ref this.devInfoData);
if (success || (Marshal.GetLastWin32Error() != UsbDeviceWinApi.ERROR_INSUFFICIENT_BUFFER))
{
this.TraceError("SetupDiGetDeviceInterfaceDetail");
return null;
}
IntPtr buffer = Marshal.AllocHGlobal((Int32)requiredSize);
Marshal.WriteInt32(buffer, 8 == IntPtr.Size ? 8 : 6);
success = UsbDeviceWinApi.SetupDiGetDeviceInterfaceDetail(this.handle, ref this.deviceInterfaceData,
buffer, requiredSize, out requiredSize, ref this.devInfoData);
String devicePath = null;
if (success)
{
IntPtr stringBuffer = new IntPtr(buffer.ToInt64() + 4);
devicePath = Marshal.PtrToStringAuto(stringBuffer);
}
else
{
this.TraceError("SetupDiGetDeviceInterfaceDetail");
}
Marshal.FreeHGlobal(buffer);
return devicePath;
}
