xref: /aoo4110/main/twain/inc/twain.h (revision b1cdbd2c)

/* ======================================================================== *\

  Copyright (C) 2007 TWAIN Working Group: Adobe Systems Incorporated,
  AnyDoc Software Inc., Eastman Kodak Company, Fujitsu Computer Products
  of America, JFL Peripheral Solutions Inc., Ricoh Corporation, and
  Xerox Corporation.  All rights reserved.

  Copyright (C) 1991, 1992 TWAIN Working Group: Aldus, Caere, Eastman-Kodak,
  Hewlett-Packard and Logitech Corporations.  All rights reserved.

  Copyright (C) 1997 TWAIN Working Group: Bell+Howell, Canon, DocuMagix,
  Fujitsu, Genoa Technology, Hewlett-Packard, Kofax Imaging Products, and
  Ricoh Corporation.  All rights reserved.

  Copyright � 1998 TWAIN Working Group: Adobe Systems Incorporated,
  Canon Information Systems, Eastman Kodak Company,
  Fujitsu Computer Products of America, Genoa Technology,
  Hewlett-Packard Company, Intel Corporation, Kofax Image Products,
  JFL Peripheral Solutions Inc., Ricoh Corporation, and Xerox Corporation.
  All rights reserved.

  Copyright � 2000 TWAIN Working Group: Adobe Systems Incorporated,
  Canon Information Systems, Digimarc Corporation, Eastman Kodak Company,
  Fujitsu Computer Products of America, Hewlett-Packard Company,
  JFL Peripheral Solutions Inc., Ricoh Corporation, and Xerox Corporation.
  All rights reserved.


  TWAIN.h -  This is the definitive include file for applications and
          data sources written to the TWAIN specification.
          It defines constants, data structures, messages etc.
          for the public interface to TWAIN.

  Revision History:
    version 1.0, March 6, 1992.  TWAIN 1.0.
    version 1.1, January 1993.   Tech Notes 1.1
    version 1.5, June 1993.      Specification Update 1.5
                                 Change DC to TW
                                 Change filename from DC.H to TWAIN.H
    version 1.5, July 1993.      Remove spaces from country identifiers

    version 1.7, July 1997       Added Capabilities and data structure for
                                 document imaging and digital cameras.
                                 KHL.
    version 1.7, July 1997       Inserted Borland compatibile structure packing
                                 directives provided by Mentor.  JMH
    version 1.7, Aug 1997        Expanded file tabs to spaces.
                                 NOTE: future authors should be sure to have
                                 their editors set to automatically expand tabs
                                 to spaces (original tab setting was 4 spaces).
    version 1.7, Sept 1997       Added job control values
                                 Added return codes
    version 1.7, Sept 1997       changed definition of pRGBRESPONSE to
                                 pTW_RGBRESPONSE
    version 1.7  Aug 1998        Added missing TWEI_BARCODEROTATION values
                                 TWBCOR_ types JMH
    version 1.8  August 1998     Added new types and definitions required
                                 for 1.8 Specification JMH
    version 1.8  January 1999    Changed search mode from SRCH_ to TWBD_ as
                                 in 1.8 Specification, added TWBT_MAXICODE JMH
    version 1.8  January 1999    Removed undocumented duplicate AUTO<cap> JMH
    version 1.8  March 1999      Removed undocumented 1.8 caps:
                                 CAP_FILESYSTEM
                                 CAP_PAPERBINDING
                                 CAP_PASSTHRU
                                 CAP_POWERDOWNTIME
                                 ICAP_AUTODISCARDBLANKPAGES
                               * CAP_PAGEMULTIPLEACQUIRE - is CAP_REACQUIREALLOWED,
                               requires spec change.  JMH
                                 Added Mac structure packing modifications JMH
    version 1.9  March 2000  Added new types and definations required
                             for 1.9 Specification MLM
    version 1.9  March 2000  Added ICAP_JPEGQUALITY, TWJQ_ values,
                                 updated TWON_PROTOCOLMINOR for Release v1.9 MN
    version 1.91 August 2007     Added new types and definitions required
                                 for 1.91 Specification MLM
    version 2.0  Sept 2007       Added new types and definitions required
                                 for 2.0 Specification FHH
    version 2.0  Mar 2008        Depreciated ICAP_PIXELTYPEs TWPT_SRGB64, TWPT_BGR,
                                 TWPT_CIELAB, TWPT_CIELUV, and TWPT_YCBCR  JMW
    version 2.0  Mar 2008        Added missing new 2.0 CAP_ definitions JMW
    version 2.0  Dec 2008        Updated TW_INFO structure for 64bit JMW
    version 2.1  Mar 2009        Added new types and definitions required
                                 for 2.1 Specification JMW
\* ======================================================================== */

#ifndef TWAIN
#define TWAIN

/****************************************************************************
 * TWAIN Version                                                            *
 ****************************************************************************/
#define TWON_PROTOCOLMINOR   1        /* Changed for Version 2.1            */
#define TWON_PROTOCOLMAJOR   2

/****************************************************************************
 * Platform Dependent Definitions and Typedefs                              *
 ****************************************************************************/

/*
 * Mingw32 may be detected as both GNUC or WIN32/64 so try
 * to detect it early and override both GNU and MS.
 */
#if defined(__MINGW32__)
    #define TWH_CMP_MING32
#endif

/* Microsoft C/C++ Compiler */
#if defined(WIN32) || defined(WIN64) || defined (_WINDOWS)
    #define TWH_CMP_MSC
    #if  defined(_WIN64) || defined(WIN64)
      #define TWH_64BIT
    #elif defined(WIN32) || defined(_WIN32)
      #define TWH_32BIT
    #endif

/* Apple Compiler (which is GNU now) */
#elif defined(__APPLE__)
    #define TWH_CMP_XCODE
    #define TWH_32BIT

/* GNU C/C++ Compiler */
#elif defined(__GNUC__)
    #define TWH_CMP_GNU
    #if defined(__alpha__)\
        ||defined(__ia64__)\
        ||defined(__ppc64__)\
        ||defined(__s390x__)\
        ||defined(__x86_64__)
      #define TWH_64BIT
    #else
      #define TWH_32BIT
    #endif

/* Borland C/C++ Compiler */
#elif defined(__BORLAND__)
    #define TWH_CMP_BORLAND
    #define TWH_32BIT
/* Unrecognized */
#else
    #error Unrecognized compiler
#endif

/* Win32 and Win64 systems */
#if defined(TWH_CMP_MSC) | defined(TWH_CMP_BORLAND)
    typedef HANDLE  TW_HANDLE;
    typedef LPVOID  TW_MEMREF;
    typedef UINT_PTR TW_UINTPTR;

/* MacOS/X... */
#elif defined(TWH_CMP_XCODE)
    #define PASCAL   pascal
    #define FAR
    typedef Handle   TW_HANDLE;
    typedef char    *TW_MEMREF;

    #ifdef TWH_32BIT
      //32 bit GNU
      typedef unsigned long      TW_UINTPTR;
    #else
      //64 bit GNU
      typedef unsigned long long TW_UINTPTR;
    #endif

/* Everything else... */
#else
    #define PASCAL
    #define FAR
    typedef void* TW_HANDLE;
    typedef void* TW_MEMREF;
    typedef unsigned char BYTE;

    #ifdef TWH_32BIT
      //32 bit GNU
      typedef unsigned long      TW_UINTPTR;
    #else
      //64 bit GNU
      typedef unsigned long long TW_UINTPTR;
    #endif
#endif


/* Set the packing: this occurs before any structures are defined */
#if defined(TWH_CMP_MING32)
    #pragma pack (push, 2)
#elif defined(TWH_CMP_MSC)
    #pragma pack (push, before_twain)
    #pragma pack (2)
#elif defined(TWH_CMP_GNU)
    #pragma pack (push, before_twain)
    #pragma pack (2)
#elif defined(TWH_CMP_BORLAND)
    #pragma option -a2
#elif defined(TWH_CMP_XCODE)
    #if PRAGMA_STRUCT_ALIGN
        #pragma options align=mac68k
    #elif PRAGMA_STRUCT_PACKPUSH
        #pragma pack (push, 2)
    #elif PRAGMA_STRUCT_PACK
        #pragma pack (2)
    #endif
#endif


/****************************************************************************
 * Type Definitions                                                         *
 ****************************************************************************/

/* String types. These include room for the strings and a NULL char,     *
 * or, on the Mac, a length byte followed by the string.                 *
 * TW_STR255 must hold less than 256 chars so length fits in first byte. */
typedef char    TW_STR32[34],     FAR *pTW_STR32;
typedef char    TW_STR64[66],     FAR *pTW_STR64;
typedef char    TW_STR128[130],   FAR *pTW_STR128;
typedef char    TW_STR255[256],   FAR *pTW_STR255;

/* Numeric types. */
typedef char           TW_INT8,   FAR *pTW_INT8;
typedef short          TW_INT16,  FAR *pTW_INT16;
typedef long           TW_INT32,  FAR *pTW_INT32;
typedef unsigned char  TW_UINT8,  FAR *pTW_UINT8;
typedef unsigned short TW_UINT16, FAR *pTW_UINT16;
typedef unsigned long  TW_UINT32, FAR *pTW_UINT32;
typedef unsigned short TW_BOOL,   FAR *pTW_BOOL;


/****************************************************************************
 * Structure Definitions                                                    *
 ****************************************************************************/

/* Fixed point structure type. */
typedef struct {
    TW_INT16     Whole;        /* maintains the sign */
    TW_UINT16    Frac;
} TW_FIX32,  FAR *pTW_FIX32;

/* No DAT.  Defines a frame rectangle in ICAP_UNITS coordinates. */
typedef struct {
   TW_FIX32   Left;
   TW_FIX32   Top;
   TW_FIX32   Right;
   TW_FIX32   Bottom;
} TW_FRAME, FAR * pTW_FRAME;

/* No DAT needed. */
typedef struct {
   TW_FIX32   StartIn;
   TW_FIX32   BreakIn;
   TW_FIX32   EndIn;
   TW_FIX32   StartOut;
   TW_FIX32   BreakOut;
   TW_FIX32   EndOut;
   TW_FIX32   Gamma;
   TW_FIX32   SampleCount;  /* if =0 use the gamma */
} TW_DECODEFUNCTION, FAR * pTW_DECODEFUNCTION;

/* No DAT needed. */
typedef struct {
   TW_DECODEFUNCTION   Decode[3];
   TW_FIX32            Mix[3][3];
} TW_TRANSFORMSTAGE, FAR * pTW_TRANSFORMSTAGE;

/* TWON_ARRAY. Container for array of values (a simplified TW_ENUMERATION) */
typedef struct {
   TW_UINT16  ItemType;
   TW_UINT32  NumItems;    /* How many items in ItemList           */
   TW_UINT8   ItemList[1]; /* Array of ItemType values starts here */
} TW_ARRAY, FAR * pTW_ARRAY;

/* DAT_AUDIOINFO, information about audio data */
typedef struct {
   TW_STR255  Name;       /* name of audio data */
   TW_UINT32  Reserved;   /* reserved space */
} TW_AUDIOINFO, FAR * pTW_AUDIOINFO;

/* TW_CALLBACK, used to register callbacks Added 2.0 */
typedef struct  {
    TW_MEMREF   CallBackProc;
    TW_UINT32   RefCon;
    TW_INT16    Message;
} TW_CALLBACK, FAR * pTW_CALLBACK;

/* DAT_CAPABILITY. Used by application to get/set capability from/in a data source. */
typedef struct {
   TW_UINT16  Cap; /* id of capability to set or get, e.g. CAP_BRIGHTNESS */
   TW_UINT16  ConType; /* TWON_ONEVALUE, _RANGE, _ENUMERATION or _ARRAY   */
   TW_HANDLE  hContainer; /* Handle to container of type Dat              */
} TW_CAPABILITY, FAR * pTW_CAPABILITY;

/* No DAT needed. */
typedef struct {
   TW_FIX32   X;
   TW_FIX32   Y;
   TW_FIX32   Z;
} TW_CIEPOINT, FAR * pTW_CIEPOINT;

/* DAT_CIECOLOR. */
typedef struct {
   TW_UINT16           ColorSpace;
   TW_INT16            LowEndian;
   TW_INT16            DeviceDependent;
   TW_INT32            VersionNumber;
   TW_TRANSFORMSTAGE   StageABC;
   TW_TRANSFORMSTAGE   StageLMN;
   TW_CIEPOINT         WhitePoint;
   TW_CIEPOINT         BlackPoint;
   TW_CIEPOINT         WhitePaper;
   TW_CIEPOINT         BlackInk;
   TW_FIX32            Samples[1];
} TW_CIECOLOR, FAR * pTW_CIECOLOR;

typedef struct {
    TW_UINT32  InfoLength;     /* Length of Information in bytes.  */
    TW_HANDLE  hData;          /* Place holder for data, DS Allocates */
}TW_CUSTOMDSDATA, FAR *pTW_CUSTOMDSDATA;

/* DAT_DEVICEEVENT, information about events */
typedef struct {
   TW_UINT32  Event;                  /* One of the TWDE_xxxx values. */
   TW_STR255  DeviceName;             /* The name of the device that generated the event */
   TW_UINT32  BatteryMinutes;         /* Battery Minutes Remaining    */
   TW_INT16   BatteryPercentage;      /* Battery Percentage Remaining */
   TW_INT32   PowerSupply;            /* Power Supply                 */
   TW_FIX32   XResolution;            /* Resolution                   */
   TW_FIX32   YResolution;            /* Resolution                   */
   TW_UINT32  FlashUsed2;             /* Flash Used2                  */
   TW_UINT32  AutomaticCapture;       /* Automatic Capture            */
   TW_UINT32  TimeBeforeFirstCapture; /* Automatic Capture            */
   TW_UINT32  TimeBetweenCaptures;    /* Automatic Capture            */
} TW_DEVICEEVENT, FAR * pTW_DEVICEEVENT;

/* No DAT needed. */
typedef struct {
   TW_UINT8    Index;    /* Value used to index into the color table. */
   TW_UINT8    Channel1; /* First  tri-stimulus value (e.g Red)       */
   TW_UINT8    Channel2; /* Second tri-stimulus value (e.g Green)     */
   TW_UINT8    Channel3; /* Third  tri-stimulus value (e.g Blue)      */
} TW_ELEMENT8, FAR * pTW_ELEMENT8;

/* TWON_ENUMERATION. Container for a collection of values. */
typedef struct {
   TW_UINT16  ItemType;
   TW_UINT32  NumItems;     /* How many items in ItemList                 */
   TW_UINT32  CurrentIndex; /* Current value is in ItemList[CurrentIndex] */
   TW_UINT32  DefaultIndex; /* Powerup value is in ItemList[DefaultIndex] */
   TW_UINT8   ItemList[1];  /* Array of ItemType values starts here       */
} TW_ENUMERATION, FAR * pTW_ENUMERATION;

/* DAT_EVENT. For passing events down from the application to the DS. */
typedef struct {
   TW_MEMREF  pEvent;    /* Windows pMSG or Mac pEvent.                 */
   TW_UINT16  TWMessage; /* TW msg from data source, e.g. MSG_XFERREADY */
} TW_EVENT, FAR * pTW_EVENT;

typedef struct {
    TW_UINT16   InfoID;
    TW_UINT16   ItemType;
    TW_UINT16   NumItems;
    union {
      TW_UINT16   CondCode;    /* Depreciated, use ReturnCode. TWAIN 2.0 and older. */
      TW_UINT16   ReturnCode;  /* TWAIN 2.1 and newer */
    };
    TW_UINTPTR  Item;
}TW_INFO, FAR* pTW_INFO;

typedef struct {
    TW_UINT32   NumInfos;
    TW_INFO     Info[1];
}TW_EXTIMAGEINFO, FAR* pTW_EXTIMAGEINFO;

/* DAT_FILESYSTEM, information about TWAIN file system */
typedef struct {
   /* DG_CONTROL / DAT_FILESYSTEM / MSG_xxxx fields     */
   TW_STR255  InputName; /* The name of the input or source file */
   TW_STR255  OutputName; /* The result of an operation or the name of a destination file */
   TW_MEMREF  Context; /* Source specific data used to remember state information */
   /* DG_CONTROL / DAT_FILESYSTEM / MSG_DELETE field    */
   int        Recursive; /* recursively delete all sub-directories */
   /* DG_CONTROL / DAT_FILESYSTEM / MSG_GETINFO fields  */
   TW_INT32   FileType; /* One of the TWFY_xxxx values */
   TW_UINT32  Size; /* Size of current FileType */
   TW_STR32   CreateTimeDate; /* creation date of the file */
   TW_STR32   ModifiedTimeDate; /* last date the file was modified */
   TW_UINT32  FreeSpace; /* bytes of free space on the current device */
   TW_INT32   NewImageSize; /* estimate of the amount of space a new image would take up */
   TW_UINT32  NumberOfFiles; /* number of files, depends on FileType */
   TW_UINT32  NumberOfSnippets; /* number of audio snippets */
   TW_UINT32  DeviceGroupMask; /* used to group cameras (ex: front/rear bitonal, front/rear grayscale...) */
   char       Reserved[508]; /**/
} TW_FILESYSTEM, FAR * pTW_FILESYSTEM;

/* DAT_GRAYRESPONSE */
typedef struct {
   TW_ELEMENT8         Response[1];
} TW_GRAYRESPONSE, FAR * pTW_GRAYRESPONSE;

/* No DAT needed.  Describes version of software currently running. */
typedef struct {
   TW_UINT16  MajorNum;  /* Major revision number of the software. */
   TW_UINT16  MinorNum;  /* Incremental revision number of the software. */
   TW_UINT16  Language;  /* e.g. TWLG_SWISSFRENCH */
   TW_UINT16  Country;   /* e.g. TWCY_SWITZERLAND */
   TW_STR32   Info;      /* e.g. "1.0b3 Beta release" */
} TW_VERSION, FAR * pTW_VERSION;

/* DAT_IDENTITY. Identifies the program/library/code resource. */
typedef struct {
   TW_UINT32  Id;              /* Unique number.  In Windows, application hWnd      */
   TW_VERSION Version;         /* Identifies the piece of code              */
   TW_UINT16  ProtocolMajor;   /* Application and DS must set to TWON_PROTOCOLMAJOR */
   TW_UINT16  ProtocolMinor;   /* Application and DS must set to TWON_PROTOCOLMINOR */
   TW_UINT32  SupportedGroups; /* Bit field OR combination of DG_ constants */
   TW_STR32   Manufacturer;    /* Manufacturer name, e.g. "Hewlett-Packard" */
   TW_STR32   ProductFamily;   /* Product family name, e.g. "ScanJet"       */
   TW_STR32   ProductName;     /* Product name, e.g. "ScanJet Plus"         */
} TW_IDENTITY, FAR * pTW_IDENTITY;

/* DAT_IMAGEINFO. Application gets detailed image info from DS with this. */
typedef struct {
   TW_FIX32   XResolution;      /* Resolution in the horizontal             */
   TW_FIX32   YResolution;      /* Resolution in the vertical               */
   TW_INT32   ImageWidth;       /* Columns in the image, -1 if unknown by DS*/
   TW_INT32   ImageLength;      /* Rows in the image, -1 if unknown by DS   */
   TW_INT16   SamplesPerPixel;  /* Number of samples per pixel, 3 for RGB   */
   TW_INT16   BitsPerSample[8]; /* Number of bits for each sample           */
   TW_INT16   BitsPerPixel;     /* Number of bits for each padded pixel     */
   TW_BOOL    Planar;           /* True if Planar, False if chunky          */
   TW_INT16   PixelType;        /* How to interp data; photo interp (TWPT_) */
   TW_UINT16  Compression;      /* How the data is compressed (TWCP_xxxx)   */
} TW_IMAGEINFO, FAR * pTW_IMAGEINFO;

/* DAT_IMAGELAYOUT. Provides image layout information in current units. */
typedef struct {
   TW_FRAME   Frame;          /* Frame coords within larger document */
   TW_UINT32  DocumentNumber;
   TW_UINT32  PageNumber;     /* Reset when you go to next document  */
   TW_UINT32  FrameNumber;    /* Reset when you go to next page      */
} TW_IMAGELAYOUT, FAR * pTW_IMAGELAYOUT;

/* No DAT needed.  Used to manage memory buffers. */
typedef struct {
   TW_UINT32  Flags;  /* Any combination of the TWMF_ constants.           */
   TW_UINT32  Length; /* Number of bytes stored in buffer TheMem.          */
   TW_MEMREF  TheMem; /* Pointer or handle to the allocated memory buffer. */
} TW_MEMORY, FAR * pTW_MEMORY;

/* DAT_IMAGEMEMXFER. Used to pass image data (e.g. in strips) from DS to application.*/
typedef struct {
   TW_UINT16  Compression;  /* How the data is compressed                */
   TW_UINT32  BytesPerRow;  /* Number of bytes in a row of data          */
   TW_UINT32  Columns;      /* How many columns                          */
   TW_UINT32  Rows;         /* How many rows                             */
   TW_UINT32  XOffset;      /* How far from the side of the image        */
   TW_UINT32  YOffset;      /* How far from the top of the image         */
   TW_UINT32  BytesWritten; /* How many bytes written in Memory          */
   TW_MEMORY  Memory;       /* Mem struct used to pass actual image data */
} TW_IMAGEMEMXFER, FAR * pTW_IMAGEMEMXFER;

/* Changed in 1.1: QuantTable, HuffmanDC, HuffmanAC TW_MEMREF -> TW_MEMORY  */
/* DAT_JPEGCOMPRESSION. Based on JPEG Draft International Std, ver 10918-1. */
typedef struct {
   TW_UINT16   ColorSpace;       /* One of the TWPT_xxxx values                */
   TW_UINT32   SubSampling;      /* Two word "array" for subsampling values    */
   TW_UINT16   NumComponents;    /* Number of color components in image        */
   TW_UINT16   RestartFrequency; /* Frequency of restart marker codes in MDU's */
   TW_UINT16   QuantMap[4];      /* Mapping of components to QuantTables       */
   TW_MEMORY   QuantTable[4];    /* Quantization tables                        */
   TW_UINT16   HuffmanMap[4];    /* Mapping of components to Huffman tables    */
   TW_MEMORY   HuffmanDC[2];     /* DC Huffman tables                          */
   TW_MEMORY   HuffmanAC[2];     /* AC Huffman tables                          */
} TW_JPEGCOMPRESSION, FAR * pTW_JPEGCOMPRESSION;

/* TWON_ONEVALUE. Container for one value. */
typedef struct {
   TW_UINT16  ItemType;
   TW_UINT32  Item;
} TW_ONEVALUE, FAR * pTW_ONEVALUE;

/* DAT_PALETTE8. Color palette when TWPT_PALETTE pixels xfer'd in mem buf. */
typedef struct {
   TW_UINT16    NumColors;   /* Number of colors in the color table.  */
   TW_UINT16    PaletteType; /* TWPA_xxxx, specifies type of palette. */
   TW_ELEMENT8  Colors[256]; /* Array of palette values starts here.  */
} TW_PALETTE8, FAR * pTW_PALETTE8;

/* DAT_PASSTHRU, device dependant data to pass through Data Source */
typedef struct {
   TW_MEMREF  pCommand;        /* Pointer to Command buffer */
   TW_UINT32  CommandBytes;    /* Number of bytes in Command buffer */
   TW_INT32   Direction;       /* One of the TWDR_xxxx values.  Defines the direction of data flow */
   TW_MEMREF  pData;           /* Pointer to Data buffer */
   TW_UINT32  DataBytes;       /* Number of bytes in Data buffer */
   TW_UINT32  DataBytesXfered; /* Number of bytes successfully transferred */
} TW_PASSTHRU, FAR * pTW_PASSTHRU;

/* DAT_PENDINGXFERS. Used with MSG_ENDXFER to indicate additional data. */
typedef struct {
   TW_UINT16 Count;
   union {
      TW_UINT32 EOJ;
      TW_UINT32 Reserved;
   };
} TW_PENDINGXFERS, FAR *pTW_PENDINGXFERS;

/* TWON_RANGE. Container for a range of values. */
typedef struct {
   TW_UINT16  ItemType;
   TW_UINT32  MinValue;     /* Starting value in the range.           */
   TW_UINT32  MaxValue;     /* Final value in the range.              */
   TW_UINT32  StepSize;     /* Increment from MinValue to MaxValue.   */
   TW_UINT32  DefaultValue; /* Power-up value.                        */
   TW_UINT32  CurrentValue; /* The value that is currently in effect. */
} TW_RANGE, FAR * pTW_RANGE;

/* DAT_RGBRESPONSE */
typedef struct {
   TW_ELEMENT8         Response[1];
} TW_RGBRESPONSE, FAR * pTW_RGBRESPONSE;

/* DAT_SETUPFILEXFER. Sets up DS to application data transfer via a file. */
typedef struct {
   TW_STR255 FileName;
   TW_UINT16 Format;   /* Any TWFF_ constant */
   TW_INT16  VRefNum;  /* Used for Mac only  */
} TW_SETUPFILEXFER, FAR * pTW_SETUPFILEXFER;

/* DAT_SETUPMEMXFER. Sets up DS to application data transfer via a memory buffer. */
typedef struct {
   TW_UINT32 MinBufSize;
   TW_UINT32 MaxBufSize;
   TW_UINT32 Preferred;
} TW_SETUPMEMXFER, FAR * pTW_SETUPMEMXFER;

/* DAT_STATUS. Application gets detailed status info from a data source with this. */
typedef struct {
   TW_UINT16  ConditionCode;  /* Any TWCC_ constant     */
   union {
     TW_UINT16  Data;         /* output (TWAIN 2.1 and newer) This field contains additional data. */
     TW_UINT16  Reserved;     /* output (TWAIN 2.0 and older) */
   };
} TW_STATUS, FAR * pTW_STATUS;

/* DAT_STATUSUTF8. Application gets detailed UTF8 status info from a data source with this.  Added 2.1 */
typedef struct {
   TW_STATUS    Status;         /* input  TW_STATUS data received from a previous call to DG_CONTROL / DAT_STATUS / MSG_GET. */
   TW_UINT32    Size;           /* output Total number of bytes in the UTF8string, plus the terminating NUL byte.  This is not the same as the total number of characters in the string. */
   TW_HANDLE    UTF8string;     /* output TW_HANDLE to a UTF-8 encoded localized string (based on TW_IDENTITY.Language or CAP_LANGUAGE).  The Source allocates it, the Application frees it. */
} TW_STATUSUTF8, FAR * pTW_STATUSUTF8;

/* DAT_USERINTERFACE. Coordinates UI between application and data source. */
typedef struct {
   TW_BOOL    ShowUI;  /* TRUE if DS should bring up its UI           */
   TW_BOOL    ModalUI; /* For Mac only - true if the DS's UI is modal */
   TW_HANDLE  hParent; /* For windows only - Application window handle        */
} TW_USERINTERFACE, FAR * pTW_USERINTERFACE;



/****************************************************************************
 * Generic Constants                                                        *
 ****************************************************************************/

#define TWON_ARRAY           3 /* indicates TW_ARRAY container       */
#define TWON_ENUMERATION     4 /* indicates TW_ENUMERATION container */
#define TWON_ONEVALUE        5 /* indicates TW_ONEVALUE container    */
#define TWON_RANGE           6 /* indicates TW_RANGE container       */

#define TWON_ICONID          962 /* res Id of icon used in USERSELECT lbox */
#define TWON_DSMID           461 /* res Id of the DSM version num resource */
#define TWON_DSMCODEID       63  /* res Id of the Mac SM Code resource     */

#define TWON_DONTCARE8       0xff
#define TWON_DONTCARE16      0xffff
#define TWON_DONTCARE32      0xffffffff

/* Flags used in TW_MEMORY structure. */
#define TWMF_APPOWNS     0x1
#define TWMF_DSMOWNS     0x2
#define TWMF_DSOWNS      0x4
#define TWMF_POINTER     0x8
#define TWMF_HANDLE      0x10

/* There are four containers used for capabilities negotiation:
 *    TWON_ONEVALUE, TWON_RANGE, TWON_ENUMERATION, TWON_ARRAY
 * In each container structure ItemType can be TWTY_INT8, TWTY_INT16, etc.
 * The kind of data stored in the container can be determined by doing
 * DCItemSize[ItemType] where the following is defined in TWAIN glue code:
 *          DCItemSize[]= { sizeof(TW_INT8),
 *                          sizeof(TW_INT16),
 *                          etc.
 *                          sizeof(TW_UINT32) };
 *
 */

#define TWTY_INT8        0x0000    /* Means Item is a TW_INT8   */
#define TWTY_INT16       0x0001    /* Means Item is a TW_INT16  */
#define TWTY_INT32       0x0002    /* Means Item is a TW_INT32  */

#define TWTY_UINT8       0x0003    /* Means Item is a TW_UINT8  */
#define TWTY_UINT16      0x0004    /* Means Item is a TW_UINT16 */
#define TWTY_UINT32      0x0005    /* Means Item is a TW_UINT32 */

#define TWTY_BOOL        0x0006    /* Means Item is a TW_BOOL   */

#define TWTY_FIX32       0x0007    /* Means Item is a TW_FIX32  */

#define TWTY_FRAME       0x0008    /* Means Item is a TW_FRAME  */

#define TWTY_STR32       0x0009    /* Means Item is a TW_STR32  */
#define TWTY_STR64       0x000a    /* Means Item is a TW_STR64  */
#define TWTY_STR128      0x000b    /* Means Item is a TW_STR128 */
#define TWTY_STR255      0x000c    /* Means Item is a TW_STR255 */
#define TWTY_HANDLE      0x000f    /* Means Item is a TW_HANDLE */


/****************************************************************************
 * Capability Constants                                                     *
 ****************************************************************************/

/* CAP_ALARMS values (AL_ means alarms) Added 1.8  */
#define TWAL_ALARM               0
#define TWAL_FEEDERERROR         1
#define TWAL_FEEDERWARNING       2
#define TWAL_BARCODE             3
#define TWAL_DOUBLEFEED          4
#define TWAL_JAM                 5
#define TWAL_PATCHCODE           6
#define TWAL_POWER               7
#define TWAL_SKEW                8

/* ICAP_AUTOSIZE values Added 2.0 */
#define TWAS_NONE                0
#define TWAS_AUTO                1
#define TWAS_CURRENT             2

/* TWEI_BARCODEROTATION values (BCOR_ means barcode rotation) Added 1.7 */
#define TWBCOR_ROT0              0
#define TWBCOR_ROT90             1
#define TWBCOR_ROT180            2
#define TWBCOR_ROT270            3
#define TWBCOR_ROTX              4

/* ICAP_BARCODESEARCHMODE values (TWBD_ means search) */
#define TWBD_HORZ                0
#define TWBD_VERT                1
#define TWBD_HORZVERT            2
#define TWBD_VERTHORZ            3

/* ICAP_BITORDER values (BO_ means Bit Order) */
#define TWBO_LSBFIRST            0
#define TWBO_MSBFIRST            1

/* ICAP_AUTODISCARDBLANKPAGES values Added 2.0 */
#define TWBP_DISABLE            -2
#define TWBP_AUTO               -1

/* ICAP_BITDEPTHREDUCTION values (BR_ means Bitdepth Reduction) Added 1.5 */
#define TWBR_THRESHOLD           0
#define TWBR_HALFTONE            1
#define TWBR_CUSTHALFTONE        2
#define TWBR_DIFFUSION           3

/* ICAP_SUPPORTEDBARCODETYPES and TWEI_BARCODETYPE values Added 1.7 */
#define TWBT_3OF9                 0
#define TWBT_2OF5INTERLEAVED      1
#define TWBT_2OF5NONINTERLEAVED   2
#define TWBT_CODE93               3
#define TWBT_CODE128              4
#define TWBT_UCC128               5
#define TWBT_CODABAR              6
#define TWBT_UPCA                 7
#define TWBT_UPCE                 8
#define TWBT_EAN8                 9
#define TWBT_EAN13                10
#define TWBT_POSTNET              11
#define TWBT_PDF417               12
#define TWBT_2OF5INDUSTRIAL       13 /* Added 1.8 */
#define TWBT_2OF5MATRIX           14 /* Added 1.8 */
#define TWBT_2OF5DATALOGIC        15 /* Added 1.8 */
#define TWBT_2OF5IATA             16 /* Added 1.8 */
#define TWBT_3OF9FULLASCII        17 /* Added 1.8 */
#define TWBT_CODABARWITHSTARTSTOP 18 /* Added 1.8 */
#define TWBT_MAXICODE             19 /* Added 1.8 */

/* ICAP_COMPRESSION values (CP_ means ComPression ) */
#define TWCP_NONE                0
#define TWCP_PACKBITS            1
#define TWCP_GROUP31D            2 /* Follows CCITT spec (no End Of Line)          */
#define TWCP_GROUP31DEOL         3 /* Follows CCITT spec (has End Of Line)         */
#define TWCP_GROUP32D            4 /* Follows CCITT spec (use cap for K Factor)    */
#define TWCP_GROUP4              5 /* Follows CCITT spec                           */
#define TWCP_JPEG                6 /* Use capability for more info                 */
#define TWCP_LZW                 7 /* Must license from Unisys and IBM to use      */
#define TWCP_JBIG                8 /* For Bitonal images  -- Added 1.7 KHL         */
#define TWCP_PNG                 9 /* Added 1.8 */
#define TWCP_RLE4               10 /* Added 1.8 */
#define TWCP_RLE8               11 /* Added 1.8 */
#define TWCP_BITFIELDS          12 /* Added 1.8 */

/* CAP_CAMERASIDE and TWEI_PAGESIDE values (CS_ means camera side) Added 1.91 */
#define TWCS_BOTH                0
#define TWCS_TOP                 1
#define TWCS_BOTTOM              2

/* CAP_CLEARBUFFERS values (CB_ means clear buffers) */
#define TWCB_AUTO                0
#define TWCB_CLEAR               1
#define TWCB_NOCLEAR             2

/* CAP_DEVICEEVENT values (DE_ means device event) */
#define TWDE_CUSTOMEVENTS           0x8000
#define TWDE_CHECKAUTOMATICCAPTURE  0
#define TWDE_CHECKBATTERY           1
#define TWDE_CHECKDEVICEONLINE      2
#define TWDE_CHECKFLASH             3
#define TWDE_CHECKPOWERSUPPLY       4
#define TWDE_CHECKRESOLUTION        5
#define TWDE_DEVICEADDED            6
#define TWDE_DEVICEOFFLINE          7
#define TWDE_DEVICEREADY            8
#define TWDE_DEVICEREMOVED          9
#define TWDE_IMAGECAPTURED          10
#define TWDE_IMAGEDELETED           11
#define TWDE_PAPERDOUBLEFEED        12
#define TWDE_PAPERJAM               13
#define TWDE_LAMPFAILURE            14
#define TWDE_POWERSAVE              15
#define TWDE_POWERSAVENOTIFY        16

/* TW_PASSTHRU.Direction values.  Added 1.8 */
#define TWDR_GET                 1
#define TWDR_SET                 2

/* TWEI_DESKEWSTATUS values Added 1.7 */
#define TWDSK_SUCCESS            0
#define TWDSK_REPORTONLY         1
#define TWDSK_FAIL               2
#define TWDSK_DISABLED           3

/* CAP_DUPLEX values Added 1.7 */
#define TWDX_NONE                0
#define TWDX_1PASSDUPLEX         1
#define TWDX_2PASSDUPLEX         2

/* CAP_FEEDERALIGNMENT values (FA_ means feeder alignment) */
#define TWFA_NONE                0
#define TWFA_LEFT                1
#define TWFA_CENTER              2
#define TWFA_RIGHT               3

/* ICAP_FEEDERTYPE */
#define TWFE_GENERAL             0
#define TWFE_PHOTO               1

/* ICAP_IMAGEFILEFORMAT values (FF_means File Format)   */
#define TWFF_TIFF                0    /* Tagged Image File Format     */
#define TWFF_PICT                1    /* Macintosh PICT               */
#define TWFF_BMP                 2    /* Windows Bitmap               */
#define TWFF_XBM                 3    /* X-Windows Bitmap             */
#define TWFF_JFIF                4    /* JPEG File Interchange Format */
#define TWFF_FPX                 5    /* Flash Pix                    */
#define TWFF_TIFFMULTI           6    /* Multi-page tiff file         */
#define TWFF_PNG                 7
#define TWFF_SPIFF               8
#define TWFF_EXIF                9
#define TWFF_PDF                10    /* 1.91 NB: this is not PDF/A */
#define TWFF_JP2                11    /* 1.91 */
#define TWFF_JPX                13    /* 1.91 */
#define TWFF_DEJAVU             14    /* 1.91 */
#define TWFF_PDFA               15    /* 2.0 Adobe PDF/A, Version 1*/
#define TWFF_PDFA2              16    /* 2.1 Adobe PDF/A, Version 2*/

/* ICAP_FLASHUSED2 values (FL_ means flash) */
#define TWFL_NONE                0
#define TWFL_OFF                 1
#define TWFL_ON                  2
#define TWFL_AUTO                3
#define TWFL_REDEYE              4

/* CAP_FEEDERORDER values (FO_ means feeder order) */
#define TWFO_FIRSTPAGEFIRST      0
#define TWFO_LASTPAGEFIRST       1

/* CAP_FEEDERPOCKET */
#define TWFP_POCKETERROR         0
#define TWFP_POCKET1             1
#define TWFP_POCKET2             2
#define TWFP_POCKET3             3
#define TWFP_POCKET4             4
#define TWFP_POCKET5             5
#define TWFP_POCKET6             6
#define TWFP_POCKET7             7
#define TWFP_POCKET8             8
#define TWFP_POCKET9             9
#define TWFP_POCKET10           10
#define TWFP_POCKET11           11
#define TWFP_POCKET12           12
#define TWFP_POCKET13           13
#define TWFP_POCKET14           14
#define TWFP_POCKET15           15
#define TWFP_POCKET16           16

/* ICAP_FLIPROTATION values (FR_ means flip rotation) */
#define TWFR_BOOK                0
#define TWFR_FANFOLD             1

/* ICAP_FILTER values (FT_ means Filter Type) */
#define TWFT_RED                 0
#define TWFT_GREEN               1
#define TWFT_BLUE                2
#define TWFT_NONE                3
#define TWFT_WHITE               4
#define TWFT_CYAN                5
#define TWFT_MAGENTA             6
#define TWFT_YELLOW              7
#define TWFT_BLACK               8

/* TW_FILESYSTEM.FileType values (FY_ means file type) */
#define TWFY_CAMERA              0
#define TWFY_CAMERATOP           1
#define TWFY_CAMERABOTTOM        2
#define TWFY_CAMERAPREVIEW       3
#define TWFY_DOMAIN              4
#define TWFY_HOST                5
#define TWFY_DIRECTORY           6
#define TWFY_IMAGE               7
#define TWFY_UNKNOWN             8

/* ICAP_ICCPROFILE */
#define TWIC_NONE                0
#define TWIC_LINK                1
#define TWIC_EMBED               2

/* ICAP_IMAGEFILTER values (IF_ means image filter) */
#define TWIF_NONE                0
#define TWIF_AUTO                1
#define TWIF_LOWPASS             2
#define TWIF_BANDPASS            3
#define TWIF_HIGHPASS            4
#define TWIF_TEXT                TWIF_BANDPASS
#define TWIF_FINELINE            TWIF_HIGHPASS

/* ICAP_IMAGEMERGE values (IM_ means image merge) */
#define TWIM_NONE                0
#define TWIM_FRONTONTOP          1
#define TWIM_FRONTONBOTTOM       2
#define TWIM_FRONTONLEFT         3
#define TWIM_FRONTONRIGHT        4

/* CAP_JOBCONTROL values Added 1.7  */
#define TWJC_NONE                0
#define TWJC_JSIC                1
#define TWJC_JSIS                2
#define TWJC_JSXC                3
#define TWJC_JSXS                4

/* ICAP_JPEGQUALITY values (JQ_ means jpeg quality) */
#define TWJQ_UNKNOWN            -4
#define TWJQ_LOW                -3
#define TWJQ_MEDIUM             -2
#define TWJQ_HIGH               -1

/* ICAP_LIGHTPATH values (LP_ means Light Path) */
#define TWLP_REFLECTIVE          0
#define TWLP_TRANSMISSIVE        1

/* ICAP_LIGHTSOURCE values (LS_ means Light Source) */
#define TWLS_RED                 0
#define TWLS_GREEN               1
#define TWLS_BLUE                2
#define TWLS_NONE                3
#define TWLS_WHITE               4
#define TWLS_UV                  5
#define TWLS_IR                  6

/* TWEI_MAGTYPE values (MD_ means Mag Type) Added 2.0 */
#define TWMD_MICR                0  /* Added 2.0 */
#define TWMD_RAW                 1  /* added 2.1 */
#define TWMD_INVALID             2  /* added 2.1 */

/* ICAP_NOISEFILTER values (NF_ means noise filter) */
#define TWNF_NONE                0
#define TWNF_AUTO                1
#define TWNF_LONEPIXEL           2
#define TWNF_MAJORITYRULE        3

/* ICAP_ORIENTATION values (OR_ means ORientation) */
#define TWOR_ROT0                0
#define TWOR_ROT90               1
#define TWOR_ROT180              2
#define TWOR_ROT270              3
#define TWOR_PORTRAIT            TWOR_ROT0
#define TWOR_LANDSCAPE           TWOR_ROT270
#define TWOR_AUTO                4           /* 2.0 */
#define TWOR_AUTOTEXT            5           /* 2.0 */
#define TWOR_AUTOPICTURE         6           /* 2.0 */

/* ICAP_OVERSCAN values (OV_ means overscan) */
#define TWOV_NONE                0
#define TWOV_AUTO                1
#define TWOV_TOPBOTTOM           2
#define TWOV_LEFTRIGHT           3
#define TWOV_ALL                 4

/* Palette types for TW_PALETTE8 */
#define TWPA_RGB         0
#define TWPA_GRAY        1
#define TWPA_CMY         2

/* ICAP_PLANARCHUNKY values (PC_ means Planar/Chunky ) */
#define TWPC_CHUNKY              0
#define TWPC_PLANAR              1

/* TWEI_PATCHCODE values Added 1.7 */
#define TWPCH_PATCH1             0
#define TWPCH_PATCH2             1
#define TWPCH_PATCH3             2
#define TWPCH_PATCH4             3
#define TWPCH_PATCH6             4
#define TWPCH_PATCHT             5

/* ICAP_PIXELFLAVOR values (PF_ means Pixel Flavor) */
#define TWPF_CHOCOLATE           0  /* zero pixel represents darkest shade  */
#define TWPF_VANILLA             1  /* zero pixel represents lightest shade */

/* CAP_PRINTERMODE values (PM_ means printer mode) */
#define TWPM_SINGLESTRING        0
#define TWPM_MULTISTRING         1
#define TWPM_COMPOUNDSTRING      2

/* CAP_PRINTER values (PR_ means printer) */
#define TWPR_IMPRINTERTOPBEFORE     0
#define TWPR_IMPRINTERTOPAFTER      1
#define TWPR_IMPRINTERBOTTOMBEFORE  2
#define TWPR_IMPRINTERBOTTOMAFTER   3
#define TWPR_ENDORSERTOPBEFORE      4
#define TWPR_ENDORSERTOPAFTER       5
#define TWPR_ENDORSERBOTTOMBEFORE   6
#define TWPR_ENDORSERBOTTOMAFTER    7

/* CAP_POWERSUPPLY values (PS_ means power supply) */
#define TWPS_EXTERNAL            0
#define TWPS_BATTERY             1

/* ICAP_PIXELTYPE values (PT_ means Pixel Type) */
#define TWPT_BW                  0 /* Black and White */
#define TWPT_GRAY                1
#define TWPT_RGB                 2
#define TWPT_PALETTE             3
#define TWPT_CMY                 4
#define TWPT_CMYK                5
#define TWPT_YUV                 6
#define TWPT_YUVK                7
#define TWPT_CIEXYZ              8
#define TWPT_LAB                 9
#define TWPT_SRGB               10 /* 1.91 */
#define TWPT_SCRGB              11 /* 1.91 */
#define TWPT_INFRARED           16 /* 2.0 */

/* CAP_SEGMENTED values (SG_ means segmented) Added 1.91 */
#define TWSG_NONE                0
#define TWSG_AUTO                1

/* ICAP_SUPPORTEDSIZES values (SS_ means Supported Sizes) */
#define TWSS_NONE                0
#define TWSS_A4                  1
#define TWSS_JISB5               2
#define TWSS_USLETTER            3
#define TWSS_USLEGAL             4
/* Added 1.5 */
#define TWSS_A5                  5
#define TWSS_ISOB4               6
#define TWSS_ISOB6               7
/* Added 1.7 */
#define TWSS_USLEDGER            9
#define TWSS_USEXECUTIVE        10
#define TWSS_A3                 11
#define TWSS_ISOB3              12
#define TWSS_A6                 13
#define TWSS_C4                 14
#define TWSS_C5                 15
#define TWSS_C6                 16
/* Added 1.8 */
#define TWSS_4A0                17
#define TWSS_2A0                18
#define TWSS_A0                 19
#define TWSS_A1                 20
#define TWSS_A2                 21
#define TWSS_A7                 22
#define TWSS_A8                 23
#define TWSS_A9                 24
#define TWSS_A10                25
#define TWSS_ISOB0              26
#define TWSS_ISOB1              27
#define TWSS_ISOB2              28
#define TWSS_ISOB5              29
#define TWSS_ISOB7              30
#define TWSS_ISOB8              31
#define TWSS_ISOB9              32
#define TWSS_ISOB10             33
#define TWSS_JISB0              34
#define TWSS_JISB1              35
#define TWSS_JISB2              36
#define TWSS_JISB3              37
#define TWSS_JISB4              38
#define TWSS_JISB6              39
#define TWSS_JISB7              40
#define TWSS_JISB8              41
#define TWSS_JISB9              42
#define TWSS_JISB10             43
#define TWSS_C0                 44
#define TWSS_C1                 45
#define TWSS_C2                 46
#define TWSS_C3                 47
#define TWSS_C7                 48
#define TWSS_C8                 49
#define TWSS_C9                 50
#define TWSS_C10                51
#define TWSS_USSTATEMENT        52
#define TWSS_BUSINESSCARD       53
#define TWSS_MAXSIZE            54  /* Added 2.1 */

/* ICAP_XFERMECH values (SX_ means Setup XFer) */
#define TWSX_NATIVE              0
#define TWSX_FILE                1
#define TWSX_MEMORY              2
#define TWSX_MEMFILE             4    /* added 1.91 */

/* ICAP_UNITS values (UN_ means UNits) */
#define TWUN_INCHES              0
#define TWUN_CENTIMETERS         1
#define TWUN_PICAS               2
#define TWUN_POINTS              3
#define TWUN_TWIPS               4
#define TWUN_PIXELS              5
#define TWUN_MILLIMETERS         6    /* added 1.91 */


/****************************************************************************
 * Country Constants                                                        *
 ****************************************************************************/

#define TWCY_AFGHANISTAN   1001
#define TWCY_ALGERIA        213
#define TWCY_AMERICANSAMOA  684
#define TWCY_ANDORRA        033
#define TWCY_ANGOLA        1002
#define TWCY_ANGUILLA      8090
#define TWCY_ANTIGUA       8091
#define TWCY_ARGENTINA       54
#define TWCY_ARUBA          297
#define TWCY_ASCENSIONI     247
#define TWCY_AUSTRALIA       61
#define TWCY_AUSTRIA         43
#define TWCY_BAHAMAS       8092
#define TWCY_BAHRAIN        973
#define TWCY_BANGLADESH     880
#define TWCY_BARBADOS      8093
#define TWCY_BELGIUM         32
#define TWCY_BELIZE         501
#define TWCY_BENIN          229
#define TWCY_BERMUDA       8094
#define TWCY_BHUTAN        1003
#define TWCY_BOLIVIA        591
#define TWCY_BOTSWANA       267
#define TWCY_BRITAIN          6
#define TWCY_BRITVIRGINIS  8095
#define TWCY_BRAZIL          55
#define TWCY_BRUNEI         673
#define TWCY_BULGARIA       359
#define TWCY_BURKINAFASO   1004
#define TWCY_BURMA         1005
#define TWCY_BURUNDI       1006
#define TWCY_CAMAROON       237
#define TWCY_CANADA           2
#define TWCY_CAPEVERDEIS    238
#define TWCY_CAYMANIS      8096
#define TWCY_CENTRALAFREP  1007
#define TWCY_CHAD          1008
#define TWCY_CHILE           56
#define TWCY_CHINA           86
#define TWCY_CHRISTMASIS   1009
#define TWCY_COCOSIS       1009
#define TWCY_COLOMBIA        57
#define TWCY_COMOROS       1010
#define TWCY_CONGO         1011
#define TWCY_COOKIS        1012
#define TWCY_COSTARICA     506
#define TWCY_CUBA           005
#define TWCY_CYPRUS         357
#define TWCY_CZECHOSLOVAKIA  42
#define TWCY_DENMARK         45
#define TWCY_DJIBOUTI      1013
#define TWCY_DOMINICA      8097
#define TWCY_DOMINCANREP   8098
#define TWCY_EASTERIS      1014
#define TWCY_ECUADOR        593
#define TWCY_EGYPT           20
#define TWCY_ELSALVADOR     503
#define TWCY_EQGUINEA      1015
#define TWCY_ETHIOPIA       251
#define TWCY_FALKLANDIS    1016
#define TWCY_FAEROEIS       298
#define TWCY_FIJIISLANDS    679
#define TWCY_FINLAND        358
#define TWCY_FRANCE          33
#define TWCY_FRANTILLES     596
#define TWCY_FRGUIANA       594
#define TWCY_FRPOLYNEISA    689
#define TWCY_FUTANAIS      1043
#define TWCY_GABON          241
#define TWCY_GAMBIA         220
#define TWCY_GERMANY         49
#define TWCY_GHANA          233
#define TWCY_GIBRALTER      350
#define TWCY_GREECE          30
#define TWCY_GREENLAND      299
#define TWCY_GRENADA       8099
#define TWCY_GRENEDINES    8015
#define TWCY_GUADELOUPE     590
#define TWCY_GUAM           671
#define TWCY_GUANTANAMOBAY 5399
#define TWCY_GUATEMALA      502
#define TWCY_GUINEA         224
#define TWCY_GUINEABISSAU  1017
#define TWCY_GUYANA         592
#define TWCY_HAITI          509
#define TWCY_HONDURAS       504
#define TWCY_HONGKONG      852
#define TWCY_HUNGARY         36
#define TWCY_ICELAND        354
#define TWCY_INDIA           91
#define TWCY_INDONESIA       62
#define TWCY_IRAN            98
#define TWCY_IRAQ           964
#define TWCY_IRELAND        353
#define TWCY_ISRAEL         972
#define TWCY_ITALY           39
#define TWCY_IVORYCOAST    225
#define TWCY_JAMAICA       8010
#define TWCY_JAPAN           81
#define TWCY_JORDAN         962
#define TWCY_KENYA          254
#define TWCY_KIRIBATI      1018
#define TWCY_KOREA           82
#define TWCY_KUWAIT         965
#define TWCY_LAOS          1019
#define TWCY_LEBANON       1020
#define TWCY_LIBERIA        231
#define TWCY_LIBYA          218
#define TWCY_LIECHTENSTEIN   41
#define TWCY_LUXENBOURG     352
#define TWCY_MACAO          853
#define TWCY_MADAGASCAR    1021
#define TWCY_MALAWI         265
#define TWCY_MALAYSIA        60
#define TWCY_MALDIVES       960
#define TWCY_MALI          1022
#define TWCY_MALTA          356
#define TWCY_MARSHALLIS     692
#define TWCY_MAURITANIA    1023
#define TWCY_MAURITIUS      230
#define TWCY_MEXICO           3
#define TWCY_MICRONESIA     691
#define TWCY_MIQUELON       508
#define TWCY_MONACO          33
#define TWCY_MONGOLIA      1024
#define TWCY_MONTSERRAT    8011
#define TWCY_MOROCCO        212
#define TWCY_MOZAMBIQUE    1025
#define TWCY_NAMIBIA        264
#define TWCY_NAURU         1026
#define TWCY_NEPAL          977
#define TWCY_NETHERLANDS     31
#define TWCY_NETHANTILLES   599
#define TWCY_NEVIS         8012
#define TWCY_NEWCALEDONIA   687
#define TWCY_NEWZEALAND      64
#define TWCY_NICARAGUA      505
#define TWCY_NIGER          227
#define TWCY_NIGERIA        234
#define TWCY_NIUE          1027
#define TWCY_NORFOLKI      1028
#define TWCY_NORWAY          47
#define TWCY_OMAN           968
#define TWCY_PAKISTAN        92
#define TWCY_PALAU         1029
#define TWCY_PANAMA         507
#define TWCY_PARAGUAY       595
#define TWCY_PERU            51
#define TWCY_PHILLIPPINES    63
#define TWCY_PITCAIRNIS    1030
#define TWCY_PNEWGUINEA     675
#define TWCY_POLAND          48
#define TWCY_PORTUGAL       351
#define TWCY_QATAR          974
#define TWCY_REUNIONI      1031
#define TWCY_ROMANIA         40
#define TWCY_RWANDA         250
#define TWCY_SAIPAN         670
#define TWCY_SANMARINO       39
#define TWCY_SAOTOME       1033
#define TWCY_SAUDIARABIA    966
#define TWCY_SENEGAL        221
#define TWCY_SEYCHELLESIS  1034
#define TWCY_SIERRALEONE   1035
#define TWCY_SINGAPORE       65
#define TWCY_SOLOMONIS     1036
#define TWCY_SOMALI        1037
#define TWCY_SOUTHAFRICA    27
#define TWCY_SPAIN           34
#define TWCY_SRILANKA        94
#define TWCY_STHELENA      1032
#define TWCY_STKITTS       8013
#define TWCY_STLUCIA       8014
#define TWCY_STPIERRE       508
#define TWCY_STVINCENT     8015
#define TWCY_SUDAN         1038
#define TWCY_SURINAME       597
#define TWCY_SWAZILAND      268
#define TWCY_SWEDEN          46
#define TWCY_SWITZERLAND     41
#define TWCY_SYRIA         1039
#define TWCY_TAIWAN         886
#define TWCY_TANZANIA       255
#define TWCY_THAILAND        66
#define TWCY_TOBAGO        8016
#define TWCY_TOGO           228
#define TWCY_TONGAIS        676
#define TWCY_TRINIDAD      8016
#define TWCY_TUNISIA        216
#define TWCY_TURKEY          90
#define TWCY_TURKSCAICOS   8017
#define TWCY_TUVALU        1040
#define TWCY_UGANDA         256
#define TWCY_USSR             7
#define TWCY_UAEMIRATES     971
#define TWCY_UNITEDKINGDOM   44
#define TWCY_USA              1
#define TWCY_URUGUAY        598
#define TWCY_VANUATU       1041
#define TWCY_VATICANCITY     39
#define TWCY_VENEZUELA       58
#define TWCY_WAKE          1042
#define TWCY_WALLISIS      1043
#define TWCY_WESTERNSAHARA 1044
#define TWCY_WESTERNSAMOA  1045
#define TWCY_YEMEN         1046
#define TWCY_YUGOSLAVIA      38
#define TWCY_ZAIRE          243
#define TWCY_ZAMBIA         260
#define TWCY_ZIMBABWE       263
/* Added for 1.8 */
#define TWCY_ALBANIA        355
#define TWCY_ARMENIA        374
#define TWCY_AZERBAIJAN     994
#define TWCY_BELARUS        375
#define TWCY_BOSNIAHERZGO   387
#define TWCY_CAMBODIA       855
#define TWCY_CROATIA        385
#define TWCY_CZECHREPUBLIC  420
#define TWCY_DIEGOGARCIA    246
#define TWCY_ERITREA        291
#define TWCY_ESTONIA        372
#define TWCY_GEORGIA        995
#define TWCY_LATVIA         371
#define TWCY_LESOTHO        266
#define TWCY_LITHUANIA      370
#define TWCY_MACEDONIA      389
#define TWCY_MAYOTTEIS      269
#define TWCY_MOLDOVA        373
#define TWCY_MYANMAR        95
#define TWCY_NORTHKOREA     850
#define TWCY_PUERTORICO     787
#define TWCY_RUSSIA         7
#define TWCY_SERBIA         381
#define TWCY_SLOVAKIA       421
#define TWCY_SLOVENIA       386
#define TWCY_SOUTHKOREA     82
#define TWCY_UKRAINE        380
#define TWCY_USVIRGINIS     340
#define TWCY_VIETNAM        84

/****************************************************************************
 * Language Constants                                                       *
 ****************************************************************************/
/* Added for 1.8 */
#define TWLG_USERLOCALE           -1
#define TWLG_DANISH               0    /* Danish                 */
#define TWLG_DUTCH                1    /* Dutch                  */
#define TWLG_ENGLISH              2    /* International English  */
#define TWLG_FRENCH_CANADIAN      3    /* French Canadian        */
#define TWLG_FINNISH              4    /* Finnish                */
#define TWLG_FRENCH               5    /* French                 */
#define TWLG_GERMAN               6    /* German                 */
#define TWLG_ICELANDIC            7    /* Icelandic              */
#define TWLG_ITALIAN              8    /* Italian                */
#define TWLG_NORWEGIAN            9    /* Norwegian              */
#define TWLG_PORTUGUESE           10   /* Portuguese             */
#define TWLG_SPANISH              11   /* Spanish                */
#define TWLG_SWEDISH              12   /* Swedish                */
#define TWLG_ENGLISH_USA          13   /* U.S. English           */
#define TWLG_AFRIKAANS            14
#define TWLG_ALBANIA              15
#define TWLG_ARABIC               16
#define TWLG_ARABIC_ALGERIA       17
#define TWLG_ARABIC_BAHRAIN       18
#define TWLG_ARABIC_EGYPT         19
#define TWLG_ARABIC_IRAQ          20
#define TWLG_ARABIC_JORDAN        21
#define TWLG_ARABIC_KUWAIT        22
#define TWLG_ARABIC_LEBANON       23
#define TWLG_ARABIC_LIBYA         24
#define TWLG_ARABIC_MOROCCO       25
#define TWLG_ARABIC_OMAN          26
#define TWLG_ARABIC_QATAR         27
#define TWLG_ARABIC_SAUDIARABIA   28
#define TWLG_ARABIC_SYRIA         29
#define TWLG_ARABIC_TUNISIA       30
#define TWLG_ARABIC_UAE           31 /* United Arabic Emirates */
#define TWLG_ARABIC_YEMEN         32
#define TWLG_BASQUE               33
#define TWLG_BYELORUSSIAN         34
#define TWLG_BULGARIAN            35
#define TWLG_CATALAN              36
#define TWLG_CHINESE              37
#define TWLG_CHINESE_HONGKONG     38
#define TWLG_CHINESE_PRC          39 /* People's Republic of China */
#define TWLG_CHINESE_SINGAPORE    40
#define TWLG_CHINESE_SIMPLIFIED   41
#define TWLG_CHINESE_TAIWAN       42
#define TWLG_CHINESE_TRADITIONAL  43
#define TWLG_CROATIA              44
#define TWLG_CZECH                45
#define TWLG_DUTCH_BELGIAN        46
#define TWLG_ENGLISH_AUSTRALIAN   47
#define TWLG_ENGLISH_CANADIAN     48
#define TWLG_ENGLISH_IRELAND      49
#define TWLG_ENGLISH_NEWZEALAND   50
#define TWLG_ENGLISH_SOUTHAFRICA  51
#define TWLG_ENGLISH_UK           52
#define TWLG_ESTONIAN             53
#define TWLG_FAEROESE             54
#define TWLG_FARSI                55
#define TWLG_FRENCH_BELGIAN       56
#define TWLG_FRENCH_LUXEMBOURG    57
#define TWLG_FRENCH_SWISS         58
#define TWLG_GERMAN_AUSTRIAN      59
#define TWLG_GERMAN_LUXEMBOURG    60
#define TWLG_GERMAN_LIECHTENSTEIN 61
#define TWLG_GERMAN_SWISS         62
#define TWLG_GREEK                63
#define TWLG_HEBREW               64
#define TWLG_HUNGARIAN            65
#define TWLG_INDONESIAN           66
#define TWLG_ITALIAN_SWISS        67
#define TWLG_JAPANESE             68
#define TWLG_KOREAN               69
#define TWLG_KOREAN_JOHAB         70
#define TWLG_LATVIAN              71
#define TWLG_LITHUANIAN           72
#define TWLG_NORWEGIAN_BOKMAL     73
#define TWLG_NORWEGIAN_NYNORSK    74
#define TWLG_POLISH               75
#define TWLG_PORTUGUESE_BRAZIL    76
#define TWLG_ROMANIAN             77
#define TWLG_RUSSIAN              78
#define TWLG_SERBIAN_LATIN        79
#define TWLG_SLOVAK               80
#define TWLG_SLOVENIAN            81
#define TWLG_SPANISH_MEXICAN      82
#define TWLG_SPANISH_MODERN       83
#define TWLG_THAI                 84
#define TWLG_TURKISH              85
#define TWLG_UKRANIAN             86
/* More stuff added for 1.8 */
#define TWLG_ASSAMESE             87
#define TWLG_BENGALI              88
#define TWLG_BIHARI               89
#define TWLG_BODO                 90
#define TWLG_DOGRI                91
#define TWLG_GUJARATI             92
#define TWLG_HARYANVI             93
#define TWLG_HINDI                94
#define TWLG_KANNADA              95
#define TWLG_KASHMIRI             96
#define TWLG_MALAYALAM            97
#define TWLG_MARATHI              98
#define TWLG_MARWARI              99
#define TWLG_MEGHALAYAN          100
#define TWLG_MIZO                101
#define TWLG_NAGA                102
#define TWLG_ORISSI              103
#define TWLG_PUNJABI             104
#define TWLG_PUSHTU              105
#define TWLG_SERBIAN_CYRILLIC    106
#define TWLG_SIKKIMI             107
#define TWLG_SWEDISH_FINLAND     108
#define TWLG_TAMIL               109
#define TWLG_TELUGU              110
#define TWLG_TRIPURI             111
#define TWLG_URDU                112
#define TWLG_VIETNAMESE          113

/****************************************************************************
 * Data Groups                                                              *
 ****************************************************************************/

/* More Data Groups may be added in the future.
 * Possible candidates include text, vector graphics, sound, etc.
 * NOTE: Data Group constants must be powers of 2 as they are used
 *       as bitflags when Application asks DSM to present a list of DSs.
 */

#define DG_CONTROL          0x0001L /* data pertaining to control       */
#define DG_IMAGE            0x0002L /* data pertaining to raster images */
/* Added 1.8 */
#define DG_AUDIO            0x0004L /* data pertaining to audio */

/* More Data Functionality may be added in the future.
 * These are for items that need to be determined before DS is opened.
 * NOTE: Supported Functionality constants must be powers of 2 as they are
 *       used as bitflags when Application asks DSM to present a list of DSs.
 *       to support backward capability the App and DS will not use the fields
 */
#define DF_DSM2             0x10000000L   /* added to the identity by the DSM  */
#define DF_APP2             0x20000000L   /* Set by the App to indicate it would
                                             prefer to use DSM2 */
#define DF_DS2              0x40000000L   /* Set by the DS to indicate it would
                                             prefer to use DSM2 */
#define DG_MASK             0xFFFFL       /* all Data Groups limited to 16 bit.  Added for 2.1  */

/****************************************************************************
 *                                                        *
 ****************************************************************************/
#define DAT_NULL            0x0000 /* No data or structure. */
#define DAT_CUSTOMBASE      0x8000 /* Base of custom DATs.  */

/* Data Argument Types for the DG_CONTROL Data Group. */
#define DAT_CAPABILITY      0x0001 /* TW_CAPABILITY                        */
#define DAT_EVENT           0x0002 /* TW_EVENT                             */
#define DAT_IDENTITY        0x0003 /* TW_IDENTITY                          */
#define DAT_PARENT          0x0004 /* TW_HANDLE, application win handle in Windows */
#define DAT_PENDINGXFERS    0x0005 /* TW_PENDINGXFERS                      */
#define DAT_SETUPMEMXFER    0x0006 /* TW_SETUPMEMXFER                      */
#define DAT_SETUPFILEXFER   0x0007 /* TW_SETUPFILEXFER                     */
#define DAT_STATUS          0x0008 /* TW_STATUS                            */
#define DAT_USERINTERFACE   0x0009 /* TW_USERINTERFACE                     */
#define DAT_XFERGROUP       0x000a /* TW_UINT32                            */
#define DAT_CUSTOMDSDATA    0x000c /* TW_CUSTOMDSDATA.                     */
#define DAT_DEVICEEVENT     0x000d /* TW_DEVICEEVENT     Added 1.8         */
#define DAT_FILESYSTEM      0x000e /* TW_FILESYSTEM      Added 1.8         */
#define DAT_PASSTHRU        0x000f /* TW_PASSTHRU        Added 1.8         */
#define DAT_CALLBACK        0x0010 /* TW_CALLBACK        Added 2.0         */
#define DAT_STATUSUTF8      0x0011 /* TW_STATUSUTF8      Added 2.1         */

/* Data Argument Types for the DG_IMAGE Data Group. */
#define DAT_IMAGEINFO       0x0101 /* TW_IMAGEINFO                         */
#define DAT_IMAGELAYOUT     0x0102 /* TW_IMAGELAYOUT                       */
#define DAT_IMAGEMEMXFER    0x0103 /* TW_IMAGEMEMXFER                      */
#define DAT_IMAGENATIVEXFER 0x0104 /* TW_UINT32 loword is hDIB, PICHandle  */
#define DAT_IMAGEFILEXFER   0x0105 /* Null data                            */
#define DAT_CIECOLOR        0x0106 /* TW_CIECOLOR                          */
#define DAT_GRAYRESPONSE    0x0107 /* TW_GRAYRESPONSE                      */
#define DAT_RGBRESPONSE     0x0108 /* TW_RGBRESPONSE                       */
#define DAT_JPEGCOMPRESSION 0x0109 /* TW_JPEGCOMPRESSION                   */
#define DAT_PALETTE8        0x010a /* TW_PALETTE8                          */
#define DAT_EXTIMAGEINFO    0x010b /* TW_EXTIMAGEINFO -- for 1.7 Spec.     */

/* Data Argument Types for the DG_AUDIO Data Group. */
#define DAT_AUDIOFILEXFER   0x0201 /* Null data          Added 1.8         */
#define DAT_AUDIOINFO       0x0202 /* TW_AUDIOINFO       Added 1.8         */
#define DAT_AUDIONATIVEXFER 0x0203 /* TW_UINT32 handle to WAV, (AIFF Mac) Added 1.8 */

/* misplaced */
#define DAT_ICCPROFILE        0x0401 /* TW_MEMORY        Added 1.91  This Data Argument is misplaced but belongs to the DG_IMAGE Data Group */
#define DAT_IMAGEMEMFILEXFER  0x0402 /* TW_IMAGEMEMXFER  Added 1.91  This Data Argument is misplaced but belongs to the DG_IMAGE Data Group */
#define DAT_ENTRYPOINT        0x0403 /* TW_ENTRYPOINT    Added 2.0   This Data Argument is misplaced but belongs to the DG_CONTROL Data Group */


/****************************************************************************
 * Messages                                                                 *
 ****************************************************************************/

/* All message constants are unique.
 * Messages are grouped according to which DATs they are used with.*/

#define MSG_NULL         0x0000 /* Used in TW_EVENT structure               */
#define MSG_CUSTOMBASE   0x8000 /* Base of custom messages                  */

/* Generic messages may be used with any of several DATs.                   */
#define MSG_GET             0x0001 /* Get one or more values                   */
#define MSG_GETCURRENT      0x0002 /* Get current value                        */
#define MSG_GETDEFAULT      0x0003 /* Get default (e.g. power up) value        */
#define MSG_GETFIRST        0x0004 /* Get first of a series of items, e.g. DSs */
#define MSG_GETNEXT         0x0005 /* Iterate through a series of items.       */
#define MSG_SET             0x0006 /* Set one or more values                   */
#define MSG_RESET           0x0007 /* Set current value to default value       */
#define MSG_QUERYSUPPORT    0x0008 /* Get supported operations on the cap.     */
#define MSG_GETHELP         0x0009 /* Returns help text suitable for use in a GUI        Added 2.1 */
#define MSG_GETLABEL        0x000a /* Returns a label suitable for use in a GUI          Added 2.1 */
#define MSG_GETLABELENUM    0x000b /* Return all of the labels for a capability of type  Added 2.1 */


/* Messages used with DAT_NULL                                              */
#define MSG_XFERREADY    0x0101 /* The data source has data ready           */
#define MSG_CLOSEDSREQ   0x0102 /* Request for Application. to close DS               */
#define MSG_CLOSEDSOK    0x0103 /* Tell the Application. to save the state.           */
#define MSG_DEVICEEVENT  0X0104 /* Some event has taken place               Added 1.8 */

/* Messages used with a pointer to DAT_PARENT data                          */
#define MSG_OPENDSM      0x0301 /* Open the DSM                             */
#define MSG_CLOSEDSM     0x0302 /* Close the DSM                            */

/* Messages used with a pointer to a DAT_IDENTITY structure                 */
#define MSG_OPENDS       0x0401 /* Open a data source                       */
#define MSG_CLOSEDS      0x0402 /* Close a data source                      */
#define MSG_USERSELECT   0x0403 /* Put up a dialog of all DS                */

/* Messages used with a pointer to a DAT_USERINTERFACE structure            */
#define MSG_DISABLEDS    0x0501 /* Disable data transfer in the DS          */
#define MSG_ENABLEDS     0x0502 /* Enable data transfer in the DS           */
#define MSG_ENABLEDSUIONLY  0x0503  /* Enable for saving DS state only.     */

/* Messages used with a pointer to a DAT_EVENT structure                    */
#define MSG_PROCESSEVENT 0x0601

/* Messages used with a pointer to a DAT_PENDINGXFERS structure             */
#define MSG_ENDXFER      0x0701
#define MSG_STOPFEEDER   0x0702

/* Messages used with a pointer to a DAT_FILESYSTEM structure               */
#define MSG_CHANGEDIRECTORY   0x0801 /* Added 1.8 */
#define MSG_CREATEDIRECTORY   0x0802 /* Added 1.8 */
#define MSG_DELETE            0x0803 /* Added 1.8 */
#define MSG_FORMATMEDIA       0x0804 /* Added 1.8 */
#define MSG_GETCLOSE          0x0805 /* Added 1.8 */
#define MSG_GETFIRSTFILE      0x0806 /* Added 1.8 */
#define MSG_GETINFO           0x0807 /* Added 1.8 */
#define MSG_GETNEXTFILE       0x0808 /* Added 1.8 */
#define MSG_RENAME            0x0809 /* Added 1.8 */
#define MSG_COPY              0x080A /* Added 1.8 */
#define MSG_AUTOMATICCAPTUREDIRECTORY 0x080B /* Added 1.8 */

/* Messages used with a pointer to a DAT_PASSTHRU structure                 */
#define MSG_PASSTHRU          0x0901

/* used with DAT_CALLBACK */
#define MSG_REGISTER_CALLBACK 0x0902

/* used with DAT_CAPABILITY */
#define MSG_RESETALL          0x0A01 /*  Added 1.91 */

/****************************************************************************
 * Capabilities                                                             *
 ****************************************************************************/

#define CAP_CUSTOMBASE          0x8000 /* Base of custom capabilities */

/* all data sources are REQUIRED to support these caps */
#define CAP_XFERCOUNT           0x0001

/* image data sources are REQUIRED to support these caps */
#define ICAP_COMPRESSION        0x0100
#define ICAP_PIXELTYPE          0x0101
#define ICAP_UNITS              0x0102 /* default is TWUN_INCHES */
#define ICAP_XFERMECH           0x0103

/* all data sources MAY support these caps */
#define CAP_AUTHOR                  0x1000
#define CAP_CAPTION                 0x1001
#define CAP_FEEDERENABLED           0x1002
#define CAP_FEEDERLOADED            0x1003
#define CAP_TIMEDATE                0x1004
#define CAP_SUPPORTEDCAPS           0x1005
#define CAP_EXTENDEDCAPS            0x1006
#define CAP_AUTOFEED                0x1007
#define CAP_CLEARPAGE               0x1008
#define CAP_FEEDPAGE                0x1009
#define CAP_REWINDPAGE              0x100a
#define CAP_INDICATORS              0x100b   /* Added 1.1 */
#define CAP_SUPPORTEDCAPSEXT        0x100c   /* Added 1.6 */
#define CAP_PAPERDETECTABLE         0x100d   /* Added 1.6 */
#define CAP_UICONTROLLABLE          0x100e   /* Added 1.6 */
#define CAP_DEVICEONLINE            0x100f   /* Added 1.6 */
#define CAP_AUTOSCAN                0x1010   /* Added 1.6 */
#define CAP_THUMBNAILSENABLED       0x1011   /* Added 1.7 */
#define CAP_DUPLEX                  0x1012   /* Added 1.7 */
#define CAP_DUPLEXENABLED           0x1013   /* Added 1.7 */
#define CAP_ENABLEDSUIONLY          0x1014   /* Added 1.7 */
#define CAP_CUSTOMDSDATA            0x1015   /* Added 1.7 */
#define CAP_ENDORSER                0x1016   /* Added 1.7 */
#define CAP_JOBCONTROL              0x1017   /* Added 1.7 */
#define CAP_ALARMS                  0x1018   /* Added 1.8 */
#define CAP_ALARMVOLUME             0x1019   /* Added 1.8 */
#define CAP_AUTOMATICCAPTURE        0x101a   /* Added 1.8 */
#define CAP_TIMEBEFOREFIRSTCAPTURE  0x101b   /* Added 1.8 */
#define CAP_TIMEBETWEENCAPTURES     0x101c   /* Added 1.8 */
#define CAP_CLEARBUFFERS            0x101d   /* Added 1.8 */
#define CAP_MAXBATCHBUFFERS         0x101e   /* Added 1.8 */
#define CAP_DEVICETIMEDATE          0x101f   /* Added 1.8 */
#define CAP_POWERSUPPLY             0x1020   /* Added 1.8 */
#define CAP_CAMERAPREVIEWUI         0x1021   /* Added 1.8 */
#define CAP_DEVICEEVENT             0x1022   /* Added 1.8 */
#define CAP_SERIALNUMBER            0x1024   /* Added 1.8 */
#define CAP_PRINTER                 0x1026   /* Added 1.8 */
#define CAP_PRINTERENABLED          0x1027   /* Added 1.8 */
#define CAP_PRINTERINDEX            0x1028   /* Added 1.8 */
#define CAP_PRINTERMODE             0x1029   /* Added 1.8 */
#define CAP_PRINTERSTRING           0x102a   /* Added 1.8 */
#define CAP_PRINTERSUFFIX           0x102b   /* Added 1.8 */
#define CAP_LANGUAGE                0x102c   /* Added 1.8 */
#define CAP_FEEDERALIGNMENT         0x102d   /* Added 1.8 */
#define CAP_FEEDERORDER             0x102e   /* Added 1.8 */
#define CAP_REACQUIREALLOWED        0x1030   /* Added 1.8 */
#define CAP_BATTERYMINUTES          0x1032   /* Added 1.8 */
#define CAP_BATTERYPERCENTAGE       0x1033   /* Added 1.8 */
#define CAP_CAMERASIDE              0x1034   /* Added 1.91 */
#define CAP_SEGMENTED               0x1035   /* Added 1.91 */
#define CAP_CAMERAENABLED           0x1036   /* Added 2.0 */
#define CAP_CAMERAORDER             0x1037   /* Added 2.0 */
#define CAP_MICRENABLED             0x1038   /* Added 2.0 */
#define CAP_FEEDERPREP              0x1039   /* Added 2.0 */
#define CAP_FEEDERPOCKET            0x103a   /* Added 2.0 */
#define CAP_AUTOMATICSENSEMEDIUM    0x103b   /* Added 2.1 */
#define CAP_CUSTOMINTERFACEGUID     0x103c   /* Added 2.1 */


/* image data sources MAY support these caps */
#define ICAP_AUTOBRIGHT                   0x1100
#define ICAP_BRIGHTNESS                   0x1101
#define ICAP_CONTRAST                     0x1103
#define ICAP_CUSTHALFTONE                 0x1104
#define ICAP_EXPOSURETIME                 0x1105
#define ICAP_FILTER                       0x1106
#define ICAP_FLASHUSED                    0x1107
#define ICAP_GAMMA                        0x1108
#define ICAP_HALFTONES                    0x1109
#define ICAP_HIGHLIGHT                    0x110a
#define ICAP_IMAGEFILEFORMAT              0x110c
#define ICAP_LAMPSTATE                    0x110d
#define ICAP_LIGHTSOURCE                  0x110e
#define ICAP_ORIENTATION                  0x1110
#define ICAP_PHYSICALWIDTH                0x1111
#define ICAP_PHYSICALHEIGHT               0x1112
#define ICAP_SHADOW                       0x1113
#define ICAP_FRAMES                       0x1114
#define ICAP_XNATIVERESOLUTION            0x1116
#define ICAP_YNATIVERESOLUTION            0x1117
#define ICAP_XRESOLUTION                  0x1118
#define ICAP_YRESOLUTION                  0x1119
#define ICAP_MAXFRAMES                    0x111a
#define ICAP_TILES                        0x111b
#define ICAP_BITORDER                     0x111c
#define ICAP_CCITTKFACTOR                 0x111d
#define ICAP_LIGHTPATH                    0x111e
#define ICAP_PIXELFLAVOR                  0x111f
#define ICAP_PLANARCHUNKY                 0x1120
#define ICAP_ROTATION                     0x1121
#define ICAP_SUPPORTEDSIZES               0x1122
#define ICAP_THRESHOLD                    0x1123
#define ICAP_XSCALING                     0x1124
#define ICAP_YSCALING                     0x1125
#define ICAP_BITORDERCODES                0x1126
#define ICAP_PIXELFLAVORCODES             0x1127
#define ICAP_JPEGPIXELTYPE                0x1128
#define ICAP_TIMEFILL                     0x112a
#define ICAP_BITDEPTH                     0x112b
#define ICAP_BITDEPTHREDUCTION            0x112c  /* Added 1.5 */
#define ICAP_UNDEFINEDIMAGESIZE           0x112d  /* Added 1.6 */
#define ICAP_IMAGEDATASET                 0x112e  /* Added 1.7 */
#define ICAP_EXTIMAGEINFO                 0x112f  /* Added 1.7 */
#define ICAP_MINIMUMHEIGHT                0x1130  /* Added 1.7 */
#define ICAP_MINIMUMWIDTH                 0x1131  /* Added 1.7 */
#define ICAP_AUTODISCARDBLANKPAGES        0x1134  /* Added 2.0 */
#define ICAP_FLIPROTATION                 0x1136  /* Added 1.8 */
#define ICAP_BARCODEDETECTIONENABLED      0x1137  /* Added 1.8 */
#define ICAP_SUPPORTEDBARCODETYPES        0x1138  /* Added 1.8 */
#define ICAP_BARCODEMAXSEARCHPRIORITIES   0x1139  /* Added 1.8 */
#define ICAP_BARCODESEARCHPRIORITIES      0x113a  /* Added 1.8 */
#define ICAP_BARCODESEARCHMODE            0x113b  /* Added 1.8 */
#define ICAP_BARCODEMAXRETRIES            0x113c  /* Added 1.8 */
#define ICAP_BARCODETIMEOUT               0x113d  /* Added 1.8 */
#define ICAP_ZOOMFACTOR                   0x113e  /* Added 1.8 */
#define ICAP_PATCHCODEDETECTIONENABLED    0x113f  /* Added 1.8 */
#define ICAP_SUPPORTEDPATCHCODETYPES      0x1140  /* Added 1.8 */
#define ICAP_PATCHCODEMAXSEARCHPRIORITIES 0x1141  /* Added 1.8 */
#define ICAP_PATCHCODESEARCHPRIORITIES    0x1142  /* Added 1.8 */
#define ICAP_PATCHCODESEARCHMODE          0x1143  /* Added 1.8 */
#define ICAP_PATCHCODEMAXRETRIES          0x1144  /* Added 1.8 */
#define ICAP_PATCHCODETIMEOUT             0x1145  /* Added 1.8 */
#define ICAP_FLASHUSED2                   0x1146  /* Added 1.8 */
#define ICAP_IMAGEFILTER                  0x1147  /* Added 1.8 */
#define ICAP_NOISEFILTER                  0x1148  /* Added 1.8 */
#define ICAP_OVERSCAN                     0x1149  /* Added 1.8 */
#define ICAP_AUTOMATICBORDERDETECTION     0x1150  /* Added 1.8 */
#define ICAP_AUTOMATICDESKEW              0x1151  /* Added 1.8 */
#define ICAP_AUTOMATICROTATE              0x1152  /* Added 1.8 */
#define ICAP_JPEGQUALITY                  0x1153  /* Added 1.9 */
#define ICAP_FEEDERTYPE                   0x1154  /* Added 1.91 */
#define ICAP_ICCPROFILE                   0x1155  /* Added 1.91 */
#define ICAP_AUTOSIZE                     0x1156  /* Added 2.0 */
#define ICAP_AUTOMATICCROPUSESFRAME       0x1157  /* Added 2.1 */
#define ICAP_AUTOMATICLENGTHDETECTION     0x1158  /* Added 2.1 */
#define ICAP_AUTOMATICCOLORENABLED        0x1159  /* Added 2.1 */
#define ICAP_AUTOMATICCOLORNONCOLORPIXELTYPE 0x115a  /* Added 2.1 */
#define ICAP_COLORMANAGEMENTENABLED       0x115b  /* Added 2.1 */
#define ICAP_IMAGEMERGE                   0x115c  /* Added 2.1 */
#define ICAP_IMAGEMERGEHEIGHTTHRESHOLD    0x115d  /* Added 2.1 */
#define ICAP_SUPPORTEDEXTIMAGEINFO        0x115e  /* Added 2.1 */

/* image data sources MAY support these audio caps */
#define ACAP_XFERMECH                     0x1202  /* Added 1.8 */


/***************************************************************************
 *            Extended Image Info Attributes section  Added 1.7            *
 ***************************************************************************/

#define TWEI_BARCODEX               0x1200
#define TWEI_BARCODEY               0x1201
#define TWEI_BARCODETEXT            0x1202
#define TWEI_BARCODETYPE            0x1203
#define TWEI_DESHADETOP             0x1204
#define TWEI_DESHADELEFT            0x1205
#define TWEI_DESHADEHEIGHT          0x1206
#define TWEI_DESHADEWIDTH           0x1207
#define TWEI_DESHADESIZE            0x1208
#define TWEI_SPECKLESREMOVED        0x1209
#define TWEI_HORZLINEXCOORD         0x120A
#define TWEI_HORZLINEYCOORD         0x120B
#define TWEI_HORZLINELENGTH         0x120C
#define TWEI_HORZLINETHICKNESS      0x120D
#define TWEI_VERTLINEXCOORD         0x120E
#define TWEI_VERTLINEYCOORD         0x120F
#define TWEI_VERTLINELENGTH         0x1210
#define TWEI_VERTLINETHICKNESS      0x1211
#define TWEI_PATCHCODE              0x1212
#define TWEI_ENDORSEDTEXT           0x1213
#define TWEI_FORMCONFIDENCE         0x1214
#define TWEI_FORMTEMPLATEMATCH      0x1215
#define TWEI_FORMTEMPLATEPAGEMATCH  0x1216
#define TWEI_FORMHORZDOCOFFSET      0x1217
#define TWEI_FORMVERTDOCOFFSET      0x1218
#define TWEI_BARCODECOUNT           0x1219
#define TWEI_BARCODECONFIDENCE      0x121A
#define TWEI_BARCODEROTATION        0x121B
#define TWEI_BARCODETEXTLENGTH      0x121C
#define TWEI_DESHADECOUNT           0x121D
#define TWEI_DESHADEBLACKCOUNTOLD   0x121E
#define TWEI_DESHADEBLACKCOUNTNEW   0x121F
#define TWEI_DESHADEBLACKRLMIN      0x1220
#define TWEI_DESHADEBLACKRLMAX      0x1221
#define TWEI_DESHADEWHITECOUNTOLD   0x1222
#define TWEI_DESHADEWHITECOUNTNEW   0x1223
#define TWEI_DESHADEWHITERLMIN      0x1224
#define TWEI_DESHADEWHITERLAVE      0x1225
#define TWEI_DESHADEWHITERLMAX      0x1226
#define TWEI_BLACKSPECKLESREMOVED   0x1227
#define TWEI_WHITESPECKLESREMOVED   0x1228
#define TWEI_HORZLINECOUNT          0x1229
#define TWEI_VERTLINECOUNT          0x122A
#define TWEI_DESKEWSTATUS           0x122B
#define TWEI_SKEWORIGINALANGLE      0x122C
#define TWEI_SKEWFINALANGLE         0x122D
#define TWEI_SKEWCONFIDENCE         0x122E
#define TWEI_SKEWWINDOWX1           0x122F
#define TWEI_SKEWWINDOWY1           0x1230
#define TWEI_SKEWWINDOWX2           0x1231
#define TWEI_SKEWWINDOWY2           0x1232
#define TWEI_SKEWWINDOWX3           0x1233
#define TWEI_SKEWWINDOWY3           0x1234
#define TWEI_SKEWWINDOWX4           0x1235
#define TWEI_SKEWWINDOWY4           0x1236
#define TWEI_BOOKNAME               0x1238  /* added 1.9 */
#define TWEI_CHAPTERNUMBER          0x1239  /* added 1.9 */
#define TWEI_DOCUMENTNUMBER         0x123A  /* added 1.9 */
#define TWEI_PAGENUMBER             0x123B  /* added 1.9 */
#define TWEI_CAMERA                 0x123C  /* added 1.9 */
#define TWEI_FRAMENUMBER            0x123D  /* added 1.9 */
#define TWEI_FRAME                  0x123E  /* added 1.9 */
#define TWEI_PIXELFLAVOR            0x123F  /* added 1.9 */
#define TWEI_ICCPROFILE             0x1240  /* added 1.91 */
#define TWEI_LASTSEGMENT            0x1241  /* added 1.91 */
#define TWEI_SEGMENTNUMBER          0x1242  /* added 1.91 */
#define TWEI_MAGDATA                0x1243  /* added 2.0 */
#define TWEI_MAGTYPE                0x1244  /* added 2.0 */
#define TWEI_PAGESIDE               0x1245  /* added 2.0 */
#define TWEI_FILESYSTEMSOURCE       0x1246  /* added 2.0 */
#define TWEI_IMAGEMERGED            0x1247  /* added 2.1 */
#define TWEI_MAGDATALENGTH          0x1248  /* added 2.1 */

#define TWEJ_NONE                   0x0000
#define TWEJ_MIDSEPARATOR           0x0001
#define TWEJ_PATCH1                 0x0002
#define TWEJ_PATCH2                 0x0003
#define TWEJ_PATCH3                 0x0004
#define TWEJ_PATCH4                 0x0005
#define TWEJ_PATCH6                 0x0006
#define TWEJ_PATCHT                 0x0007


/***************************************************************************
 *            Return Codes and Condition Codes section                     *
 ***************************************************************************/

/* Return Codes: DSM_Entry and DS_Entry may return any one of these values. */
#define TWRC_CUSTOMBASE     0x8000

#define TWRC_SUCCESS          0
#define TWRC_FAILURE          1 /* Application may get TW_STATUS for info on failure */
#define TWRC_CHECKSTATUS      2 /* "tried hard"; get status                  */
#define TWRC_CANCEL           3
#define TWRC_DSEVENT          4
#define TWRC_NOTDSEVENT       5
#define TWRC_XFERDONE         6
#define TWRC_ENDOFLIST        7 /* After MSG_GETNEXT if nothing left         */
#define TWRC_INFONOTSUPPORTED 8
#define TWRC_DATANOTAVAILABLE 9

/* Condition Codes: Application gets these by doing DG_CONTROL DAT_STATUS MSG_GET.  */
#define TWCC_CUSTOMBASE         0x8000

#define TWCC_SUCCESS            0 /* It worked!                                */
#define TWCC_BUMMER             1 /* Failure due to unknown causes             */
#define TWCC_LOWMEMORY          2 /* Not enough memory to perform operation    */
#define TWCC_NODS               3 /* No Data Source                            */
#define TWCC_MAXCONNECTIONS     4 /* DS is connected to max possible applications      */
#define TWCC_OPERATIONERROR     5 /* DS or DSM reported error, application shouldn't   */
#define TWCC_BADCAP             6 /* Unknown capability                        */
#define TWCC_BADPROTOCOL        9 /* Unrecognized MSG DG DAT combination       */
#define TWCC_BADVALUE           10 /* Data parameter out of range              */
#define TWCC_SEQERROR           11 /* DG DAT MSG out of expected sequence      */
#define TWCC_BADDEST            12 /* Unknown destination Application/Source in DSM_Entry */
#define TWCC_CAPUNSUPPORTED     13 /* Capability not supported by source            */
#define TWCC_CAPBADOPERATION    14 /* Operation not supported by capability         */
#define TWCC_CAPSEQERROR        15 /* Capability has dependancy on other capability */
#define TWCC_DENIED             16 /* File System operation is denied (file is protected) Added 1.8 */
#define TWCC_FILEEXISTS         17 /* Operation failed because file already exists.       Added 1.8 */
#define TWCC_FILENOTFOUND       18 /* File not found                                      Added 1.8 */
#define TWCC_NOTEMPTY           19 /* Operation failed because directory is not empty     Added 1.8 */
#define TWCC_PAPERJAM           20 /* The feeder is jammed                                Added 1.8 */
#define TWCC_PAPERDOUBLEFEED    21 /* The feeder detected multiple pages                  Added 1.8 */
#define TWCC_FILEWRITEERROR     22 /* Error writing the file (meant for things like disk full conditions)Added 1.8 */
#define TWCC_CHECKDEVICEONLINE  23 /* The device went offline prior to or during this operation Added 1.8 */
#define TWCC_INTERLOCK          24 /* Added 2.0 */
#define TWCC_DAMAGEDCORNER      25 /* Added 2.0 */
#define TWCC_FOCUSERROR         26 /* Added 2.0 */
#define TWCC_DOCTOOLIGHT        27 /* Added 2.0 */
#define TWCC_DOCTOODARK         28 /* Added 2.0 */
#define TWCC_NOMEDIA            29 /* Added 2.1 */

/* bit patterns: for query the operation that are supported by the data source on a capability */
/* Application gets these through DG_CONTROL/DAT_CAPABILITY/MSG_QUERYSUPPORT */
/* Added 1.6 */
#define TWQC_GET              0x0001
#define TWQC_SET              0x0002
#define TWQC_GETDEFAULT       0x0004
#define TWQC_GETCURRENT       0x0008
#define TWQC_RESET            0x0010


/****************************************************************************
 * Depreciated Items                                                        *
 ****************************************************************************/
#if defined(WIN32) || defined(WIN64)
        #define TW_HUGE
#elif !defined(TWH_CMP_GNU)
        #define TW_HUGE    huge
#else
        #define TW_HUGE
#endif



typedef BYTE TW_HUGE * HPBYTE;
typedef void TW_HUGE * HPVOID;

typedef unsigned char     TW_STR1024[1026],   FAR *pTW_STR1026;
typedef wchar_t           TW_UNI512[512],     FAR *pTW_UNI512;

#define TWTY_STR1024          0x000d    /* Means Item is a TW_STR1024...added 1.9 */
#define TWTY_UNI512           0x000e    /* Means Item is a TW_UNI512...added 1.9 */

#define TWFF_JPN              12        /* 1.91 */

#define DAT_TWUNKIDENTITY     0x000b    /* Additional message required for thunker to request the special identity information. */
#define DAT_SETUPFILEXFER2    0x0301    /* Data transfer via a file. deprecated - use DAT_SETUPFILEXFER instead*/

#define CAP_SUPPORTEDCAPSEXT      0x100c
#define CAP_FILESYSTEM            //0x????
#define CAP_PAGEMULTIPLEACQUIRE   0x1023    /* Added 1.8 */
#define CAP_PAPERBINDING          0x102f    /* Added 1.8 */
#define CAP_PASSTHRU              0x1031    /* Added 1.8 */
#define CAP_POWERDOWNTIME         0x1034    /* Added 1.8 */  //0x1034 is reused by CAP_CAMERASIDE
#define ACAP_AUDIOFILEFORMAT      0x1201    /* Added 1.8 */

#define MSG_CHECKSTATUS       0x0201    /* Get status information - use MSG_GET instead */

#define MSG_INVOKE_CALLBACK   0x0903    /* Mac Only, deprecated - use DAT_NULL and MSG_xxx instead */

#define TWSX_FILE2            3

/* CAP_FILESYSTEM values (FS_ means file system) */
#define TWFS_FILESYSTEM       0
#define TWFS_RECURSIVEDELETE  1

/* ICAP_PIXELTYPE values (PT_ means Pixel Type) */
#define TWPT_SRGB64     11 /* 1.91 */
#define TWPT_BGR        12 /* 1.91 */
#define TWPT_CIELAB     13 /* 1.91 */
#define TWPT_CIELUV     14 /* 1.91 */
#define TWPT_YCBCR      15 /* 1.91 */

/* ICAP_SUPPORTEDSIZES values (SS_ means Supported Sizes) */
#define TWSS_B                8
#define TWSS_A4LETTER    TWSS_A4      /* use TWSS_A4 instead */
#define TWSS_B3          TWSS_ISOB3   /* use TWSS_ISOB3 instead */
#define TWSS_B4          TWSS_ISOB4   /* use TWSS_ISOB4 instead */
#define TWSS_B6          TWSS_ISOB6   /* use TWSS_ISOB6 instead */
#define TWSS_B5LETTER    TWSS_JISB5   /* use TWSS_JISB5 instead */

/* CAP_LANGUAGE Language Constants */
#define TWLG_DAN    TWLG_DANISH           /* use TWLG_DANISH instead */
#define TWLG_DUT    TWLG_DUTCH            /* use TWLG_DUTCH instead */
#define TWLG_ENG    TWLG_ENGLISH          /* use TWLG_ENGLISH instead */
#define TWLG_USA    TWLG_ENGLISH_USA      /* use TWLG_ENGLISH_USA instead */
#define TWLG_FIN    TWLG_FINNISH          /* use TWLG_FINNISH instead */
#define TWLG_FRN    TWLG_FRENCH           /* use TWLG_FRENCH instead */
#define TWLG_FCF    TWLG_FRENCH_CANADIAN  /* use TWLG_FRENCH_CANADIAN instead */
#define TWLG_GER    TWLG_GERMAN           /* use TWLG_GERMAN instead */
#define TWLG_ICE    TWLG_ICELANDIC        /* use TWLG_ICELANDIC instead */
#define TWLG_ITN    TWLG_ITALIAN          /* use TWLG_ITALIAN instead */
#define TWLG_NOR    TWLG_NORWEGIAN        /* use TWLG_NORWEGIAN instead */
#define TWLG_POR    TWLG_PORTUGUESE       /* use TWLG_PORTUGUESE instead */
#define TWLG_SPA    TWLG_SPANISH          /* use TWLG_SPANISH instead */
#define TWLG_SWE    TWLG_SWEDISH          /* use TWLG_SWEDISH instead */


/* ACAP_AUDIOFILEFORMAT values (AF_ means audio format).  Added 1.8 */
#define TWAF_WAV      0
#define TWAF_AIFF     1
#define TWAF_AU       3
#define TWAF_SND      4


/* DAT_SETUPFILEXFER2. Sets up DS to application data transfer via a file. Added 1.9 */
typedef struct {
   TW_MEMREF FileName;     /* Pointer to file name text */
   TW_UINT16 FileNameType; /* TWTY_STR1024 or TWTY_UNI512 */
   TW_UINT16 Format;       /* Any TWFF_ constant */
   TW_INT16  VRefNum;      /* Used for Mac only  */
   TW_UINT32 parID;        /* Used for Mac only */
} TW_SETUPFILEXFER2, FAR * pTW_SETUPFILEXFER2;

/* SDH - 03/21/95 - TWUNK */
/* DAT_TWUNKIDENTITY. Provides DS identity and 'other' information necessary */
/*                    across thunk link. */
typedef struct {
   TW_IDENTITY identity;        /* Identity of data source.                 */
   TW_STR255   dsPath;          /* Full path and file name of data source.  */
} TW_TWUNKIDENTITY, FAR * pTW_TWUNKIDENTITY;

/* SDH - 03/21/95 - TWUNK */
/* Provides DS_Entry parameters over thunk link. */
/*  SDH - 03/23/95 - WATCH                                                  */
/*  The thunker requires knowledge about size of data being passed in the   */
/*  lpData parameter to DS_Entry (which is not readily available due to     */
/*  type LPVOID.  Thus, we key off the DAT_ argument to determine the size. */
/*  This has a couple implications:                                         */
/*  1) Any additional DAT_ features require modifications to the thunk code */
/*     for thunker support.                                                 */
/*  2) Any applications which use the custom capabailites are not supported */
/*     under thunking since we have no way of knowing what size data (if    */
/*     any) is being passed.                                                */
typedef struct
{
    TW_INT8     destFlag;       /* TRUE if dest is not NULL                 */
    TW_IDENTITY dest;           /* Identity of data source (if used)        */
    TW_INT32    dataGroup;      /* DSM_Entry dataGroup parameter            */
    TW_INT16    dataArgType;    /* DSM_Entry dataArgType parameter          */
    TW_INT16    message;        /* DSM_Entry message parameter              */
    TW_INT32    pDataSize;      /* Size of pData (0 if NULL)                */
    //  TW_MEMREF   pData;      /* Based on implementation specifics, a     */
                                /* pData parameter makes no sense in this   */
                                /* structure, but data (if provided) will be*/
                                /* appended in the data block.              */
} TW_TWUNKDSENTRYPARAMS, FAR * pTW_TWUNKDSENTRYPARAMS;

/* SDH - 03/21/95 - TWUNK */
/* Provides DS_Entry results over thunk link. */
typedef struct
{
    TW_UINT16   returnCode;     /* Thunker DsEntry return code.             */
    TW_UINT16   conditionCode;  /* Thunker DsEntry condition code.          */
    TW_INT32    pDataSize;      /* Size of pData (0 if NULL)                */
    //  TW_MEMREF   pData;      /* Based on implementation specifics, a     */
                                /* pData parameter makes no sense in this   */
                                /* structure, but data (if provided) will be*/
                                /* appended in the data block.              */
} TW_TWUNKDSENTRYRETURN, FAR * pTW_TWUNKDSENTRYRETURN;

/* WJD - 950818 */
/* Added for 1.6 Specification */
/* TWAIN 1.6 CAP_SUPPORTEDCAPSEXT structure */
typedef struct
{
    TW_UINT16 Cap;   /* Which CAP/ICAP info is relevant to */
    TW_UINT16 Properties;  /* Messages this CAP/ICAP supports */
} TW_CAPEXT, FAR * pTW_CAPEXT;

/* DAT_SETUPAUDIOFILEXFER, information required to setup an audio file transfer */
typedef struct {
   TW_STR255  FileName; /* full path target file */
   TW_UINT16  Format;   /* one of TWAF_xxxx */
   TW_INT16 VRefNum;
} TW_SETUPAUDIOFILEXFER, FAR * pTW_SETUPAUDIOFILEXFER;


/****************************************************************************
 * Entry Points                                                             *
 ****************************************************************************/

/**********************************************************************
 * Function: DSM_Entry, the only entry point into the Data Source Manager.
 *
 * Parameters:
 *  pOrigin Identifies the source module of the message. This could
 *          identify an Application, a Source, or the Source Manager.
 *
 *  pDest   Identifies the destination module for the message.
 *          This could identify an application or a data source.
 *          If this is NULL, the message goes to the Source Manager.
 *
 *  DG      The Data Group.
 *          Example: DG_IMAGE.
 *
 *  DAT     The Data Attribute Type.
 *          Example: DAT_IMAGEMEMXFER.
 *
 *  MSG     The message.  Messages are interpreted by the destination module
 *          with respect to the Data Group and the Data Attribute Type.
 *          Example: MSG_GET.
 *
 *  pData   A pointer to the data structure or variable identified
 *          by the Data Attribute Type.
 *          Example: (TW_MEMREF)&ImageMemXfer
 *                   where ImageMemXfer is a TW_IMAGEMEMXFER structure.
 *
 * Returns:
 *  ReturnCode
 *         Example: TWRC_SUCCESS.
 *
 ********************************************************************/

/* Don't mangle the name "DSM_Entry" if we're compiling in C++! */
#ifdef  __cplusplus
extern "C" {
#endif  /* __cplusplus */

#ifdef TWH_CMP_MSC

  TW_UINT16 FAR PASCAL DSM_Entry( pTW_IDENTITY pOrigin,
                                  pTW_IDENTITY pDest,
                                  TW_UINT32    DG,
                                  TW_UINT16    DAT,
                                  TW_UINT16    MSG,
                                  TW_MEMREF    pData);

  typedef TW_UINT16 (FAR PASCAL *DSMENTRYPROC)(pTW_IDENTITY pOrigin,
                                               pTW_IDENTITY pDest,
                                               TW_UINT32 DG,
                                               TW_UINT16 DAT,
                                               TW_UINT16 MSG,
                                               TW_MEMREF pData);

#else

  FAR PASCAL TW_UINT16 DSM_Entry( pTW_IDENTITY pOrigin,
                                  pTW_IDENTITY pDest,
                                  TW_UINT32    DG,
                                  TW_UINT16    DAT,
                                  TW_UINT16    MSG,
                                  TW_MEMREF    pData);

  typedef TW_UINT16 (*DSMENTRYPROC)(pTW_IDENTITY pOrigin,
                                    pTW_IDENTITY pDest,
                                    TW_UINT32 DG,
                                    TW_UINT16 DAT,
                                    TW_UINT16 MSG,
                                    TW_MEMREF pData);

#endif  /* TWH_CMP_MSC */

#ifdef  __cplusplus
}
#endif  /* cplusplus */


/**********************************************************************
 * Function: DS_Entry, the entry point provided by a Data Source.
 *
 * Parameters:
 *  pOrigin Identifies the source module of the message. This could
 *          identify an application or the Data Source Manager.
 *
 *  DG      The Data Group.
 *          Example: DG_IMAGE.
 *
 *  DAT     The Data Attribute Type.
 *          Example: DAT_IMAGEMEMXFER.
 *
 *  MSG     The message.  Messages are interpreted by the data source
 *          with respect to the Data Group and the Data Attribute Type.
 *          Example: MSG_GET.
 *
 *  pData   A pointer to the data structure or variable identified
 *          by the Data Attribute Type.
 *          Example: (TW_MEMREF)&ImageMemXfer
 *                   where ImageMemXfer is a TW_IMAGEMEMXFER structure.
 *
 * Returns:
 *  ReturnCode
 *          Example: TWRC_SUCCESS.
 *
 * Note:
 *  The DSPROC type is only used by an application when it calls
 *  a Data Source directly, bypassing the Data Source Manager.
 *
 ********************************************************************/
/* Don't mangle the name "DS_Entry" if we're compiling in C++! */
#ifdef  __cplusplus
extern "C" {
#endif  /* __cplusplus */

#ifdef TWH_CMP_MSC

  TW_UINT16 FAR PASCAL DS_Entry(pTW_IDENTITY pOrigin,
                                TW_UINT32 DG,
                                TW_UINT16 DAT,
                                TW_UINT16 MSG,
                                TW_MEMREF pData);

  typedef TW_UINT16 (FAR PASCAL *DSENTRYPROC)(pTW_IDENTITY pOrigin,
                                              TW_UINT32 DG,
                                              TW_UINT16 DAT,
                                              TW_UINT16 MSG,
                                              TW_MEMREF pData);

#else

  FAR PASCAL TW_UINT16 DS_Entry(pTW_IDENTITY pOrigin,
                                TW_UINT32 DG,
                                TW_UINT16 DAT,
                                TW_UINT16 MSG,
                                TW_MEMREF pData);

  typedef TW_UINT16 (*DSENTRYPROC)(pTW_IDENTITY pOrigin,
                                   TW_UINT32 DG,
                                   TW_UINT16 DAT,
                                   TW_UINT16 MSG,
                                   TW_MEMREF pData);

#endif /* TWH_CMP_MSC */


  typedef TW_HANDLE (PASCAL *DSM_MEMALLOCATE)(TW_UINT32 _size);
  typedef void (PASCAL *DSM_MEMFREE)(TW_HANDLE _handle);
  typedef TW_MEMREF (PASCAL *DSM_MEMLOCK)(TW_HANDLE _handle);
  typedef void (PASCAL *DSM_MEMUNLOCK)(TW_HANDLE _handle);

#ifdef  __cplusplus
}
#endif  /* __cplusplus */

/* DAT_ENTRYPOINT. returns essential entry points. */
typedef struct {
   TW_UINT32         Size;
   DSMENTRYPROC      DSM_Entry;
   DSM_MEMALLOCATE   DSM_MemAllocate;
   DSM_MEMFREE       DSM_MemFree;
   DSM_MEMLOCK       DSM_MemLock;
   DSM_MEMUNLOCK     DSM_MemUnlock;
} TW_ENTRYPOINT, FAR * pTW_ENTRYPOINT;

/* Restore the previous packing alignment: this occurs after all structures are defined */
#if defined(TWH_CMP_MING32)
    #pragma pack (pop)
#elif defined(TWH_CMP_MSC)
    #pragma pack (pop, before_twain)
#elif defined(TWH_CMP_GNU)
    #pragma pack (pop, before_twain)
#elif defined(TWH_CMP_BORLAND)
    #pragma option �a.
#elif defined(TWH_CMP_XCODE)
    #if PRAGMA_STRUCT_ALIGN
        #pragma options align=reset
    #elif PRAGMA_STRUCT_PACKPUSH
        #pragma pack (pop)
    #elif PRAGMA_STRUCT_PACK
        #pragma pack()
    #endif
#endif

#endif  /* TWAIN */