public UsbDeviceList(Hardware hardware)
{
InitializeComponent();
_hardware = hardware;
_hardware.DeviceInterfaceChanged += Hardware_DeviceInterfaceChanged;
RefreshList();
}
protected Device(IntPtr enumeration, ref Hardware.SP_DEVINFO_DATA device)
{
HardwareIds = (string[])GetDeviceRegistryProperty(enumeration, ref device, RegistryProperty.HardwareId);
Manufacturer = (string)GetDeviceRegistryProperty(enumeration, ref device, RegistryProperty.Manufacturer);
DeviceDescription = (string)GetDeviceRegistryProperty(enumeration, ref device, RegistryProperty.DeviceDescription);
FriendlyName = (string)GetDeviceRegistryProperty(enumeration, ref device, RegistryProperty.FriendlyName);
LocationInformation = (string)GetDeviceRegistryProperty(enumeration, ref device, RegistryProperty.LocationInformation);
PhysicalDeviceObjectName = (string)GetDeviceRegistryProperty(enumeration, ref device, RegistryProperty.PhysicalDeviceObjectName);
Configuration = (ConfigFlags)GetDeviceRegistryProperty(enumeration, ref device, RegistryProperty.ConfigFlags);
InstallState = (InstallStates)GetDeviceRegistryProperty(enumeration, ref device, RegistryProperty.InstallState);
LargeIcon = LoadDeviceIcon(enumeration, ref device, 48);
SmallIcon = LoadDeviceIcon(enumeration, ref device, 16);
}
private Bitmap LoadDeviceIcon(IntPtr enumeration, ref Hardware.SP_DEVINFO_DATA device, uint size)
{
IntPtr hIcon;
return (SetupDiLoadDeviceIcon(enumeration, ref device, size, size, 0, out hIcon)) ? Bitmap.FromHicon(hIcon) : null;
}
private static extern bool SetupDiLoadDeviceIcon( IntPtr deviceInfoSet, ref Hardware.SP_DEVINFO_DATA deviceInfoData, uint cXIcon, uint cYIcon, uint flags, out IntPtr hIcon );
private static extern bool SetupDiGetDeviceRegistryProperty( IntPtr deviceInfoSet, ref Hardware.SP_DEVINFO_DATA deviceInfoData, Device.RegistryProperty property, out RegistryDataType propertyRegDataType, IntPtr propertyBuffer, uint propertyBufferSize, out UInt32 requiredSize );
private static object GetDeviceRegistryProperty(IntPtr h, ref Hardware.SP_DEVINFO_DATA devInfo, RegistryProperty property)
{
RegistryDataType dataType;
uint bufferLength;
SetupDiGetDeviceRegistryProperty(h, ref devInfo, property, out dataType, IntPtr.Zero, 0, out bufferLength);
object result = null;
IntPtr buffer = Marshal.AllocHGlobal((int)bufferLength);
if (SetupDiGetDeviceRegistryProperty(h, ref devInfo, property, out dataType, buffer, bufferLength, out bufferLength)) {
switch (dataType) {
case RegistryDataType.REG_SZ:
result = Marshal.PtrToStringAuto(buffer);
break;
case RegistryDataType.REG_MULTI_SZ:
var bytes = PtrToByteArray(buffer, bufferLength);
var text = Encoding.Unicode.GetString(bytes);
result = text.TrimEnd('\0').Split('\0');
break;
case RegistryDataType.REG_BINARY:
result = PtrToByteArray(buffer, bufferLength);
break;
case RegistryDataType.REG_DWORD:
result = Marshal.ReadInt32(buffer);
break;
default:
throw new Exception(string.Format("Unsupported data type: {0}", dataType));
}
}
Marshal.FreeHGlobal(buffer);
return result;
}
private void UsbDeviceList_FormClosed(object sender, FormClosedEventArgs e)
{
_hardware.DeviceInterfaceChanged -= Hardware_DeviceInterfaceChanged;
_hardware = null;
}
public DeviceInterfaceChangedArgs(Hardware.DeviceEvent eventType, Guid classId, string deviceName)
{
EventType = eventType;
ClassId = classId;
DeviceName = deviceName;
}