Beispiel #1
0
 public static extern Boolean SetupDiGetDeviceInterfaceDetail(
     IntPtr hDevInfo,
     ref SP_DEVICE_INTERFACE_DATA deviceInterfaceData,
     ref SP_DEVICE_INTERFACE_DETAIL_DATA deviceInterfaceDetailData,
     UInt32 deviceInterfaceDetailDataSize,
     out UInt32 requiredSize,
     ref SP_DEVINFO_DATA deviceInfoData
     );
Beispiel #2
0
 public static extern Boolean SetupDiGetDeviceInterfaceDetail(
     IntPtr hDevInfo,
     ref SP_DEVICE_INTERFACE_DATA deviceInterfaceData,
     ref SP_DEVICE_INTERFACE_DETAIL_DATA deviceInterfaceDetailData,
     UInt32 deviceInterfaceDetailDataSize,
     out UInt32 requiredSize,
     ref SP_DEVINFO_DATA deviceInfoData
     );
Beispiel #3
0
        private string FindDevicePath()
        {
            var hidGuid = HidGuid;
            var deviceInfoList = SetupApi.SetupDiGetClassDevs(ref hidGuid, null, IntPtr.Zero, DIGCF.DeviceInterface | DIGCF.Present);
            if (IntPtr.Zero == deviceInfoList)
                return null;

            try {
                for (uint i = 0; ; i++) {
                    var deviceInterfaceData = new SP_DEVICE_INTERFACE_DATA();
                    deviceInterfaceData.cbSize = (uint) Marshal.SizeOf(deviceInterfaceData);
                    if (!SetupApi.SetupDiEnumDeviceInterfaces(deviceInfoList, IntPtr.Zero, ref hidGuid, i, ref deviceInterfaceData))
                        break; // end of the list

                    var deviceInfoData = new SP_DEVINFO_DATA();
                    deviceInfoData.cbSize = (uint)Marshal.SizeOf(deviceInfoData);
                    if (!SetupApi.SetupDiEnumDeviceInfo(deviceInfoList, i, ref deviceInfoData))
                        continue;

                    const uint bufferSize = 1048;
                    var propertyBuffer = Marshal.AllocHGlobal((int)bufferSize);
                    try {

                        uint requiredSize;
                        uint propRegDataType;
                        if (!SetupApi.SetupDiGetDeviceRegistryProperty(
                            deviceInfoList, ref deviceInfoData, SPDRP.HardwareId, out propRegDataType,
                            propertyBuffer, bufferSize, out requiredSize)
                        ) {
                            continue;
                        }

                        var deviceId = Marshal.PtrToStringAuto(propertyBuffer, (int) requiredSize);
                        if (String.IsNullOrEmpty(deviceId)
                            || !deviceId.ToUpperInvariant().Contains(_deviceIdUpper)
                        ) {
                            continue;
                        }

                        var deviceInterfaceDetailData = new SP_DEVICE_INTERFACE_DETAIL_DATA {
                            cbSize = IntPtr.Size == 8 ? 8 : (uint)(4 + Marshal.SystemDefaultCharSize)
                        };
                        var interfaceDetailOk = SetupApi.SetupDiGetDeviceInterfaceDetail(
                            deviceInfoList, ref deviceInterfaceData, ref deviceInterfaceDetailData,
                            SP_DEVICE_INTERFACE_DETAIL_DATA.BUFFER_SIZE, out requiredSize, ref deviceInfoData);

                        if (interfaceDetailOk)
                            return deviceInterfaceDetailData.devicePath;
                    }
                    finally {
                        Marshal.FreeHGlobal(propertyBuffer);
                    }

                }
            }
            finally {
                SetupApi.SetupDiDestroyDeviceInfoList(deviceInfoList);
            }
            return null;
        }