private static List <Device> EnumerateDevices(IntPtr devInfo)
{
List <Device> devices = new List <Device> ();
Dictionary <string, Device> devicesByHwId = new Dictionary <string, Device> ();
for (uint i = 0; ; i++)
{
WinApi.SP_DEVINFO_DATA devInfoData = new WinApi.SP_DEVINFO_DATA();
devInfoData.cbSize = (uint)Marshal.SizeOf(devInfoData);
if (!WinApi.SetupDiEnumDeviceInfo(devInfo, i, ref devInfoData))
{
break;
}
Device device = Device.FromDevInfo(devInfo, devInfoData);
if (device != null)
{
if (!devicesByHwId.ContainsKey(device.HardwareId))
{
devicesByHwId[device.HardwareId] = device;
devices.Add(device);
}
else
{
// TODO: should solve this differently, the hardware
// IDs aren't unique...
}
}
}
return(devices);
}
private Device(IntPtr devInfo, WinApi.SP_DEVINFO_DATA devInfoData, string name, string hardwareId, string physicalDeviceObjectName, UInt32 capabilities)
{
this.devInfo = devInfo;
this.devInfoData = devInfoData;
this.name = name;
this.hardwareId = hardwareId;
this.physicalDeviceObjectName = physicalDeviceObjectName;
this.capabilities = capabilities;
}
public static Device FromDevInfo(IntPtr devInfo, WinApi.SP_DEVINFO_DATA devInfoData)
{
Device device = null;
string name = null;
string hardwareId = null;
string physicalDeviceObjectName = null;
UInt32 capabilities = 0;
byte[] buf = new byte[1024];
uint reqBufSize;
if (WinApi.SetupDiGetDeviceRegistryProperty(devInfo, ref devInfoData, WinApi.SPDRP_FRIENDLYNAME, IntPtr.Zero, buf, (uint)buf.Length, out reqBufSize))
{
name = WinApi.ByteArrayToString(buf);
}
if (name == null)
{
if (WinApi.SetupDiGetDeviceRegistryProperty(devInfo, ref devInfoData, WinApi.SPDRP_DEVICEDESC, IntPtr.Zero, buf, (uint)buf.Length, out reqBufSize))
{
name = WinApi.ByteArrayToString(buf);
}
}
if (WinApi.SetupDiGetDeviceRegistryProperty(devInfo, ref devInfoData, WinApi.SPDRP_HARDWAREID, IntPtr.Zero, buf, (uint)buf.Length, out reqBufSize))
{
string[] tokens = WinApi.MarshalMultiStringToStringArray(buf);
hardwareId = String.Join(";", tokens);
}
if (WinApi.SetupDiGetDeviceRegistryProperty(devInfo, ref devInfoData, WinApi.SPDRP_PHYSICAL_DEVICE_OBJECT_NAME, IntPtr.Zero, buf, (uint)buf.Length, out reqBufSize))
{
physicalDeviceObjectName = WinApi.ByteArrayToString(buf);
}
if (WinApi.SetupDiGetDeviceRegistryProperty(devInfo, ref devInfoData, WinApi.SPDRP_CAPABILITIES, IntPtr.Zero, buf, (uint)buf.Length, out reqBufSize))
{
capabilities = BitConverter.ToUInt32(buf, 0);
}
if (name != null && hardwareId != null)
{
device = new Device(devInfo, devInfoData, name, hardwareId, physicalDeviceObjectName, capabilities);
}
return(device);
}
private static List<Device> EnumerateDevices (IntPtr devInfo)
{
List<Device> devices = new List<Device> ();
Dictionary<string, Device> devicesByHwId = new Dictionary<string, Device> ();
for (uint i = 0; ; i++)
{
WinApi.SP_DEVINFO_DATA devInfoData = new WinApi.SP_DEVINFO_DATA ();
devInfoData.cbSize = (uint)Marshal.SizeOf (devInfoData);
if (!WinApi.SetupDiEnumDeviceInfo (devInfo, i, ref devInfoData))
break;
Device device = Device.FromDevInfo (devInfo, devInfoData);
if (device != null)
{
if (!devicesByHwId.ContainsKey (device.HardwareId))
{
devicesByHwId[device.HardwareId] = device;
devices.Add (device);
}
else
{
// TODO: should solve this differently, the hardware
// IDs aren't unique...
}
}
}
return devices;
}
private Device (IntPtr devInfo, WinApi.SP_DEVINFO_DATA devInfoData, string name, string hardwareId, string physicalDeviceObjectName, UInt32 capabilities)
{
this.devInfo = devInfo;
this.devInfoData = devInfoData;
this.name = name;
this.hardwareId = hardwareId;
this.physicalDeviceObjectName = physicalDeviceObjectName;
this.capabilities = capabilities;
}
