WIAスキャナの機能を取得

Question

スキャナの解像度および/またはdpiをどのように取得しますか？また、自動ドキュメントフィーダなどの情報を取得する方法は？

Answer 1

プロパティのリストを含むPropertiesオブジェクトを使用できます。 DeviceオブジェクトのPropertiesオブジェクトを使用してスキャナプロパティ（ドキュメントフィーダ）にアクセスし、ItemオブジェクトのPropertiesオブジェクトを使用してページプロパティ（解像度）にアクセスします。ここで

はいくつかのコードです：

 DeviceManager manager = new DeviceManagerClass(); 
     DeviceInfo scannerInfo = WiaHelper.FindFirstScanner(manager); 
     Device device = scannerInfo.Connect(); 
     Item item = device.Items[1]; 

    public static DeviceInfo FindFirstScanner(DeviceManager manager) 
    { 
     DeviceInfos infos = manager.DeviceInfos; 
     foreach (DeviceInfo info in infos) 
      if (info.Type == WiaDeviceType.ScannerDeviceType) 
       return info; 
     return null; 
    } 

    public static Property FindProperty(WIA.Properties properties, int propertyId) 
    { 
     foreach (Property property in properties) 
      if (property.PropertyID == propertyId) 
       return property; 
     return null; 
    } 

    public static void SetDeviceProperty(Device device, int propertyId, object value) 
    { 
     Property property = FindProperty(device.Properties, propertyId); 
     if (property != null) 
      property.set_Value(value); 
    } 

    public static object GetDeviceProperty(Device device, int propertyId) 
    { 
     Property property = FindProperty(device.Properties, propertyId); 
     return property != null ? property.get_Value() : null; 
    } 

    public static object GetItemProperty(Item item, int propertyId) 
    { 
     Property property = FindProperty(item.Properties, propertyId); 
     return property != null ? property.get_Value() : null; 
    } 

    public static void SetItemProperty(Item item, int propertyId, object value) 
    { 
     Property property = FindProperty(item.Properties, propertyId); 
     if (property != null) 
      property.set_Value(value); 
    } 

Answer 2

あなたはマティアスがあなたを示唆したように、プロパティをナビゲートあなたのスキャナで利用可能な機能はオブジェクトを取得することができます。

MSDN WIA Documentation

またはあなたの場合：あなたは、MSDNのドキュメントを読むことができ、すべての単一のプロパティの可能な値については

public enum WiaProperty 
{ 
    DeviceId = 2, 
    Manufacturer = 3, 
    Description = 4, 
    Type = 5, 
    Port = 6, 
    Name = 7, 
    Server = 8, 
    RemoteDevId = 9, 
    UIClassId = 10, 
    FirmwareVersion = 1026, 
    ConnectStatus = 1027, 
    DeviceTime = 1028, 
    PicturesTaken = 2050, 
    PicturesRemaining = 2051, 
    ExposureMode = 2052, 
    ExposureCompensation = 2053, 
    ExposureTime = 2054, 
    FNumber = 2055, 
    FlashMode = 2056, 
    FocusMode = 2057, 
    FocusManualDist = 2058, 
    ZoomPosition = 2059, 
    PanPosition = 2060, 
    TiltPostion = 2061, 
    TimerMode = 2062, 
    TimerValue = 2063, 
    PowerMode = 2064, 
    BatteryStatus = 2065, 
    Dimension = 2070, 
    HorizontalBedSize = 3074, 
    VerticalBedSize = 3075, 
    HorizontalSheetFeedSize = 3076, 
    VerticalSheetFeedSize = 3077, 
    SheetFeederRegistration = 3078,   // 0 = LEFT_JUSTIFIED, 1 = CENTERED, 2 = RIGHT_JUSTIFIED 
    HorizontalBedRegistration = 3079,  // 0 = LEFT_JUSTIFIED, 1 = CENTERED, 2 = RIGHT_JUSTIFIED 
    VerticalBedRegistraion = 3080,   // 0 = TOP_JUSTIFIED, 1 = CENTERED, 2 = BOTTOM_JUSTIFIED 
    PlatenColor = 3081, 
    PadColor = 3082, 
    FilterSelect = 3083, 
    DitherSelect = 3084, 
    DitherPatternData = 3085, 

    DocumentHandlingCapabilities = 3086, // FEED = 0x01, FLAT = 0x02, DUP = 0x04, DETECT_FLAT = 0x08, 
              // DETECT_SCAN = 0x10, DETECT_FEED = 0x20, DETECT_DUP = 0x40, 
              // DETECT_FEED_AVAIL = 0x80, DETECT_DUP_AVAIL = 0x100 
    DocumentHandlingStatus = 3087,   // FEED_READY = 0x01, FLAT_READY = 0x02, DUP_READY = 0x04, 
              // FLAT_COVER_UP = 0x08, PATH_COVER_UP = 0x10, PAPER_JAM = 0x20 
    DocumentHandlingSelect = 3088,   // FEEDER = 0x001, FLATBED = 0x002, DUPLEX = 0x004, FRONT_FIRST = 0x008 
              // BACK_FIRST = 0x010, FRONT_ONLY = 0x020, BACK_ONLY = 0x040 
              // NEXT_PAGE = 0x080, PREFEED = 0x100, AUTO_ADVANCE = 0x200 
    DocumentHandlingCapacity = 3089, 
    HorizontalOpticalResolution = 3090, 
    VerticalOpticalResolution = 3091, 
    EndorserCharacters = 3092, 
    EndorserString = 3093, 
    ScanAheadPages = 3094,     // ALL_PAGES = 0 
    MaxScanTime = 3095, 
    Pages = 3096,       // ALL_PAGES = 0 
    PageSize = 3097,      // A4 = 0, LETTER = 1, CUSTOM = 2 
    PageWidth = 3098, 
    PageHeight = 3099, 
    Preview = 3100,       // FINAL_SCAN = 0, PREVIEW = 1 
    TransparencyAdapter = 3101, 
    TransparecnyAdapterSelect = 3102, 
    ItemName = 4098, 
    FullItemName = 4099, 
    ItemTimeStamp = 4100, 
    ItemFlags = 4101, 
    AccessRights = 4102, 
    DataType = 4103, 
    BitsPerPixel = 4104, 
    PreferredFormat = 4105, 
    Format = 4106, 
    Compression = 4107,      // 0 = NONE, JPG = 5, PNG = 8 
    MediaType = 4108, 
    ChannelsPerPixel = 4109, 
    BitsPerChannel = 4110, 
    Planar = 4111, 
    PixelsPerLine = 4112, 
    BytesPerLine = 4113, 
    NumberOfLines = 4114, 
    GammaCurves = 4115, 
    ItemSize = 4116, 
    ColorProfiles = 4117, 
    BufferSize = 4118, 
    RegionType = 4119, 
    ColorProfileName = 4120, 
    ApplicationAppliesColorMapping = 4121, 
    StreamCompatibilityId = 4122, 
    ThumbData = 5122, 
    ThumbWidth = 5123, 
    ThumbHeight = 5124, 
    AudioAvailable = 5125, 
    AudioFormat = 5126, 
    AudioData = 5127, 
    PicturesPerRow = 5128, 
    SequenceNumber = 5129, 
    TimeDelay = 5130, 
    CurrentIntent = 6146, 
    HorizontalResolution = 6147, 
    VerticalResolution = 6148, 
    HorizontalStartPostion = 6149, 
    VerticalStartPosition = 6150, 
    HorizontalExtent = 6151, 
    VerticalExtent = 6152, 
    PhotometricInterpretation = 6153, 
    Brightness = 6154, 
    Contrast = 6155, 
    Orientation = 6156, // 0 = PORTRAIT, 1 = LANDSCAPE, 2 = 180°, 3 = 270° 
    Rotation = 6157, // 0 = PORTRAIT, 1 = LANDSCAPE, 2 = 180°, 3 = 270° 
    Mirror = 6158, 
    Threshold = 6159, 
    Invert = 6160, 
    LampWarmUpTime = 6161, 
} 

： ここで私はすべてのプロパティとその相対的なIDを使用して列挙型であります元のSDKのヘッダファイルを分析することができます。