xref: /aoo41x/main/twain/inc/twain.h (revision cdf0e10c)
1 /* ======================================================================== *\
2 
3   Copyright (C) 1991, 1992 TWAIN Working Group: Aldus, Caere, Eastman-Kodak,
4   Hewlett-Packard and Logitech Corporations.  All rights reserved.
5 
6   Copyright (C) 1997 TWAIN Working Group: Bell+Howell, Canon, DocuMagix,
7   Fujitsu, Genoa Technology, Hewlett-Packard, Kofax Imaging Products, and
8   Ricoh Corporation.  All rights reserved.
9 
10   Copyright � 1998 TWAIN Working Group: Adobe Systems Incorporated,
11   Canon Information Systems, Eastman Kodak Company,
12   Fujitsu Computer Products of America, Genoa Technology,
13   Hewlett-Packard Company, Intel Corporation, Kofax Image Products,
14   JFL Peripheral Solutions Inc., Ricoh Corporation, and Xerox Corporation.
15   All rights reserved.
16 
17   Copyright � 2000 TWAIN Working Group: Adobe Systems Incorporated,
18   Canon Information Systems, Digimarc Corporation, Eastman Kodak Company,
19   Fujitsu Computer Products of America, Hewlett-Packard Company,
20   JFL Peripheral Solutions Inc., Ricoh Corporation, and Xerox Corporation.
21   All rights reserved.
22 
23 
24   TWAIN.h -  This is the definitive include file for applications and
25           data sources written to the TWAIN specification.
26           It defines constants, data structures, messages etc.
27           for the public interface to TWAIN.
28 
29   Revision History:
30     version 1.0, March 6, 1992.  TWAIN 1.0.
31     version 1.1, January 1993.   Tech Notes 1.1
32     version 1.5, June 1993.      Specification Update 1.5
33                                  Change DC to TW
34                                  Change filename from DC.H to TWAIN.H
35     version 1.5, July 1993.      Remove spaces from country identifiers
36 
37     version 1.7, July 1997       Added Capabilities and data structure for
38                                  document imaging and digital cameras.
39                                  KHL.
40     version 1.7, July 1997       Inserted Borland compatibile structure packing
41                                  directives provided by Mentor.  JMH
42     version 1.7, Aug 1997        Expanded file tabs to spaces.
43                                  NOTE: future authors should be sure to have
44                                  their editors set to automatically expand tabs
45                                  to spaces (original tab setting was 4 spaces).
46     version 1.7, Sept 1997       Added job control values
47                                  Added return codes
48     version 1.7, Sept 1997       changed definition of pRGBRESPONSE to
49                                  pTW_RGBRESPONSE
50     version 1.7  Aug 1998        Added missing TWEI_BARCODEROTATION values
51                                  TWBCOR_ types JMH
52     version 1.8  August 1998     Added new types and definitions required
53                                  for 1.8 Specification JMH
54     version 1.8  January 1999    Changed search mode from SRCH_ to TWBD_ as
55                                  in 1.8 Specification, added TWBT_MAXICODE	JMH
56 	  version 1.8  January 1999    Removed undocumented duplicate AUTO<cap> JMH
57     version 1.8  March 1999      Removed undocumented 1.8 caps:
58                                  CAP_FILESYSTEM
59                                  CAP_PAPERBINDING
60                                  CAP_PASSTHRU
61                                  CAP_POWERDOWNTIME
62                                  ICAP_AUTODISCARDBLANKPAGES
63                                * CAP_PAGEMULTIPLEACQUIRE - is CAP_REACQUIREALLOWED,
64 							                   requires spec change.  JMH
65                                  Added Mac structure packing modifications JMH
66 	  version 1.9  March 2000	     Added new types and definations required
67 	                               for 1.9 Specification MLM
68 	  version 1.9  March 2000	     Added ICAP_JPEGQUALITY, TWJQ_ values,
69                                  updated TWON_PROTOCOLMINOR for Release v1.9 MN
70 \* ======================================================================== */
71 
72 #ifndef TWAIN
73 #define TWAIN
74 
75 /*  SDH - 02/08/95 - TWUNK */
76 /*  Force 32-bit twain to use same packing of twain structures as existing */
77 /*  16-bit twain.  This allows 16/32-bit thunking.                         */
78 #ifdef  WIN32
79     #ifdef __MINGW32__
80         #pragma pack (push, 2)
81     #elif __BORLANDC__ //(Mentor June 13, 1996) if using a Borland compiler
82         #pragma option -a2  //(Mentor June 13, 1996) switch to word alignment
83     #else   //(Mentor June 13, 1996) if we're using some other compiler
84         #pragma pack (push, before_twain)
85         #pragma pack (2)
86     #endif  //(Mentor June 13, 1996)
87 #else   /* WIN32 */
88 #endif  /* WIN32 */
89 
90 /****************************************************************************
91  * TWAIN Version                                                            *
92  ****************************************************************************/
93 #define TWON_PROTOCOLMINOR   9        /* Changed for Version 1.9            */
94 #define TWON_PROTOCOLMAJOR   1
95 
96 /****************************************************************************
97  * Platform Dependent Definitions and Typedefs                              *
98  ****************************************************************************/
99 
100 /* Define one of the following, depending on the platform */
101 /* #define _MAC_   */
102 /* #define _UNIX_  */
103 #define _MSWIN_
104 
105 #ifdef  _MSWIN_
106     typedef HANDLE         TW_HANDLE;
107     typedef LPVOID         TW_MEMREF;
108 
109     /*  SDH - 05/05/95 - TWUNK */
110     /*  For common code between 16 and 32 bits.  */
111     #ifdef  WIN32
112         #define TW_HUGE
113     #else   /* WIN32 */
114         #define TW_HUGE    huge
115     #endif  /* WIN32 */
116     typedef BYTE TW_HUGE * HPBYTE;
117     typedef void TW_HUGE * HPVOID;
118 #endif  /* _MSWIN_ */
119 
120 #ifdef  _MAC_
121     /*
122     * NOTE:
123     * Corrected to allow building of TWAIN MacOS PowerPC Applications
124     * and MacOS PowerPC TWAIN sources.
125     *
126     * The modification allows a PowerPC Application to use a
127     * TWAIN 68k Source and a PowerPC Source to be used by a 68k Application.
128     *
129     * The modification concerns the data alignment of the C-Structures used by
130     * TWAIN during the communication between the Application and Source.
131     *
132     * The Data Alignment must be  68k code and not PowerPC.
133     * - Paul Plaquette, LOGi 27, FRANCE-Montpellier
134     */
135     #if PRAGMA_STRUCT_ALIGN
136          #pragma options align=mac68k
137     #elif PRAGMA_STRUCT_PACKPUSH
138          #pragma pack(push, 2)
139     #elif PRAGMA_STRUCT_PACK
140          #pragma pack(2)
141     #endif
142 
143     #define PASCAL         pascal
144     #define FAR
145     typedef Handle         TW_HANDLE;
146     typedef char          *TW_MEMREF;
147 #endif  /* _MAC_ */
148 
149 #ifdef  _UNIX_
150     #define PASCAL         pascal
151     typedef unsigned char *TW_HANDLE;
152     typedef unsigned char *TW_MEMREF;
153 #endif  /* _UNIX_ */
154 
155 /****************************************************************************
156  * Type Definitions                                                         *
157  ****************************************************************************/
158 
159 /* String types. These include room for the strings and a NULL char,     *
160  * or, on the Mac, a length byte followed by the string.                 *
161  * TW_STR255 must hold less than 256 chars so length fits in first byte. */
162 typedef char    TW_STR32[34],     FAR *pTW_STR32;
163 typedef char    TW_STR64[66],     FAR *pTW_STR64;
164 typedef char    TW_STR128[130],   FAR *pTW_STR128;
165 typedef char    TW_STR255[256],   FAR *pTW_STR255;
166 typedef char    TW_STR1024[1026], FAR *pTW_STR1024;   /* added 1.9 */
167 typedef wchar_t TW_UNI512[512],   FAR *pTW_UNI512;    /* added 1.9 */
168 
169 /* Numeric types. */
170 typedef char           TW_INT8,   FAR *pTW_INT8;
171 typedef short          TW_INT16,  FAR *pTW_INT16;
172 typedef long           TW_INT32,  FAR *pTW_INT32;
173 typedef unsigned char  TW_UINT8,  FAR *pTW_UINT8;
174 typedef unsigned short TW_UINT16, FAR *pTW_UINT16;
175 typedef unsigned long  TW_UINT32, FAR *pTW_UINT32;
176 typedef unsigned short TW_BOOL,   FAR *pTW_BOOL;
177 
178 /* Fixed point structure type. */
179 typedef struct {
180     TW_INT16     Whole;        /* maintains the sign */
181     TW_UINT16    Frac;
182 } TW_FIX32,  FAR *pTW_FIX32;
183 
184 /****************************************************************************
185  * Structure Definitions                                                    *
186  ****************************************************************************/
187 
188 /* No DAT needed. */
189 typedef struct {
190    TW_FIX32   X;
191    TW_FIX32   Y;
192    TW_FIX32   Z;
193 } TW_CIEPOINT, FAR * pTW_CIEPOINT;
194 
195 /* No DAT needed. */
196 typedef struct {
197    TW_FIX32   StartIn;
198    TW_FIX32   BreakIn;
199    TW_FIX32   EndIn;
200    TW_FIX32   StartOut;
201    TW_FIX32   BreakOut;
202    TW_FIX32   EndOut;
203    TW_FIX32   Gamma;
204    TW_FIX32   SampleCount;  /* if =0 use the gamma */
205 } TW_DECODEFUNCTION, FAR * pTW_DECODEFUNCTION;
206 
207 /* No DAT needed. */
208 typedef struct {
209    TW_UINT8    Index;    /* Value used to index into the color table. */
210    TW_UINT8    Channel1; /* First  tri-stimulus value (e.g Red)       */
211    TW_UINT8    Channel2; /* Second tri-stimulus value (e.g Green)     */
212    TW_UINT8    Channel3; /* Third  tri-stimulus value (e.g Blue)      */
213 } TW_ELEMENT8, FAR * pTW_ELEMENT8;
214 
215 /* No DAT.  Defines a frame rectangle in ICAP_UNITS coordinates. */
216 typedef struct {
217    TW_FIX32   Left;
218    TW_FIX32   Top;
219    TW_FIX32   Right;
220    TW_FIX32   Bottom;
221 } TW_FRAME, FAR * pTW_FRAME;
222 
223 /* No DAT needed.  Used to manage memory buffers. */
224 typedef struct {
225    TW_UINT32  Flags;  /* Any combination of the TWMF_ constants.           */
226    TW_UINT32  Length; /* Number of bytes stored in buffer TheMem.          */
227    TW_MEMREF  TheMem; /* Pointer or handle to the allocated memory buffer. */
228 } TW_MEMORY, FAR * pTW_MEMORY;
229 
230 /* No DAT needed. */
231 typedef struct {
232    TW_DECODEFUNCTION   Decode[3];
233    TW_FIX32            Mix[3][3];
234 } TW_TRANSFORMSTAGE, FAR * pTW_TRANSFORMSTAGE;
235 
236 /* No DAT needed.  Describes version of software currently running. */
237 typedef struct {
238    TW_UINT16  MajorNum;  /* Major revision number of the software. */
239    TW_UINT16  MinorNum;  /* Incremental revision number of the software. */
240    TW_UINT16  Language;  /* e.g. TWLG_SWISSFRENCH */
241    TW_UINT16  Country;   /* e.g. TWCY_SWITZERLAND */
242    TW_STR32   Info;      /* e.g. "1.0b3 Beta release" */
243 } TW_VERSION, FAR * pTW_VERSION;
244 
245 /* TWON_ARRAY. Container for array of values (a simplified TW_ENUMERATION) */
246 typedef struct {
247    TW_UINT16  ItemType;
248    TW_UINT32  NumItems;    /* How many items in ItemList           */
249    TW_UINT8   ItemList[1]; /* Array of ItemType values starts here */
250 } TW_ARRAY, FAR * pTW_ARRAY;
251 
252 /* TWON_ENUMERATION. Container for a collection of values. */
253 typedef struct {
254    TW_UINT16  ItemType;
255    TW_UINT32  NumItems;     /* How many items in ItemList                 */
256    TW_UINT32  CurrentIndex; /* Current value is in ItemList[CurrentIndex] */
257    TW_UINT32  DefaultIndex; /* Powerup value is in ItemList[DefaultIndex] */
258    TW_UINT8   ItemList[1];  /* Array of ItemType values starts here       */
259 } TW_ENUMERATION, FAR * pTW_ENUMERATION;
260 
261 /* TWON_ONEVALUE. Container for one value. */
262 typedef struct {
263    TW_UINT16  ItemType;
264    TW_UINT32  Item;
265 } TW_ONEVALUE, FAR * pTW_ONEVALUE;
266 
267 /* TWON_RANGE. Container for a range of values. */
268 typedef struct {
269    TW_UINT16  ItemType;
270    TW_UINT32  MinValue;     /* Starting value in the range.           */
271    TW_UINT32  MaxValue;     /* Final value in the range.              */
272    TW_UINT32  StepSize;     /* Increment from MinValue to MaxValue.   */
273    TW_UINT32  DefaultValue; /* Power-up value.                        */
274    TW_UINT32  CurrentValue; /* The value that is currently in effect. */
275 } TW_RANGE, FAR * pTW_RANGE;
276 
277 /* DAT_CAPABILITY. Used by application to get/set capability from/in a data source. */
278 typedef struct {
279    TW_UINT16  Cap; /* id of capability to set or get, e.g. CAP_BRIGHTNESS */
280    TW_UINT16  ConType; /* TWON_ONEVALUE, _RANGE, _ENUMERATION or _ARRAY   */
281    TW_HANDLE  hContainer; /* Handle to container of type Dat              */
282 } TW_CAPABILITY, FAR * pTW_CAPABILITY;
283 
284 /* DAT_CIECOLOR. */
285 typedef struct {
286    TW_UINT16           ColorSpace;
287    TW_INT16            LowEndian;
288    TW_INT16            DeviceDependent;
289    TW_INT32            VersionNumber;
290    TW_TRANSFORMSTAGE   StageABC;
291    TW_TRANSFORMSTAGE   StageLMN;
292    TW_CIEPOINT         WhitePoint;
293    TW_CIEPOINT         BlackPoint;
294    TW_CIEPOINT         WhitePaper;
295    TW_CIEPOINT         BlackInk;
296    TW_FIX32            Samples[1];
297 } TW_CIECOLOR, FAR * pTW_CIECOLOR;
298 
299 /* DAT_EVENT. For passing events down from the application to the DS. */
300 typedef struct {
301    TW_MEMREF  pEvent;    /* Windows pMSG or Mac pEvent.                 */
302    TW_UINT16  TWMessage; /* TW msg from data source, e.g. MSG_XFERREADY */
303 } TW_EVENT, FAR * pTW_EVENT;
304 
305 /* DAT_GRAYRESPONSE */
306 typedef struct {
307    TW_ELEMENT8         Response[1];
308 } TW_GRAYRESPONSE, FAR * pTW_GRAYRESPONSE;
309 
310 /* DAT_IDENTITY. Identifies the program/library/code resource. */
311 typedef struct {
312    TW_UINT32  Id;              /* Unique number.  In Windows, application hWnd      */
313    TW_VERSION Version;         /* Identifies the piece of code              */
314    TW_UINT16  ProtocolMajor;   /* Application and DS must set to TWON_PROTOCOLMAJOR */
315    TW_UINT16  ProtocolMinor;   /* Application and DS must set to TWON_PROTOCOLMINOR */
316    TW_UINT32  SupportedGroups; /* Bit field OR combination of DG_ constants */
317    TW_STR32   Manufacturer;    /* Manufacturer name, e.g. "Hewlett-Packard" */
318    TW_STR32   ProductFamily;   /* Product family name, e.g. "ScanJet"       */
319    TW_STR32   ProductName;     /* Product name, e.g. "ScanJet Plus"         */
320 } TW_IDENTITY, FAR * pTW_IDENTITY;
321 
322 /* DAT_IMAGEINFO. Application gets detailed image info from DS with this. */
323 typedef struct {
324    TW_FIX32   XResolution;      /* Resolution in the horizontal             */
325    TW_FIX32   YResolution;      /* Resolution in the vertical               */
326    TW_INT32   ImageWidth;       /* Columns in the image, -1 if unknown by DS*/
327    TW_INT32   ImageLength;      /* Rows in the image, -1 if unknown by DS   */
328    TW_INT16   SamplesPerPixel;  /* Number of samples per pixel, 3 for RGB   */
329    TW_INT16   BitsPerSample[8]; /* Number of bits for each sample           */
330    TW_INT16   BitsPerPixel;     /* Number of bits for each padded pixel     */
331    TW_BOOL    Planar;           /* True if Planar, False if chunky          */
332    TW_INT16   PixelType;        /* How to interp data; photo interp (TWPT_) */
333    TW_UINT16  Compression;      /* How the data is compressed (TWCP_xxxx)   */
334 } TW_IMAGEINFO, FAR * pTW_IMAGEINFO;
335 
336 /* DAT_IMAGELAYOUT. Provides image layout information in current units. */
337 typedef struct {
338    TW_FRAME   Frame;          /* Frame coords within larger document */
339    TW_UINT32  DocumentNumber;
340    TW_UINT32  PageNumber;     /* Reset when you go to next document  */
341    TW_UINT32  FrameNumber;    /* Reset when you go to next page      */
342 } TW_IMAGELAYOUT, FAR * pTW_IMAGELAYOUT;
343 
344 /* DAT_IMAGEMEMXFER. Used to pass image data (e.g. in strips) from DS to application.*/
345 typedef struct {
346    TW_UINT16  Compression;  /* How the data is compressed                */
347    TW_UINT32  BytesPerRow;  /* Number of bytes in a row of data          */
348    TW_UINT32  Columns;      /* How many columns                          */
349    TW_UINT32  Rows;         /* How many rows                             */
350    TW_UINT32  XOffset;      /* How far from the side of the image        */
351    TW_UINT32  YOffset;      /* How far from the top of the image         */
352    TW_UINT32  BytesWritten; /* How many bytes written in Memory          */
353    TW_MEMORY  Memory;       /* Mem struct used to pass actual image data */
354 } TW_IMAGEMEMXFER, FAR * pTW_IMAGEMEMXFER;
355 
356 /* Changed in 1.1: QuantTable, HuffmanDC, HuffmanAC TW_MEMREF -> TW_MEMORY  */
357 /* DAT_JPEGCOMPRESSION. Based on JPEG Draft International Std, ver 10918-1. */
358 typedef struct {
359    TW_UINT16   ColorSpace;       /* One of the TWPT_xxxx values                */
360    TW_UINT32   SubSampling;      /* Two word "array" for subsampling values    */
361    TW_UINT16   NumComponents;    /* Number of color components in image        */
362    TW_UINT16   RestartFrequency; /* Frequency of restart marker codes in MDU's */
363    TW_UINT16   QuantMap[4];      /* Mapping of components to QuantTables       */
364    TW_MEMORY   QuantTable[4];    /* Quantization tables                        */
365    TW_UINT16   HuffmanMap[4];    /* Mapping of components to Huffman tables    */
366    TW_MEMORY   HuffmanDC[2];     /* DC Huffman tables                          */
367    TW_MEMORY   HuffmanAC[2];     /* AC Huffman tables                          */
368 } TW_JPEGCOMPRESSION, FAR * pTW_JPEGCOMPRESSION;
369 
370 /* DAT_PALETTE8. Color palette when TWPT_PALETTE pixels xfer'd in mem buf. */
371 typedef struct {
372    TW_UINT16    NumColors;   /* Number of colors in the color table.  */
373    TW_UINT16    PaletteType; /* TWPA_xxxx, specifies type of palette. */
374    TW_ELEMENT8  Colors[256]; /* Array of palette values starts here.  */
375 } TW_PALETTE8, FAR * pTW_PALETTE8;
376 
377 /* DAT_PENDINGXFERS. Used with MSG_ENDXFER to indicate additional data. */
378 typedef struct {
379    TW_UINT16 Count;
380    union {
381       TW_UINT32 EOJ;
382       TW_UINT32 Reserved;
383    };
384 } TW_PENDINGXFERS, FAR *pTW_PENDINGXFERS;
385 
386 /* DAT_RGBRESPONSE */
387 typedef struct {
388    TW_ELEMENT8         Response[1];
389 } TW_RGBRESPONSE, FAR * pTW_RGBRESPONSE;
390 
391 /* DAT_SETUPFILEXFER. Sets up DS to application data transfer via a file. */
392 typedef struct {
393    TW_STR255 FileName;
394    TW_UINT16 Format;   /* Any TWFF_ constant */
395    TW_INT16  VRefNum;  /* Used for Mac only  */
396 } TW_SETUPFILEXFER, FAR * pTW_SETUPFILEXFER;
397 
398 /* DAT_SETUPFILEXFER2. Sets up DS to application data transfer via a file. */
399 /* Added 1.9                                                               */
400 typedef struct {
401    TW_MEMREF FileName;     /* Pointer to file name text */
402    TW_UINT16 FileNameType; /* TWTY_STR1024 or TWTY_UNI512 */
403    TW_UINT16 Format;       /* Any TWFF_ constant */
404    TW_INT16  VRefNum;      /* Used for Mac only  */
405    TW_UINT32 parID;        /* Used for Mac only */
406 } TW_SETUPFILEXFER2, FAR * pTW_SETUPFILEXFER2;
407 
408 /* DAT_SETUPMEMXFER. Sets up DS to application data transfer via a memory buffer. */
409 typedef struct {
410    TW_UINT32 MinBufSize;
411    TW_UINT32 MaxBufSize;
412    TW_UINT32 Preferred;
413 } TW_SETUPMEMXFER, FAR * pTW_SETUPMEMXFER;
414 
415 /* DAT_STATUS. Application gets detailed status info from a data source with this. */
416 typedef struct {
417    TW_UINT16  ConditionCode; /* Any TWCC_ constant     */
418    TW_UINT16  Reserved;      /* Future expansion space */
419 } TW_STATUS, FAR * pTW_STATUS;
420 
421 /* DAT_USERINTERFACE. Coordinates UI between application and data source. */
422 typedef struct {
423    TW_BOOL    ShowUI;  /* TRUE if DS should bring up its UI           */
424    TW_BOOL    ModalUI; /* For Mac only - true if the DS's UI is modal */
425    TW_HANDLE  hParent; /* For windows only - Application window handle        */
426 } TW_USERINTERFACE, FAR * pTW_USERINTERFACE;
427 
428 /* SDH - 03/21/95 - TWUNK */
429 /* DAT_TWUNKIDENTITY. Provides DS identity and 'other' information necessary */
430 /*                    across thunk link. */
431 typedef struct {
432    TW_IDENTITY identity;        /* Identity of data source.                 */
433    TW_STR255   dsPath;          /* Full path and file name of data source.  */
434 } TW_TWUNKIDENTITY, FAR * pTW_TWUNKIDENTITY;
435 
436 /* SDH - 03/21/95 - TWUNK */
437 /* Provides DS_Entry parameters over thunk link. */
438 typedef struct
439 {
440     TW_INT8     destFlag;       /* TRUE if dest is not NULL                 */
441     TW_IDENTITY dest;           /* Identity of data source (if used)        */
442     TW_INT32    dataGroup;      /* DSM_Entry dataGroup parameter            */
443     TW_INT16    dataArgType;    /* DSM_Entry dataArgType parameter          */
444     TW_INT16    message;        /* DSM_Entry message parameter              */
445     TW_INT32    pDataSize;      /* Size of pData (0 if NULL)                */
446     //  TW_MEMREF   pData;      /* Based on implementation specifics, a     */
447                                 /* pData parameter makes no sense in this   */
448                                 /* structure, but data (if provided) will be*/
449                                 /* appended in the data block.              */
450    } TW_TWUNKDSENTRYPARAMS, FAR * pTW_TWUNKDSENTRYPARAMS;
451 
452 /* SDH - 03/21/95 - TWUNK */
453 /* Provides DS_Entry results over thunk link. */
454 typedef struct
455 {
456     TW_UINT16   returnCode;     /* Thunker DsEntry return code.             */
457     TW_UINT16   conditionCode;  /* Thunker DsEntry condition code.          */
458     TW_INT32    pDataSize;      /* Size of pData (0 if NULL)                */
459     //  TW_MEMREF   pData;      /* Based on implementation specifics, a     */
460                                 /* pData parameter makes no sense in this   */
461                                 /* structure, but data (if provided) will be*/
462                                 /* appended in the data block.              */
463 } TW_TWUNKDSENTRYRETURN, FAR * pTW_TWUNKDSENTRYRETURN;
464 
465 /* WJD - 950818 */
466 /* Added for 1.6 Specification */
467 /* TWAIN 1.6 CAP_SUPPORTEDCAPSEXT structure */
468 typedef struct
469 {
470     TW_UINT16 Cap;   /* Which CAP/ICAP info is relevant to */
471     TW_UINT16 Properties;  /* Messages this CAP/ICAP supports */
472 } TW_CAPEXT, FAR * pTW_CAPEXT;
473 
474 /* ----------------------------------------------------------------------- *\
475 
476   Version 1.7:      Added Following data structure for Document Imaging
477   July 1997         Enhancement.
478   KHL               TW_CUSTOMDSDATA --  For Saving and Restoring Source's
479                                         state.
480                     TW_INFO         --  Each attribute for extended image
481                                         information.
482                     TW_EXTIMAGEINFO --  Extended image information structure.
483 
484 \* ----------------------------------------------------------------------- */
485 
486 typedef struct {
487     TW_UINT32  InfoLength;     /* Length of Information in bytes.  */
488     TW_HANDLE  hData;          /* Place holder for data, DS Allocates */
489 }TW_CUSTOMDSDATA, FAR *pTW_CUSTOMDSDATA;
490 
491 typedef struct {
492     TW_UINT16   InfoID;
493     TW_UINT16   ItemType;
494     TW_UINT16   NumItems;
495     TW_UINT16   CondCode;
496     TW_UINT32   Item;
497 }TW_INFO, FAR* pTW_INFO;
498 
499 typedef struct {
500     TW_UINT32   NumInfos;
501     TW_INFO     Info[1];
502 }TW_EXTIMAGEINFO, FAR* pTW_EXTIMAGEINFO;
503 
504 /* Added 1.8 */
505 
506 /* DAT_AUDIOINFO, information about audio data */
507 typedef struct {
508    TW_STR255  Name;       /* name of audio data */
509    TW_UINT32  Reserved;   /* reserved space */
510 } TW_AUDIOINFO, FAR * pTW_AUDIOINFO;
511 
512 /* DAT_DEVICEEVENT, information about events */
513 typedef struct {
514    TW_UINT32  Event;                  /* One of the TWDE_xxxx values. */
515    TW_STR255  DeviceName;             /* The name of the device that generated the event */
516    TW_UINT32  BatteryMinutes;         /* Battery Minutes Remaining    */
517    TW_INT16   BatteryPercentage;      /* Battery Percentage Remaining */
518    TW_INT32   PowerSupply;            /* Power Supply                 */
519    TW_FIX32   XResolution;            /* Resolution                   */
520    TW_FIX32   YResolution;            /* Resolution                   */
521    TW_UINT32  FlashUsed2;             /* Flash Used2                  */
522    TW_UINT32  AutomaticCapture;       /* Automatic Capture            */
523    TW_UINT32  TimeBeforeFirstCapture; /* Automatic Capture            */
524    TW_UINT32  TimeBetweenCaptures;    /* Automatic Capture            */
525 } TW_DEVICEEVENT, FAR * pTW_DEVICEEVENT;
526 
527 /* DAT_FILESYSTEM, information about TWAIN file system */
528 typedef struct {
529    /* DG_CONTROL / DAT_FILESYSTEM / MSG_xxxx fields     */
530    TW_STR255  InputName; /* The name of the input or source file */
531    TW_STR255  OutputName; /* The result of an operation or the name of a destination file */
532    TW_MEMREF  Context; /* Source specific data used to remember state information */
533    /* DG_CONTROL / DAT_FILESYSTEM / MSG_DELETE field    */
534    int        Recursive; /* recursively delete all sub-directories */
535    /* DG_CONTROL / DAT_FILESYSTEM / MSG_GETINFO fields  */
536    TW_INT32   FileType; /* One of the TWFT_xxxx values */
537    TW_UINT32  Size; /* Size of current FileType */
538    TW_STR32   CreateTimeDate; /* creation date of the file */
539    TW_STR32   ModifiedTimeDate; /* last date the file was modified */
540    TW_UINT32  FreeSpace; /* bytes of free space on the current device */
541    TW_INT32   NewImageSize; /* estimate of the amount of space a new image would take up */
542    TW_UINT32  NumberOfFiles; /* number of files, depends on FileType */
543    TW_UINT32  NumberOfSnippets; /* number of audio snippets */
544    TW_UINT32  DeviceGroupMask; /* used to group cameras (ex: front/rear bitonal, front/rear grayscale...) */
545    char       Reserved[508]; /**/
546 } TW_FILESYSTEM, FAR * pTW_FILESYSTEM;
547 
548 /* DAT_PASSTHRU, device dependant data to pass through Data Source */
549 typedef struct {
550    TW_MEMREF  pCommand;        /* Pointer to Command buffer */
551    TW_UINT32  CommandBytes;    /* Number of bytes in Command buffer */
552    TW_INT32   Direction;       /* One of the TWDR_xxxx values.  Defines the direction of data flow */
553    TW_MEMREF  pData;           /* Pointer to Data buffer */
554    TW_UINT32  DataBytes;       /* Number of bytes in Data buffer */
555    TW_UINT32  DataBytesXfered; /* Number of bytes successfully transferred */
556 } TW_PASSTHRU, FAR * pTW_PASSTHRU;
557 
558 /* DAT_SETUPAUDIOFILEXFER, information required to setup an audio file transfer */
559 typedef struct {
560    TW_STR255  FileName; /* full path target file */
561    TW_UINT16  Format;   /* one of TWAF_xxxx */
562    TW_INT16 VRefNum;
563 } TW_SETUPAUDIOFILEXFER, FAR * pTW_SETUPAUDIOFILEXFER;
564 
565 #ifdef _MAC_
566      /*
567      * Restore original Macintosh structure packing
568      */
569      #if PRAGMA_STRUCT_ALIGN
570           #pragma options align=reset
571      #elif PRAGMA_STRUCT_PACKPUSH
572           #pragma pack(pop)
573      #elif PRAGMA_STRUCT_PACK
574           #pragma pack()
575      #endif
576 #endif /* _MAC_ */
577 
578 /****************************************************************************
579  * Generic Constants                                                        *
580  ****************************************************************************/
581 
582 #define TWON_ARRAY           3 /* indicates TW_ARRAY container       */
583 #define TWON_ENUMERATION     4 /* indicates TW_ENUMERATION container */
584 #define TWON_ONEVALUE        5 /* indicates TW_ONEVALUE container    */
585 #define TWON_RANGE           6 /* indicates TW_RANGE container       */
586 
587 #define TWON_ICONID          962 /* res Id of icon used in USERSELECT lbox */
588 #define TWON_DSMID           461 /* res Id of the DSM version num resource */
589 #define TWON_DSMCODEID       63  /* res Id of the Mac SM Code resource     */
590 
591 #define TWON_DONTCARE8       0xff
592 #define TWON_DONTCARE16      0xffff
593 #define TWON_DONTCARE32      0xffffffff
594 
595 /* Flags used in TW_MEMORY structure. */
596 #define TWMF_APPOWNS     0x1
597 #define TWMF_DSMOWNS     0x2
598 #define TWMF_DSOWNS      0x4
599 #define TWMF_POINTER     0x8
600 #define TWMF_HANDLE      0x10
601 
602 /* Palette types for TW_PALETTE8 */
603 #define TWPA_RGB         0
604 #define TWPA_GRAY        1
605 #define TWPA_CMY         2
606 
607 /* There are four containers used for capabilities negotiation:
608  *    TWON_ONEVALUE, TWON_RANGE, TWON_ENUMERATION, TWON_ARRAY
609  * In each container structure ItemType can be TWTY_INT8, TWTY_INT16, etc.
610  * The kind of data stored in the container can be determined by doing
611  * DCItemSize[ItemType] where the following is defined in TWAIN glue code:
612  *          DCItemSize[]= { sizeof(TW_INT8),
613  *                          sizeof(TW_INT16),
614  *                          etc.
615  *                          sizeof(TW_UINT32) };
616  *
617  */
618 
619 #define TWTY_INT8        0x0000    /* Means Item is a TW_INT8   */
620 #define TWTY_INT16       0x0001    /* Means Item is a TW_INT16  */
621 #define TWTY_INT32       0x0002    /* Means Item is a TW_INT32  */
622 
623 #define TWTY_UINT8       0x0003    /* Means Item is a TW_UINT8  */
624 #define TWTY_UINT16      0x0004    /* Means Item is a TW_UINT16 */
625 #define TWTY_UINT32      0x0005    /* Means Item is a TW_UINT32 */
626 
627 #define TWTY_BOOL        0x0006    /* Means Item is a TW_BOOL   */
628 
629 #define TWTY_FIX32       0x0007    /* Means Item is a TW_FIX32  */
630 
631 #define TWTY_FRAME       0x0008    /* Means Item is a TW_FRAME  */
632 
633 #define TWTY_STR32       0x0009    /* Means Item is a TW_STR32  */
634 #define TWTY_STR64       0x000a    /* Means Item is a TW_STR64  */
635 #define TWTY_STR128      0x000b    /* Means Item is a TW_STR128 */
636 #define TWTY_STR255      0x000c    /* Means Item is a TW_STR255 */
637 #define TWTY_STR1024     0x000d    /* Means Item is a TW_STR1024...added 1.9 */
638 #define TWTY_UNI512      0x000e    /* Means Item is a TW_UNI512...added 1.9 */
639 
640 /****************************************************************************
641  * Capability Constants                                                     *
642  ****************************************************************************/
643 
644 /* ICAP_BITORDER values (BO_ means Bit Order) */
645 #define TWBO_LSBFIRST    0
646 #define TWBO_MSBFIRST    1
647 
648 /* ICAP_COMPRESSION values (CP_ means ComPression ) */
649 #define TWCP_NONE        0
650 #define TWCP_PACKBITS    1
651 #define TWCP_GROUP31D    2 /* Follows CCITT spec (no End Of Line)          */
652 #define TWCP_GROUP31DEOL 3 /* Follows CCITT spec (has End Of Line)         */
653 #define TWCP_GROUP32D    4 /* Follows CCITT spec (use cap for K Factor)    */
654 #define TWCP_GROUP4      5 /* Follows CCITT spec                           */
655 #define TWCP_JPEG        6 /* Use capability for more info                 */
656 #define TWCP_LZW         7 /* Must license from Unisys and IBM to use      */
657 #define TWCP_JBIG        8 /* For Bitonal images  -- Added 1.7 KHL         */
658 /* Added 1.8 */
659 #define TWCP_PNG         9
660 #define TWCP_RLE4        10
661 #define TWCP_RLE8        11
662 #define TWCP_BITFIELDS   12
663 
664 
665 /* ICAP_IMAGEFILEFORMAT values (FF_means File Format)   */
666 #define TWFF_TIFF        0    /* Tagged Image File Format     */
667 #define TWFF_PICT        1    /* Macintosh PICT               */
668 #define TWFF_BMP         2    /* Windows Bitmap               */
669 #define TWFF_XBM         3    /* X-Windows Bitmap             */
670 #define TWFF_JFIF        4    /* JPEG File Interchange Format */
671 #define TWFF_FPX         5    /* Flash Pix                    */
672 #define TWFF_TIFFMULTI   6    /* Multi-page tiff file         */
673 #define TWFF_PNG         7
674 #define TWFF_SPIFF       8
675 #define TWFF_EXIF        9
676 
677 
678 /* ICAP_FILTER values (FT_ means Filter Type) */
679 #define TWFT_RED         0
680 #define TWFT_GREEN       1
681 #define TWFT_BLUE        2
682 #define TWFT_NONE        3
683 #define TWFT_WHITE       4
684 #define TWFT_CYAN        5
685 #define TWFT_MAGENTA     6
686 #define TWFT_YELLOW      7
687 #define TWFT_BLACK       8
688 
689 /* ICAP_LIGHTPATH values (LP_ means Light Path) */
690 #define TWLP_REFLECTIVE   0
691 #define TWLP_TRANSMISSIVE 1
692 
693 /* ICAP_LIGHTSOURCE values (LS_ means Light Source) */
694 #define TWLS_RED         0
695 #define TWLS_GREEN       1
696 #define TWLS_BLUE        2
697 #define TWLS_NONE        3
698 #define TWLS_WHITE       4
699 #define TWLS_UV          5
700 #define TWLS_IR          6
701 
702 /* ICAP_ORIENTATION values (OR_ means ORientation) */
703 #define TWOR_ROT0        0
704 #define TWOR_ROT90       1
705 #define TWOR_ROT180      2
706 #define TWOR_ROT270      3
707 #define TWOR_PORTRAIT    TWOR_ROT0
708 #define TWOR_LANDSCAPE   TWOR_ROT270
709 
710 /* ICAP_PLANARCHUNKY values (PC_ means Planar/Chunky ) */
711 #define TWPC_CHUNKY      0
712 #define TWPC_PLANAR      1
713 
714 /* ICAP_PIXELFLAVOR values (PF_ means Pixel Flavor) */
715 #define TWPF_CHOCOLATE   0  /* zero pixel represents darkest shade  */
716 #define TWPF_VANILLA     1  /* zero pixel represents lightest shade */
717 
718 /* ICAP_PIXELTYPE values (PT_ means Pixel Type) */
719 #define TWPT_BW          0 /* Black and White */
720 #define TWPT_GRAY        1
721 #define TWPT_RGB         2
722 #define TWPT_PALETTE     3
723 #define TWPT_CMY         4
724 #define TWPT_CMYK        5
725 #define TWPT_YUV         6
726 #define TWPT_YUVK        7
727 #define TWPT_CIEXYZ      8
728 
729 /* ICAP_SUPPORTEDSIZES values (SS_ means Supported Sizes) */
730 #define TWSS_NONE        0
731 #define TWSS_A4LETTER    1
732 #define TWSS_B5LETTER    2
733 #define TWSS_USLETTER    3
734 #define TWSS_USLEGAL     4
735 /* Added 1.5 */
736 #define TWSS_A5          5
737 #define TWSS_B4          6
738 #define TWSS_B6          7
739 //#define TWSS_B          8
740 /* Added 1.7 */
741 #define TWSS_USLEDGER    9
742 #define TWSS_USEXECUTIVE 10
743 #define TWSS_A3          11
744 #define TWSS_B3          12
745 #define TWSS_A6          13
746 #define TWSS_C4          14
747 #define TWSS_C5          15
748 #define TWSS_C6          16
749 /* Added 1.8 */
750 #define TWSS_4A0          17
751 #define TWSS_2A0          18
752 #define TWSS_A0           19
753 #define TWSS_A1           20
754 #define TWSS_A2           21
755 #define TWSS_A4           TWSS_A4LETTER
756 #define TWSS_A7           22
757 #define TWSS_A8           23
758 #define TWSS_A9           24
759 #define TWSS_A10          25
760 #define TWSS_ISOB0        26
761 #define TWSS_ISOB1        27
762 #define TWSS_ISOB2        28
763 #define TWSS_ISOB3        TWSS_B3
764 #define TWSS_ISOB4        TWSS_B4
765 #define TWSS_ISOB5        29
766 #define TWSS_ISOB6        TWSS_B6
767 #define TWSS_ISOB7        30
768 #define TWSS_ISOB8        31
769 #define TWSS_ISOB9        32
770 #define TWSS_ISOB10       33
771 #define TWSS_JISB0        34
772 #define TWSS_JISB1        35
773 #define TWSS_JISB2        36
774 #define TWSS_JISB3        37
775 #define TWSS_JISB4        38
776 #define TWSS_JISB5        TWSS_B5LETTER
777 #define TWSS_JISB6        39
778 #define TWSS_JISB7        40
779 #define TWSS_JISB8        41
780 #define TWSS_JISB9        42
781 #define TWSS_JISB10       43
782 #define TWSS_C0           44
783 #define TWSS_C1           45
784 #define TWSS_C2           46
785 #define TWSS_C3           47
786 #define TWSS_C7           48
787 #define TWSS_C8           49
788 #define TWSS_C9           50
789 #define TWSS_C10          51
790 #define TWSS_USSTATEMENT  52
791 #define TWSS_BUSINESSCARD 53
792 
793 /* ICAP_XFERMECH values (SX_ means Setup XFer) */
794 #define TWSX_NATIVE      0
795 #define TWSX_FILE        1
796 #define TWSX_MEMORY      2
797 #define TWSX_FILE2       3    /* added 1.9 */
798 
799 /* ICAP_UNITS values (UN_ means UNits) */
800 #define TWUN_INCHES      0
801 #define TWUN_CENTIMETERS 1
802 #define TWUN_PICAS       2
803 #define TWUN_POINTS      3
804 #define TWUN_TWIPS       4
805 #define TWUN_PIXELS      5
806 
807 /* Added 1.5 */
808 /* ICAP_BITDEPTHREDUCTION values (BR_ means Bitdepth Reduction) */
809 #define TWBR_THRESHOLD     0
810 #define TWBR_HALFTONE      1
811 #define TWBR_CUSTHALFTONE  2
812 #define TWBR_DIFFUSION     3
813 
814 /* Added 1.7 */
815 /* ICAP_DUPLEX values */
816 #define TWDX_NONE         0
817 #define TWDX_1PASSDUPLEX  1
818 #define TWDX_2PASSDUPLEX  2
819 
820 /* Added 1.7 */
821 /* TWEI_BARCODETYPE values */
822 #define TWBT_3OF9                 0
823 #define TWBT_2OF5INTERLEAVED      1
824 #define TWBT_2OF5NONINTERLEAVED   2
825 #define TWBT_CODE93               3
826 #define TWBT_CODE128              4
827 #define TWBT_UCC128               5
828 #define TWBT_CODABAR              6
829 #define TWBT_UPCA                 7
830 #define TWBT_UPCE                 8
831 #define TWBT_EAN8                 9
832 #define TWBT_EAN13                10
833 #define TWBT_POSTNET              11
834 #define TWBT_PDF417               12
835 /* Added 1.8 */
836 #define TWBT_2OF5INDUSTRIAL       13
837 #define TWBT_2OF5MATRIX           14
838 #define TWBT_2OF5DATALOGIC        15
839 #define TWBT_2OF5IATA             16
840 #define TWBT_3OF9FULLASCII        17
841 #define TWBT_CODABARWITHSTARTSTOP 18
842 #define TWBT_MAXICODE             19
843 
844 /* Added 1.7 */
845 /* TWEI_DESKEWSTATUS values */
846 #define TWDSK_SUCCESS     0
847 #define TWDSK_REPORTONLY  1
848 #define TWDSK_FAIL        2
849 #define TWDSK_DISABLED    3
850 
851 /* Added 1.7 */
852 /* TWEI_PATCHCODE values */
853 #define TWPCH_PATCH1      0
854 #define TWPCH_PATCH2      1
855 #define TWPCH_PATCH3      2
856 #define TWPCH_PATCH4      3
857 #define TWPCH_PATCH6      4
858 #define TWPCH_PATCHT      5
859 
860 /* Added 1.7 */
861 /* CAP_JOBCONTROL values */
862 #define TWJC_NONE   0
863 #define TWJC_JSIC   1
864 #define TWJC_JSIS   2
865 #define TWJC_JSXC   3
866 #define TWJC_JSXS   4
867 
868 /* Added 1.7 */
869 /* TWEI_BARCODEROTATION values (BCOR_ means barcode rotation) */
870 #define TWBCOR_ROT0   0
871 #define TWBCOR_ROT90  1
872 #define TWBCOR_ROT180 2
873 #define TWBCOR_ROT270 3
874 #define TWBCOR_ROTX   4
875 
876 /* Added 1.8 */
877 /* ACAP_AUDIOFILEFORMAT values (AF_ means audio format) */
878 #define TWAF_WAV      0
879 #define TWAF_AIFF     1
880 #define TWAF_AU       3
881 #define TWAF_SND      4
882 
883 /* CAP_ALARMS values (AL_ means alarms) */
884 #define TWAL_ALARM          0
885 #define TWAL_FEEDERERROR    1
886 #define TWAL_FEEDERWARNING  2
887 #define TWAL_BARCODE        3
888 #define TWAL_DOUBLEFEED     4
889 #define TWAL_JAM            5
890 #define TWAL_PATCHCODE      6
891 #define TWAL_POWER          7
892 #define TWAL_SKEW           8
893 
894 /* CAP_CLEARBUFFERS values (CB_ means clear buffers) */
895 #define TWCB_AUTO           0
896 #define TWCB_CLEAR          1
897 #define TWCB_NOCLEAR        2
898 
899 /* CAP_DEVICEEVENT values (DE_ means device event) */
900 #define TWDE_CUSTOMEVENTS           0x8000
901 #define TWDE_CHECKAUTOMATICCAPTURE  0
902 #define TWDE_CHECKBATTERY           1
903 #define TWDE_CHECKDEVICEONLINE      2
904 #define TWDE_CHECKFLASH             3
905 #define TWDE_CHECKPOWERSUPPLY       4
906 #define TWDE_CHECKRESOLUTION        5
907 #define TWDE_DEVICEADDED            6
908 #define TWDE_DEVICEOFFLINE          7
909 #define TWDE_DEVICEREADY            8
910 #define TWDE_DEVICEREMOVED          9
911 #define TWDE_IMAGECAPTURED          10
912 #define TWDE_IMAGEDELETED           11
913 #define TWDE_PAPERDOUBLEFEED        12
914 #define TWDE_PAPERJAM               13
915 #define TWDE_LAMPFAILURE            14
916 #define TWDE_POWERSAVE              15
917 #define TWDE_POWERSAVENOTIFY        16
918 
919 /* CAP_FEEDERALIGNMENT values (FA_ means feeder alignment) */
920 #define TWFA_NONE   0
921 #define TWFA_LEFT   1
922 #define TWFA_CENTER 2
923 #define TWFA_RIGHT  3
924 
925 /* CAP_FEEDERORDER values (FO_ means feeder order) */
926 #define TWFO_FIRSTPAGEFIRST 0
927 #define TWFO_LASTPAGEFIRST  1
928 
929 /* CAP_FILESYSTEM values (FS_ means file system) */
930 #define TWFS_FILESYSTEM       0
931 #define TWFS_RECURSIVEDELETE  1
932 
933 /* CAP_POWERSUPPLY values (PS_ means power supply) */
934 #define TWPS_EXTERNAL 0
935 #define TWPS_BATTERY  1
936 
937 /* CAP_PRINTER values (PR_ means printer) */
938 #define TWPR_IMPRINTERTOPBEFORE     0
939 #define TWPR_IMPRINTERTOPAFTER      1
940 #define TWPR_IMPRINTERBOTTOMBEFORE  2
941 #define TWPR_IMPRINTERBOTTOMAFTER   3
942 #define TWPR_ENDORSERTOPBEFORE      4
943 #define TWPR_ENDORSERTOPAFTER       5
944 #define TWPR_ENDORSERBOTTOMBEFORE   6
945 #define TWPR_ENDORSERBOTTOMAFTER    7
946 
947 /* CAP_PRINTERMODE values (PM_ means printer mode) */
948 #define TWPM_SINGLESTRING     0
949 #define TWPM_MULTISTRING      1
950 #define TWPM_COMPOUNDSTRING   2
951 
952 /* ICAP_BARCODESEARCHMODE values (TWBD_ means search) */
953 #define TWBD_HORZ     0
954 #define TWBD_VERT     1
955 #define TWBD_HORZVERT 2
956 #define TWBD_VERTHORZ 3
957 
958 /* ICAP_FLASHUSED2 values (FL_ means flash) */
959 #define TWFL_NONE     0
960 #define TWFL_OFF      1
961 #define TWFL_ON       2
962 #define TWFL_AUTO     3
963 #define TWFL_REDEYE   4
964 
965 /* ICAP_FLIPROTATION values (FR_ means flip rotation) */
966 #define TWFR_BOOK     0
967 #define TWFR_FANFOLD  1
968 
969 /* ICAP_IMAGEFILTER values (IF_ means image filter) */
970 #define TWIF_NONE     0
971 #define TWIF_AUTO     1
972 #define TWIF_LOWPASS  2
973 #define TWIF_BANDPASS 3
974 #define TWIF_HIGHPASS 4
975 #define TWIF_TEXT     TWIF_BANDPASS
976 #define TWIF_FINELINE TWIF_HIGHPASS
977 
978 /* ICAP_NOISEFILTER values (NF_ means noise filter) */
979 #define TWNF_NONE         0
980 #define TWNF_AUTO         1
981 #define TWNF_LONEPIXEL    2
982 #define TWNF_MAJORITYRULE 3
983 
984 /* ICAP_OVERSCAN values (OV_ means overscan) */
985 #define TWOV_NONE       0
986 #define TWOV_AUTO       1
987 #define TWOV_TOPBOTTOM  2
988 #define TWOV_LEFTRIGHT  3
989 #define TWOV_ALL        4
990 
991 /* TW_FILESYSTEM.FileType values (FT_ means file type) */
992 #define TWFY_CAMERA         0
993 #define TWFY_CAMERATOP      1
994 #define TWFY_CAMERABOTTOM   2
995 #define TWFY_CAMERAPREVIEW  3
996 #define TWFY_DOMAIN         4
997 #define TWFY_HOST           5
998 #define TWFY_DIRECTORY      6
999 #define TWFY_IMAGE          7
1000 #define TWFY_UNKNOWN        8
1001 
1002 /* ICAP_JPEGQUALITY values (JQ_ means jpeg quality) */
1003 #define TWJQ_UNKNOWN       -4
1004 #define TWJQ_LOW           -3
1005 #define TWJQ_MEDIUM        -2
1006 #define TWJQ_HIGH          -1
1007 
1008 /****************************************************************************
1009  * Country Constants                                                        *
1010  ****************************************************************************/
1011 
1012 #define TWCY_AFGHANISTAN   1001
1013 #define TWCY_ALGERIA        213
1014 #define TWCY_AMERICANSAMOA  684
1015 #define TWCY_ANDORRA        033
1016 #define TWCY_ANGOLA        1002
1017 #define TWCY_ANGUILLA      8090
1018 #define TWCY_ANTIGUA       8091
1019 #define TWCY_ARGENTINA       54
1020 #define TWCY_ARUBA          297
1021 #define TWCY_ASCENSIONI     247
1022 #define TWCY_AUSTRALIA       61
1023 #define TWCY_AUSTRIA         43
1024 #define TWCY_BAHAMAS       8092
1025 #define TWCY_BAHRAIN        973
1026 #define TWCY_BANGLADESH     880
1027 #define TWCY_BARBADOS      8093
1028 #define TWCY_BELGIUM         32
1029 #define TWCY_BELIZE         501
1030 #define TWCY_BENIN          229
1031 #define TWCY_BERMUDA       8094
1032 #define TWCY_BHUTAN        1003
1033 #define TWCY_BOLIVIA        591
1034 #define TWCY_BOTSWANA       267
1035 #define TWCY_BRITAIN          6
1036 #define TWCY_BRITVIRGINIS  8095
1037 #define TWCY_BRAZIL          55
1038 #define TWCY_BRUNEI         673
1039 #define TWCY_BULGARIA       359
1040 #define TWCY_BURKINAFASO   1004
1041 #define TWCY_BURMA         1005
1042 #define TWCY_BURUNDI       1006
1043 #define TWCY_CAMAROON       237
1044 #define TWCY_CANADA           2
1045 #define TWCY_CAPEVERDEIS    238
1046 #define TWCY_CAYMANIS      8096
1047 #define TWCY_CENTRALAFREP  1007
1048 #define TWCY_CHAD          1008
1049 #define TWCY_CHILE           56
1050 #define TWCY_CHINA           86
1051 #define TWCY_CHRISTMASIS   1009
1052 #define TWCY_COCOSIS       1009
1053 #define TWCY_COLOMBIA        57
1054 #define TWCY_COMOROS       1010
1055 #define TWCY_CONGO         1011
1056 #define TWCY_COOKIS        1012
1057 #define TWCY_COSTARICA     506
1058 #define TWCY_CUBA           005
1059 #define TWCY_CYPRUS         357
1060 #define TWCY_CZECHOSLOVAKIA  42
1061 #define TWCY_DENMARK         45
1062 #define TWCY_DJIBOUTI      1013
1063 #define TWCY_DOMINICA      8097
1064 #define TWCY_DOMINCANREP   8098
1065 #define TWCY_EASTERIS      1014
1066 #define TWCY_ECUADOR        593
1067 #define TWCY_EGYPT           20
1068 #define TWCY_ELSALVADOR     503
1069 #define TWCY_EQGUINEA      1015
1070 #define TWCY_ETHIOPIA       251
1071 #define TWCY_FALKLANDIS    1016
1072 #define TWCY_FAEROEIS       298
1073 #define TWCY_FIJIISLANDS    679
1074 #define TWCY_FINLAND        358
1075 #define TWCY_FRANCE          33
1076 #define TWCY_FRANTILLES     596
1077 #define TWCY_FRGUIANA       594
1078 #define TWCY_FRPOLYNEISA    689
1079 #define TWCY_FUTANAIS      1043
1080 #define TWCY_GABON          241
1081 #define TWCY_GAMBIA         220
1082 #define TWCY_GERMANY         49
1083 #define TWCY_GHANA          233
1084 #define TWCY_GIBRALTER      350
1085 #define TWCY_GREECE          30
1086 #define TWCY_GREENLAND      299
1087 #define TWCY_GRENADA       8099
1088 #define TWCY_GRENEDINES    8015
1089 #define TWCY_GUADELOUPE     590
1090 #define TWCY_GUAM           671
1091 #define TWCY_GUANTANAMOBAY 5399
1092 #define TWCY_GUATEMALA      502
1093 #define TWCY_GUINEA         224
1094 #define TWCY_GUINEABISSAU  1017
1095 #define TWCY_GUYANA         592
1096 #define TWCY_HAITI          509
1097 #define TWCY_HONDURAS       504
1098 #define TWCY_HONGKONG      852
1099 #define TWCY_HUNGARY         36
1100 #define TWCY_ICELAND        354
1101 #define TWCY_INDIA           91
1102 #define TWCY_INDONESIA       62
1103 #define TWCY_IRAN            98
1104 #define TWCY_IRAQ           964
1105 #define TWCY_IRELAND        353
1106 #define TWCY_ISRAEL         972
1107 #define TWCY_ITALY           39
1108 #define TWCY_IVORYCOAST    225
1109 #define TWCY_JAMAICA       8010
1110 #define TWCY_JAPAN           81
1111 #define TWCY_JORDAN         962
1112 #define TWCY_KENYA          254
1113 #define TWCY_KIRIBATI      1018
1114 #define TWCY_KOREA           82
1115 #define TWCY_KUWAIT         965
1116 #define TWCY_LAOS          1019
1117 #define TWCY_LEBANON       1020
1118 #define TWCY_LIBERIA        231
1119 #define TWCY_LIBYA          218
1120 #define TWCY_LIECHTENSTEIN   41
1121 #define TWCY_LUXENBOURG     352
1122 #define TWCY_MACAO          853
1123 #define TWCY_MADAGASCAR    1021
1124 #define TWCY_MALAWI         265
1125 #define TWCY_MALAYSIA        60
1126 #define TWCY_MALDIVES       960
1127 #define TWCY_MALI          1022
1128 #define TWCY_MALTA          356
1129 #define TWCY_MARSHALLIS     692
1130 #define TWCY_MAURITANIA    1023
1131 #define TWCY_MAURITIUS      230
1132 #define TWCY_MEXICO           3
1133 #define TWCY_MICRONESIA     691
1134 #define TWCY_MIQUELON       508
1135 #define TWCY_MONACO          33
1136 #define TWCY_MONGOLIA      1024
1137 #define TWCY_MONTSERRAT    8011
1138 #define TWCY_MOROCCO        212
1139 #define TWCY_MOZAMBIQUE    1025
1140 #define TWCY_NAMIBIA        264
1141 #define TWCY_NAURU         1026
1142 #define TWCY_NEPAL          977
1143 #define TWCY_NETHERLANDS     31
1144 #define TWCY_NETHANTILLES   599
1145 #define TWCY_NEVIS         8012
1146 #define TWCY_NEWCALEDONIA   687
1147 #define TWCY_NEWZEALAND      64
1148 #define TWCY_NICARAGUA      505
1149 #define TWCY_NIGER          227
1150 #define TWCY_NIGERIA        234
1151 #define TWCY_NIUE          1027
1152 #define TWCY_NORFOLKI      1028
1153 #define TWCY_NORWAY          47
1154 #define TWCY_OMAN           968
1155 #define TWCY_PAKISTAN        92
1156 #define TWCY_PALAU         1029
1157 #define TWCY_PANAMA         507
1158 #define TWCY_PARAGUAY       595
1159 #define TWCY_PERU            51
1160 #define TWCY_PHILLIPPINES    63
1161 #define TWCY_PITCAIRNIS    1030
1162 #define TWCY_PNEWGUINEA     675
1163 #define TWCY_POLAND          48
1164 #define TWCY_PORTUGAL       351
1165 #define TWCY_QATAR          974
1166 #define TWCY_REUNIONI      1031
1167 #define TWCY_ROMANIA         40
1168 #define TWCY_RWANDA         250
1169 #define TWCY_SAIPAN         670
1170 #define TWCY_SANMARINO       39
1171 #define TWCY_SAOTOME       1033
1172 #define TWCY_SAUDIARABIA    966
1173 #define TWCY_SENEGAL        221
1174 #define TWCY_SEYCHELLESIS  1034
1175 #define TWCY_SIERRALEONE   1035
1176 #define TWCY_SINGAPORE       65
1177 #define TWCY_SOLOMONIS     1036
1178 #define TWCY_SOMALI        1037
1179 #define TWCY_SOUTHAFRICA    27
1180 #define TWCY_SPAIN           34
1181 #define TWCY_SRILANKA        94
1182 #define TWCY_STHELENA      1032
1183 #define TWCY_STKITTS       8013
1184 #define TWCY_STLUCIA       8014
1185 #define TWCY_STPIERRE       508
1186 #define TWCY_STVINCENT     8015
1187 #define TWCY_SUDAN         1038
1188 #define TWCY_SURINAME       597
1189 #define TWCY_SWAZILAND      268
1190 #define TWCY_SWEDEN          46
1191 #define TWCY_SWITZERLAND     41
1192 #define TWCY_SYRIA         1039
1193 #define TWCY_TAIWAN         886
1194 #define TWCY_TANZANIA       255
1195 #define TWCY_THAILAND        66
1196 #define TWCY_TOBAGO        8016
1197 #define TWCY_TOGO           228
1198 #define TWCY_TONGAIS        676
1199 #define TWCY_TRINIDAD      8016
1200 #define TWCY_TUNISIA        216
1201 #define TWCY_TURKEY          90
1202 #define TWCY_TURKSCAICOS   8017
1203 #define TWCY_TUVALU        1040
1204 #define TWCY_UGANDA         256
1205 #define TWCY_USSR             7
1206 #define TWCY_UAEMIRATES     971
1207 #define TWCY_UNITEDKINGDOM   44
1208 #define TWCY_USA              1
1209 #define TWCY_URUGUAY        598
1210 #define TWCY_VANUATU       1041
1211 #define TWCY_VATICANCITY     39
1212 #define TWCY_VENEZUELA       58
1213 #define TWCY_WAKE          1042
1214 #define TWCY_WALLISIS      1043
1215 #define TWCY_WESTERNSAHARA 1044
1216 #define TWCY_WESTERNSAMOA  1045
1217 #define TWCY_YEMEN         1046
1218 #define TWCY_YUGOSLAVIA      38
1219 #define TWCY_ZAIRE          243
1220 #define TWCY_ZAMBIA         260
1221 #define TWCY_ZIMBABWE       263
1222 /* Added for 1.8 */
1223 #define TWCY_ALBANIA        355
1224 #define TWCY_ARMENIA        374
1225 #define TWCY_AZERBAIJAN     994
1226 #define TWCY_BELARUS        375
1227 #define TWCY_BOSNIAHERZGO   387
1228 #define TWCY_CAMBODIA       855
1229 #define TWCY_CROATIA        385
1230 #define TWCY_CZECHREPUBLIC  420
1231 #define TWCY_DIEGOGARCIA    246
1232 #define TWCY_ERITREA        291
1233 #define TWCY_ESTONIA        372
1234 #define TWCY_GEORGIA        995
1235 #define TWCY_LATVIA         371
1236 #define TWCY_LESOTHO        266
1237 #define TWCY_LITHUANIA      370
1238 #define TWCY_MACEDONIA      389
1239 #define TWCY_MAYOTTEIS      269
1240 #define TWCY_MOLDOVA        373
1241 #define TWCY_MYANMAR        95
1242 #define TWCY_NORTHKOREA     850
1243 #define TWCY_PUERTORICO     787
1244 #define TWCY_RUSSIA         7
1245 #define TWCY_SERBIA         381
1246 #define TWCY_SLOVAKIA       421
1247 #define TWCY_SLOVENIA       386
1248 #define TWCY_SOUTHKOREA     82
1249 #define TWCY_UKRAINE        380
1250 #define TWCY_USVIRGINIS     340
1251 #define TWCY_VIETNAM        84
1252 
1253 /****************************************************************************
1254  * Language Constants                                                       *
1255  ****************************************************************************/
1256 
1257 #define TWLG_DAN              0 /* Danish                 */
1258 #define TWLG_DUT              1 /* Dutch                  */
1259 #define TWLG_ENG              2 /* International English  */
1260 #define TWLG_FCF              3 /* French Canadian        */
1261 #define TWLG_FIN              4 /* Finnish                */
1262 #define TWLG_FRN              5 /* French                 */
1263 #define TWLG_GER              6 /* German                 */
1264 #define TWLG_ICE              7 /* Icelandic              */
1265 #define TWLG_ITN              8 /* Italian                */
1266 #define TWLG_NOR              9 /* Norwegian              */
1267 #define TWLG_POR             10 /* Portuguese             */
1268 #define TWLG_SPA             11 /* Spanish                */
1269 #define TWLG_SWE             12 /* Swedish                */
1270 #define TWLG_USA             13 /* U.S. English           */
1271 /* Added for 1.8 */
1272 #define TWLG_USERLOCALE           -1
1273 #define TWLG_AFRIKAANS            14
1274 #define TWLG_ALBANIA              15
1275 #define TWLG_ARABIC               16
1276 #define TWLG_ARABIC_ALGERIA       17
1277 #define TWLG_ARABIC_BAHRAIN       18
1278 #define TWLG_ARABIC_EGYPT         19
1279 #define TWLG_ARABIC_IRAQ          20
1280 #define TWLG_ARABIC_JORDAN        21
1281 #define TWLG_ARABIC_KUWAIT        22
1282 #define TWLG_ARABIC_LEBANON       23
1283 #define TWLG_ARABIC_LIBYA         24
1284 #define TWLG_ARABIC_MOROCCO       25
1285 #define TWLG_ARABIC_OMAN          26
1286 #define TWLG_ARABIC_QATAR         27
1287 #define TWLG_ARABIC_SAUDIARABIA   28
1288 #define TWLG_ARABIC_SYRIA         29
1289 #define TWLG_ARABIC_TUNISIA       30
1290 #define TWLG_ARABIC_UAE           31 /* United Arabic Emirates */
1291 #define TWLG_ARABIC_YEMEN         32
1292 #define TWLG_BASQUE               33
1293 #define TWLG_BYELORUSSIAN         34
1294 #define TWLG_BULGARIAN            35
1295 #define TWLG_CATALAN              36
1296 #define TWLG_CHINESE              37
1297 #define TWLG_CHINESE_HONGKONG     38
1298 #define TWLG_CHINESE_PRC          39 /* People's Republic of China */
1299 #define TWLG_CHINESE_SINGAPORE    40
1300 #define TWLG_CHINESE_SIMPLIFIED   41
1301 #define TWLG_CHINESE_TAIWAN       42
1302 #define TWLG_CHINESE_TRADITIONAL  43
1303 #define TWLG_CROATIA              44
1304 #define TWLG_CZECH                45
1305 #define TWLG_DANISH               TWLG_DAN
1306 #define TWLG_DUTCH                TWLG_DUT
1307 #define TWLG_DUTCH_BELGIAN        46
1308 #define TWLG_ENGLISH              TWLG_ENG
1309 #define TWLG_ENGLISH_AUSTRALIAN   47
1310 #define TWLG_ENGLISH_CANADIAN     48
1311 #define TWLG_ENGLISH_IRELAND      49
1312 #define TWLG_ENGLISH_NEWZEALAND   50
1313 #define TWLG_ENGLISH_SOUTHAFRICA  51
1314 #define TWLG_ENGLISH_UK           52
1315 #define TWLG_ENGLISH_USA          TWLG_USA
1316 #define TWLG_ESTONIAN             53
1317 #define TWLG_FAEROESE             54
1318 #define TWLG_FARSI                55
1319 #define TWLG_FINNISH              TWLG_FIN
1320 #define TWLG_FRENCH               TWLG_FRN
1321 #define TWLG_FRENCH_BELGIAN       56
1322 #define TWLG_FRENCH_CANADIAN      TWLG_FCF
1323 #define TWLG_FRENCH_LUXEMBOURG    57
1324 #define TWLG_FRENCH_SWISS         58
1325 #define TWLG_GERMAN               TWLG_GER
1326 #define TWLG_GERMAN_AUSTRIAN      59
1327 #define TWLG_GERMAN_LUXEMBOURG    60
1328 #define TWLG_GERMAN_LIECHTENSTEIN 61
1329 #define TWLG_GERMAN_SWISS         62
1330 #define TWLG_GREEK                63
1331 #define TWLG_HEBREW               64
1332 #define TWLG_HUNGARIAN            65
1333 #define TWLG_ICELANDIC            TWLG_ICE
1334 #define TWLG_INDONESIAN           66
1335 #define TWLG_ITALIAN              TWLG_ITN
1336 #define TWLG_ITALIAN_SWISS        67
1337 #define TWLG_JAPANESE             68
1338 #define TWLG_KOREAN               69
1339 #define TWLG_KOREAN_JOHAB         70
1340 #define TWLG_LATVIAN              71
1341 #define TWLG_LITHUANIAN           72
1342 #define TWLG_NORWEGIAN            TWLG_NOR
1343 #define TWLG_NORWEGIAN_BOKMAL     73
1344 #define TWLG_NORWEGIAN_NYNORSK    74
1345 #define TWLG_POLISH               75
1346 #define TWLG_PORTUGUESE           TWLG_POR
1347 #define TWLG_PORTUGUESE_BRAZIL    76
1348 #define TWLG_ROMANIAN             77
1349 #define TWLG_RUSSIAN              78
1350 #define TWLG_SERBIAN_LATIN        79
1351 #define TWLG_SLOVAK               80
1352 #define TWLG_SLOVENIAN            81
1353 #define TWLG_SPANISH              TWLG_SPA
1354 #define TWLG_SPANISH_MEXICAN      82
1355 #define TWLG_SPANISH_MODERN       83
1356 #define TWLG_SWEDISH              TWLG_SWE
1357 #define TWLG_THAI                 84
1358 #define TWLG_TURKISH              85
1359 #define TWLG_UKRANIAN             86
1360 /* More stuff added for 1.8 */
1361 #define TWLG_ASSAMESE             87
1362 #define TWLG_BENGALI              88
1363 #define TWLG_BIHARI               89
1364 #define TWLG_BODO                 90
1365 #define TWLG_DOGRI                91
1366 #define TWLG_GUJARATI             92
1367 #define TWLG_HARYANVI             93
1368 #define TWLG_HINDI                94
1369 #define TWLG_KANNADA              95
1370 #define TWLG_KASHMIRI             96
1371 #define TWLG_MALAYALAM            97
1372 #define TWLG_MARATHI              98
1373 #define TWLG_MARWARI              99
1374 #define TWLG_MEGHALAYAN          100
1375 #define TWLG_MIZO                101
1376 #define TWLG_NAGA                102
1377 #define TWLG_ORISSI              103
1378 #define TWLG_PUNJABI             104
1379 #define TWLG_PUSHTU              105
1380 #define TWLG_SERBIAN_CYRILLIC    106
1381 #define TWLG_SIKKIMI             107
1382 #define TWLG_SWEDISH_FINLAND     108
1383 #define TWLG_TAMIL               109
1384 #define TWLG_TELUGU              110
1385 #define TWLG_TRIPURI             111
1386 #define TWLG_URDU                112
1387 #define TWLG_VIETNAMESE          113
1388 
1389 /****************************************************************************
1390  * Data Groups                                                              *
1391  ****************************************************************************/
1392 
1393 /* More Data Groups may be added in the future.
1394  * Possible candidates include text, vector graphics, sound, etc.
1395  * NOTE: Data Group constants must be powers of 2 as they are used
1396  *       as bitflags when Application asks DSM to present a list of DSs.
1397  */
1398 
1399 #define DG_CONTROL          0x0001L /* data pertaining to control       */
1400 #define DG_IMAGE            0x0002L /* data pertaining to raster images */
1401 /* Added 1.8 */
1402 #define DG_AUDIO            0x0004L /* data pertaining to audio */
1403 
1404 /****************************************************************************
1405  * Data Argument Types                                                      *
1406  ****************************************************************************/
1407 
1408 /*  SDH - 03/23/95 - WATCH                                                  */
1409 /*  The thunker requires knowledge about size of data being passed in the   */
1410 /*  lpData parameter to DS_Entry (which is not readily available due to     */
1411 /*  type LPVOID.  Thus, we key off the DAT_ argument to determine the size. */
1412 /*  This has a couple implications:                                         */
1413 /*  1) Any additional DAT_ features require modifications to the thunk code */
1414 /*     for thunker support.                                                 */
1415 /*  2) Any applications which use the custom capabailites are not supported */
1416 /*     under thunking since we have no way of knowing what size data (if    */
1417 /*     any) is being passed.                                                */
1418 
1419 #define DAT_NULL            0x0000 /* No data or structure. */
1420 #define DAT_CUSTOMBASE      0x8000 /* Base of custom DATs.  */
1421 
1422 /* Data Argument Types for the DG_CONTROL Data Group. */
1423 #define DAT_CAPABILITY      0x0001 /* TW_CAPABILITY                        */
1424 #define DAT_EVENT           0x0002 /* TW_EVENT                             */
1425 #define DAT_IDENTITY        0x0003 /* TW_IDENTITY                          */
1426 #define DAT_PARENT          0x0004 /* TW_HANDLE, application win handle in Windows */
1427 #define DAT_PENDINGXFERS    0x0005 /* TW_PENDINGXFERS                      */
1428 #define DAT_SETUPMEMXFER    0x0006 /* TW_SETUPMEMXFER                      */
1429 #define DAT_SETUPFILEXFER   0x0007 /* TW_SETUPFILEXFER                     */
1430 #define DAT_STATUS          0x0008 /* TW_STATUS                            */
1431 #define DAT_USERINTERFACE   0x0009 /* TW_USERINTERFACE                     */
1432 #define DAT_XFERGROUP       0x000a /* TW_UINT32                            */
1433 /*  SDH - 03/21/95 - TWUNK                                         */
1434 /*  Additional message required for thunker to request the special */
1435 /*  identity information.                                          */
1436 #define DAT_TWUNKIDENTITY   0x000b /* TW_TWUNKIDENTITY                     */
1437 #define DAT_CUSTOMDSDATA    0x000c /* TW_CUSTOMDSDATA.                     */
1438 /* Added 1.8 */
1439 #define DAT_DEVICEEVENT     0x000d /* TW_DEVICEEVENT                       */
1440 #define DAT_FILESYSTEM      0x000e /* TW_FILESYSTEM                        */
1441 #define DAT_PASSTHRU        0x000f /* TW_PASSTHRU                          */
1442 
1443 /* Data Argument Types for the DG_IMAGE Data Group. */
1444 #define DAT_IMAGEINFO       0x0101 /* TW_IMAGEINFO                         */
1445 #define DAT_IMAGELAYOUT     0x0102 /* TW_IMAGELAYOUT                       */
1446 #define DAT_IMAGEMEMXFER    0x0103 /* TW_IMAGEMEMXFER                      */
1447 #define DAT_IMAGENATIVEXFER 0x0104 /* TW_UINT32 loword is hDIB, PICHandle  */
1448 #define DAT_IMAGEFILEXFER   0x0105 /* Null data                            */
1449 #define DAT_CIECOLOR        0x0106 /* TW_CIECOLOR                          */
1450 #define DAT_GRAYRESPONSE    0x0107 /* TW_GRAYRESPONSE                      */
1451 #define DAT_RGBRESPONSE     0x0108 /* TW_RGBRESPONSE                       */
1452 #define DAT_JPEGCOMPRESSION 0x0109 /* TW_JPEGCOMPRESSION                   */
1453 #define DAT_PALETTE8        0x010a /* TW_PALETTE8                          */
1454 #define DAT_EXTIMAGEINFO    0x010b /* TW_EXTIMAGEINFO -- for 1.7 Spec.     */
1455 
1456 /* Added 1.8 */
1457 /* Data Argument Types for the DG_AUDIO Data Group. */
1458 #define DAT_AUDIOFILEXFER   0x0201 /* Null data                            */
1459 #define DAT_AUDIOINFO       0x0202 /* TW_AUDIOINFO                         */
1460 #define DAT_AUDIONATIVEXFER 0x0203 /* TW_UINT32 handle to WAV, (AIFF Mac)  */
1461 
1462 /* Added 1.9 */
1463 #define DAT_ SETUPFILEXFER2 0x0301 /* New file xfer operation              */
1464 
1465 /****************************************************************************
1466  * Messages                                                                 *
1467  ****************************************************************************/
1468 
1469 /* All message constants are unique.
1470  * Messages are grouped according to which DATs they are used with.*/
1471 
1472 #define MSG_NULL         0x0000 /* Used in TW_EVENT structure               */
1473 #define MSG_CUSTOMBASE   0x8000 /* Base of custom messages                  */
1474 
1475 /* Generic messages may be used with any of several DATs.                   */
1476 #define MSG_GET          0x0001 /* Get one or more values                   */
1477 #define MSG_GETCURRENT   0x0002 /* Get current value                        */
1478 #define MSG_GETDEFAULT   0x0003 /* Get default (e.g. power up) value        */
1479 #define MSG_GETFIRST     0x0004 /* Get first of a series of items, e.g. DSs */
1480 #define MSG_GETNEXT      0x0005 /* Iterate through a series of items.       */
1481 #define MSG_SET          0x0006 /* Set one or more values                   */
1482 #define MSG_RESET        0x0007 /* Set current value to default value       */
1483 #define MSG_QUERYSUPPORT 0x0008 /* Get supported operations on the cap.     */
1484 
1485 /* Messages used with DAT_NULL                                              */
1486 #define MSG_XFERREADY    0x0101 /* The data source has data ready           */
1487 #define MSG_CLOSEDSREQ   0x0102 /* Request for Application. to close DS             */
1488 #define MSG_CLOSEDSOK    0x0103 /* Tell the Application. to save the state.         */
1489 /* Added 1.8 */
1490 #define MSG_DEVICEEVENT  0X0104 /* Some event has taken place               */
1491 
1492 /* Messages used with a pointer to a DAT_STATUS structure                   */
1493 #define MSG_CHECKSTATUS  0x0201 /* Get status information                   */
1494 
1495 /* Messages used with a pointer to DAT_PARENT data                          */
1496 #define MSG_OPENDSM      0x0301 /* Open the DSM                             */
1497 #define MSG_CLOSEDSM     0x0302 /* Close the DSM                            */
1498 
1499 /* Messages used with a pointer to a DAT_IDENTITY structure                 */
1500 #define MSG_OPENDS       0x0401 /* Open a data source                       */
1501 #define MSG_CLOSEDS      0x0402 /* Close a data source                      */
1502 #define MSG_USERSELECT   0x0403 /* Put up a dialog of all DS                */
1503 
1504 /* Messages used with a pointer to a DAT_USERINTERFACE structure            */
1505 #define MSG_DISABLEDS    0x0501 /* Disable data transfer in the DS          */
1506 #define MSG_ENABLEDS     0x0502 /* Enable data transfer in the DS           */
1507 #define MSG_ENABLEDSUIONLY  0x0503  /* Enable for saving DS state only.     */
1508 
1509 /* Messages used with a pointer to a DAT_EVENT structure                    */
1510 #define MSG_PROCESSEVENT 0x0601
1511 
1512 /* Messages used with a pointer to a DAT_PENDINGXFERS structure             */
1513 #define MSG_ENDXFER      0x0701
1514 #define MSG_STOPFEEDER   0x0702
1515 
1516 /* Added 1.8 */
1517 /* Messages used with a pointer to a DAT_FILESYSTEM structure               */
1518 #define MSG_CHANGEDIRECTORY   0x0801
1519 #define MSG_CREATEDIRECTORY   0x0802
1520 #define MSG_DELETE            0x0803
1521 #define MSG_FORMATMEDIA       0x0804
1522 #define MSG_GETCLOSE          0x0805
1523 #define MSG_GETFIRSTFILE      0x0806
1524 #define MSG_GETINFO           0x0807
1525 #define MSG_GETNEXTFILE       0x0808
1526 #define MSG_RENAME            0x0809
1527 #define MSG_COPY              0x080A
1528 #define MSG_AUTOMATICCAPTUREDIRECTORY 0x080B
1529 
1530 
1531 /* Messages used with a pointer to a DAT_PASSTHRU structure                 */
1532 #define MSG_PASSTHRU          0x0901
1533 
1534 /****************************************************************************
1535  * Capabilities                                                             *
1536  ****************************************************************************/
1537 
1538 #define CAP_CUSTOMBASE          0x8000 /* Base of custom capabilities */
1539 
1540 /* all data sources are REQUIRED to support these caps */
1541 #define CAP_XFERCOUNT           0x0001
1542 
1543 /* image data sources are REQUIRED to support these caps */
1544 #define ICAP_COMPRESSION        0x0100
1545 #define ICAP_PIXELTYPE          0x0101
1546 #define ICAP_UNITS              0x0102 /* default is TWUN_INCHES */
1547 #define ICAP_XFERMECH           0x0103
1548 
1549 /* all data sources MAY support these caps */
1550 #define CAP_AUTHOR                  0x1000
1551 #define CAP_CAPTION                 0x1001
1552 #define CAP_FEEDERENABLED           0x1002
1553 #define CAP_FEEDERLOADED            0x1003
1554 #define CAP_TIMEDATE                0x1004
1555 #define CAP_SUPPORTEDCAPS           0x1005
1556 #define CAP_EXTENDEDCAPS            0x1006
1557 #define CAP_AUTOFEED                0x1007
1558 #define CAP_CLEARPAGE               0x1008
1559 #define CAP_FEEDPAGE                0x1009
1560 #define CAP_REWINDPAGE              0x100a
1561 #define CAP_INDICATORS              0x100b   /* Added 1.1 */
1562 #define CAP_SUPPORTEDCAPSEXT        0x100c   /* Added 1.6 */
1563 #define CAP_PAPERDETECTABLE         0x100d   /* Added 1.6 */
1564 #define CAP_UICONTROLLABLE          0x100e   /* Added 1.6 */
1565 #define CAP_DEVICEONLINE            0x100f   /* Added 1.6 */
1566 #define CAP_AUTOSCAN                0x1010   /* Added 1.6 */
1567 #define CAP_THUMBNAILSENABLED       0x1011   /* Added 1.7 */
1568 #define CAP_DUPLEX                  0x1012   /* Added 1.7 */
1569 #define CAP_DUPLEXENABLED           0x1013   /* Added 1.7 */
1570 #define CAP_ENABLEDSUIONLY          0x1014   /* Added 1.7 */
1571 #define CAP_CUSTOMDSDATA            0x1015   /* Added 1.7 */
1572 #define CAP_ENDORSER                0x1016   /* Added 1.7 */
1573 #define CAP_JOBCONTROL              0x1017   /* Added 1.7 */
1574 #define CAP_ALARMS                  0x1018   /* Added 1.8 */
1575 #define CAP_ALARMVOLUME             0x1019   /* Added 1.8 */
1576 #define CAP_AUTOMATICCAPTURE        0x101a   /* Added 1.8 */
1577 #define CAP_TIMEBEFOREFIRSTCAPTURE  0x101b   /* Added 1.8 */
1578 #define CAP_TIMEBETWEENCAPTURES     0x101c   /* Added 1.8 */
1579 #define CAP_CLEARBUFFERS            0x101d   /* Added 1.8 */
1580 #define CAP_MAXBATCHBUFFERS         0x101e   /* Added 1.8 */
1581 #define CAP_DEVICETIMEDATE          0x101f   /* Added 1.8 */
1582 #define CAP_POWERSUPPLY             0x1020   /* Added 1.8 */
1583 #define CAP_CAMERAPREVIEWUI         0x1021   /* Added 1.8 */
1584 #define CAP_DEVICEEVENT             0x1022   /* Added 1.8 */
1585 #define CAP_SERIALNUMBER            0x1024   /* Added 1.8 */
1586 #define CAP_PRINTER                 0x1026   /* Added 1.8 */
1587 #define CAP_PRINTERENABLED          0x1027   /* Added 1.8 */
1588 #define CAP_PRINTERINDEX            0x1028   /* Added 1.8 */
1589 #define CAP_PRINTERMODE             0x1029   /* Added 1.8 */
1590 #define CAP_PRINTERSTRING           0x102a   /* Added 1.8 */
1591 #define CAP_PRINTERSUFFIX           0x102b   /* Added 1.8 */
1592 #define CAP_LANGUAGE                0x102c   /* Added 1.8 */
1593 #define CAP_FEEDERALIGNMENT         0x102d   /* Added 1.8 */
1594 #define CAP_FEEDERORDER             0x102e   /* Added 1.8 */
1595 #define CAP_REACQUIREALLOWED        0x1030   /* Added 1.8 */
1596 #define CAP_BATTERYMINUTES          0x1032   /* Added 1.8 */
1597 #define CAP_BATTERYPERCENTAGE       0x1033   /* Added 1.8 */
1598 
1599 /* image data sources MAY support these caps */
1600 #define ICAP_AUTOBRIGHT                   0x1100
1601 #define ICAP_BRIGHTNESS                   0x1101
1602 #define ICAP_CONTRAST                     0x1103
1603 #define ICAP_CUSTHALFTONE                 0x1104
1604 #define ICAP_EXPOSURETIME                 0x1105
1605 #define ICAP_FILTER                       0x1106
1606 #define ICAP_FLASHUSED                    0x1107
1607 #define ICAP_GAMMA                        0x1108
1608 #define ICAP_HALFTONES                    0x1109
1609 #define ICAP_HIGHLIGHT                    0x110a
1610 #define ICAP_IMAGEFILEFORMAT              0x110c
1611 #define ICAP_LAMPSTATE                    0x110d
1612 #define ICAP_LIGHTSOURCE                  0x110e
1613 #define ICAP_ORIENTATION                  0x1110
1614 #define ICAP_PHYSICALWIDTH                0x1111
1615 #define ICAP_PHYSICALHEIGHT               0x1112
1616 #define ICAP_SHADOW                       0x1113
1617 #define ICAP_FRAMES                       0x1114
1618 #define ICAP_XNATIVERESOLUTION            0x1116
1619 #define ICAP_YNATIVERESOLUTION            0x1117
1620 #define ICAP_XRESOLUTION                  0x1118
1621 #define ICAP_YRESOLUTION                  0x1119
1622 #define ICAP_MAXFRAMES                    0x111a
1623 #define ICAP_TILES                        0x111b
1624 #define ICAP_BITORDER                     0x111c
1625 #define ICAP_CCITTKFACTOR                 0x111d
1626 #define ICAP_LIGHTPATH                    0x111e
1627 #define ICAP_PIXELFLAVOR                  0x111f
1628 #define ICAP_PLANARCHUNKY                 0x1120
1629 #define ICAP_ROTATION                     0x1121
1630 #define ICAP_SUPPORTEDSIZES               0x1122
1631 #define ICAP_THRESHOLD                    0x1123
1632 #define ICAP_XSCALING                     0x1124
1633 #define ICAP_YSCALING                     0x1125
1634 #define ICAP_BITORDERCODES                0x1126
1635 #define ICAP_PIXELFLAVORCODES             0x1127
1636 #define ICAP_JPEGPIXELTYPE                0x1128
1637 #define ICAP_TIMEFILL                     0x112a
1638 #define ICAP_BITDEPTH                     0x112b
1639 #define ICAP_BITDEPTHREDUCTION            0x112c  /* Added 1.5 */
1640 #define ICAP_UNDEFINEDIMAGESIZE           0x112d  /* Added 1.6 */
1641 #define ICAP_IMAGEDATASET                 0x112e  /* Added 1.7 */
1642 #define ICAP_EXTIMAGEINFO                 0x112f  /* Added 1.7 */
1643 #define ICAP_MINIMUMHEIGHT                0x1130  /* Added 1.7 */
1644 #define ICAP_MINIMUMWIDTH                 0x1131  /* Added 1.7 */
1645 #define ICAP_FLIPROTATION                 0x1136  /* Added 1.8 */
1646 #define ICAP_BARCODEDETECTIONENABLED      0x1137  /* Added 1.8 */
1647 #define ICAP_SUPPORTEDBARCODETYPES        0x1138  /* Added 1.8 */
1648 #define ICAP_BARCODEMAXSEARCHPRIORITIES   0x1139  /* Added 1.8 */
1649 #define ICAP_BARCODESEARCHPRIORITIES      0x113a  /* Added 1.8 */
1650 #define ICAP_BARCODESEARCHMODE            0x113b  /* Added 1.8 */
1651 #define ICAP_BARCODEMAXRETRIES            0x113c  /* Added 1.8 */
1652 #define ICAP_BARCODETIMEOUT               0x113d  /* Added 1.8 */
1653 #define ICAP_ZOOMFACTOR                   0x113e  /* Added 1.8 */
1654 #define ICAP_PATCHCODEDETECTIONENABLED    0x113f  /* Added 1.8 */
1655 #define ICAP_SUPPORTEDPATCHCODETYPES      0x1140  /* Added 1.8 */
1656 #define ICAP_PATCHCODEMAXSEARCHPRIORITIES 0x1141  /* Added 1.8 */
1657 #define ICAP_PATCHCODESEARCHPRIORITIES    0x1142  /* Added 1.8 */
1658 #define ICAP_PATCHCODESEARCHMODE          0x1143  /* Added 1.8 */
1659 #define ICAP_PATCHCODEMAXRETRIES          0x1144  /* Added 1.8 */
1660 #define ICAP_PATCHCODETIMEOUT             0x1145  /* Added 1.8 */
1661 #define ICAP_FLASHUSED2                   0x1146  /* Added 1.8 */
1662 #define ICAP_IMAGEFILTER                  0x1147  /* Added 1.8 */
1663 #define ICAP_NOISEFILTER                  0x1148  /* Added 1.8 */
1664 #define ICAP_OVERSCAN                     0x1149  /* Added 1.8 */
1665 #define ICAP_AUTOMATICBORDERDETECTION     0x1150  /* Added 1.8 */
1666 #define ICAP_AUTOMATICDESKEW              0x1151  /* Added 1.8 */
1667 #define ICAP_AUTOMATICROTATE              0x1152  /* Added 1.8 */
1668 #define ICAP_JPEGQUALITY                  0x1153  /* Added 1.9 */
1669 
1670 /* image data sources MAY support these audio caps */
1671 #define ACAP_AUDIOFILEFORMAT    0x1201  /* Added 1.8 */
1672 #define ACAP_XFERMECH           0x1202  /* Added 1.8 */
1673 
1674 /* ----------------------------------------------------------------------- *\
1675 
1676   Version 1.7:      Following is Extended Image Info Attributes.
1677   July 1997
1678   KHL
1679 
1680 \* ----------------------------------------------------------------------- */
1681 
1682 #define TWEI_BARCODEX               0x1200
1683 #define TWEI_BARCODEY               0x1201
1684 #define TWEI_BARCODETEXT            0x1202
1685 #define TWEI_BARCODETYPE            0x1203
1686 #define TWEI_DESHADETOP             0x1204
1687 #define TWEI_DESHADELEFT            0x1205
1688 #define TWEI_DESHADEHEIGHT          0x1206
1689 #define TWEI_DESHADEWIDTH           0x1207
1690 #define TWEI_DESHADESIZE            0x1208
1691 #define TWEI_SPECKLESREMOVED        0x1209
1692 #define TWEI_HORZLINEXCOORD         0x120A
1693 #define TWEI_HORZLINEYCOORD         0x120B
1694 #define TWEI_HORZLINELENGTH         0x120C
1695 #define TWEI_HORZLINETHICKNESS      0x120D
1696 #define TWEI_VERTLINEXCOORD         0x120E
1697 #define TWEI_VERTLINEYCOORD         0x120F
1698 #define TWEI_VERTLINELENGTH         0x1210
1699 #define TWEI_VERTLINETHICKNESS      0x1211
1700 #define TWEI_PATCHCODE              0x1212
1701 #define TWEI_ENDORSEDTEXT           0x1213
1702 #define TWEI_FORMCONFIDENCE         0x1214
1703 #define TWEI_FORMTEMPLATEMATCH      0x1215
1704 #define TWEI_FORMTEMPLATEPAGEMATCH  0x1216
1705 #define TWEI_FORMHORZDOCOFFSET      0x1217
1706 #define TWEI_FORMVERTDOCOFFSET      0x1218
1707 #define TWEI_BARCODECOUNT           0x1219
1708 #define TWEI_BARCODECONFIDENCE      0x121A
1709 #define TWEI_BARCODEROTATION        0x121B
1710 #define TWEI_BARCODETEXTLENGTH      0x121C
1711 #define TWEI_DESHADECOUNT           0x121D
1712 #define TWEI_DESHADEBLACKCOUNTOLD   0x121E
1713 #define TWEI_DESHADEBLACKCOUNTNEW   0x121F
1714 #define TWEI_DESHADEBLACKRLMIN      0x1220
1715 #define TWEI_DESHADEBLACKRLMAX      0x1221
1716 #define TWEI_DESHADEWHITECOUNTOLD   0x1222
1717 #define TWEI_DESHADEWHITECOUNTNEW   0x1223
1718 #define TWEI_DESHADEWHITERLMIN      0x1224
1719 #define TWEI_DESHADEWHITERLAVE      0x1225
1720 #define TWEI_DESHADEWHITERLMAX      0x1226
1721 #define TWEI_BLACKSPECKLESREMOVED   0x1227
1722 #define TWEI_WHITESPECKLESREMOVED   0x1228
1723 #define TWEI_HORZLINECOUNT          0x1229
1724 #define TWEI_VERTLINECOUNT          0x122A
1725 #define TWEI_DESKEWSTATUS           0x122B
1726 #define TWEI_SKEWORIGINALANGLE      0x122C
1727 #define TWEI_SKEWFINALANGLE         0x122D
1728 #define TWEI_SKEWCONFIDENCE         0x122E
1729 #define TWEI_SKEWWINDOWX1           0x122F
1730 #define TWEI_SKEWWINDOWY1           0x1230
1731 #define TWEI_SKEWWINDOWX2           0x1231
1732 #define TWEI_SKEWWINDOWY2           0x1232
1733 #define TWEI_SKEWWINDOWX3           0x1233
1734 #define TWEI_SKEWWINDOWY3           0x1234
1735 #define TWEI_SKEWWINDOWX4           0x1235
1736 #define TWEI_SKEWWINDOWY4           0x1236
1737 #define TWEI_BOOKNAME               0x1238  /* added 1.9 */
1738 #define TWEI_CHAPTERNUMBER          0x1239  /* added 1.9 */
1739 #define TWEI_DOCUMENTNUMBER         0x123A  /* added 1.9 */
1740 #define TWEI_PAGENUMBER             0x123B  /* added 1.9 */
1741 #define TWEI_CAMERA           	    0x123C  /* added 1.9 */
1742 #define TWEI_FRAMENUMBER            0x123D  /* added 1.9 */
1743 #define TWEI_FRAME	            0x123E  /* added 1.9 */
1744 #define TWEI_PIXELFLAVOR            0x123F  /* added 1.9 */
1745 
1746 #define TWEJ_NONE                   0x0000
1747 #define TWEJ_MIDSEPARATOR           0x0001
1748 #define TWEJ_PATCH1                 0x0002
1749 #define TWEJ_PATCH2                 0x0003
1750 #define TWEJ_PATCH3                 0x0004
1751 #define TWEJ_PATCH4                 0x0005
1752 #define TWEJ_PATCH6                 0x0006
1753 #define TWEJ_PATCHT                 0x0007
1754 
1755 /* Added 1.8 */
1756 /* TW_PASSTHRU.Direction values */
1757 #define TWDR_GET                1
1758 #define TWDR_SET                2
1759 
1760 /***************************************************************************
1761  *            Return Codes and Condition Codes section                     *
1762  ***************************************************************************/
1763 
1764 /* Return Codes: DSM_Entry and DS_Entry may return any one of these values. */
1765 #define TWRC_CUSTOMBASE     0x8000
1766 
1767 #define TWRC_SUCCESS          0
1768 #define TWRC_FAILURE          1 /* Application may get TW_STATUS for info on failure */
1769 #define TWRC_CHECKSTATUS      2 /* "tried hard"; get status                  */
1770 #define TWRC_CANCEL           3
1771 #define TWRC_DSEVENT          4
1772 #define TWRC_NOTDSEVENT       5
1773 #define TWRC_XFERDONE         6
1774 #define TWRC_ENDOFLIST        7 /* After MSG_GETNEXT if nothing left         */
1775 #define TWRC_INFONOTSUPPORTED 8
1776 #define TWRC_DATANOTAVAILABLE 9
1777 
1778 /* Condition Codes: Application gets these by doing DG_CONTROL DAT_STATUS MSG_GET.  */
1779 #define TWCC_CUSTOMBASE         0x8000
1780 
1781 #define TWCC_SUCCESS            0 /* It worked!                                */
1782 #define TWCC_BUMMER             1 /* Failure due to unknown causes             */
1783 #define TWCC_LOWMEMORY          2 /* Not enough memory to perform operation    */
1784 #define TWCC_NODS               3 /* No Data Source                            */
1785 #define TWCC_MAXCONNECTIONS     4 /* DS is connected to max possible applications      */
1786 #define TWCC_OPERATIONERROR     5 /* DS or DSM reported error, application shouldn't   */
1787 #define TWCC_BADCAP             6 /* Unknown capability                        */
1788 #define TWCC_BADPROTOCOL        9 /* Unrecognized MSG DG DAT combination       */
1789 #define TWCC_BADVALUE           10 /* Data parameter out of range              */
1790 #define TWCC_SEQERROR           11 /* DG DAT MSG out of expected sequence      */
1791 #define TWCC_BADDEST            12 /* Unknown destination Application/Source in DSM_Entry */
1792 #define TWCC_CAPUNSUPPORTED     13 /* Capability not supported by source            */
1793 #define TWCC_CAPBADOPERATION    14 /* Operation not supported by capability         */
1794 #define TWCC_CAPSEQERROR        15 /* Capability has dependancy on other capability */
1795 /* Added 1.8 */
1796 #define TWCC_DENIED             16 /* File System operation is denied (file is protected) */
1797 #define TWCC_FILEEXISTS         17 /* Operation failed because file already exists. */
1798 #define TWCC_FILENOTFOUND       18 /* File not found */
1799 #define TWCC_NOTEMPTY           19 /* Operation failed because directory is not empty */
1800 #define TWCC_PAPERJAM           20  /* The feeder is jammed */
1801 #define TWCC_PAPERDOUBLEFEED    21  /* The feeder detected multiple pages */
1802 #define TWCC_FILEWRITEERROR     22  /* Error writing the file (meant for things like disk full conditions) */
1803 #define TWCC_CHECKDEVICEONLINE  23  /* The device went offline prior to or during this operation */
1804 
1805 
1806 /* bit patterns: for query the operation that are supported by the data source on a capability */
1807 /* Application gets these through DG_CONTROL/DAT_CAPABILITY/MSG_QUERYSUPPORT */
1808 /* Added 1.6 */
1809 #define TWQC_GET           0x0001
1810 #define TWQC_SET           0x0002
1811 #define TWQC_GETDEFAULT    0x0004
1812 #define TWQC_GETCURRENT    0x0008
1813 #define TWQC_RESET         0x0010
1814 
1815 
1816 /****************************************************************************
1817  * Entry Points                                                             *
1818  ****************************************************************************/
1819 
1820 /**********************************************************************
1821  * Function: DSM_Entry, the only entry point into the Data Source Manager.
1822  *
1823  * Parameters:
1824  *  pOrigin Identifies the source module of the message. This could
1825  *          identify an Application, a Source, or the Source Manager.
1826  *
1827  *  pDest   Identifies the destination module for the message.
1828  *          This could identify an application or a data source.
1829  *          If this is NULL, the message goes to the Source Manager.
1830  *
1831  *  DG      The Data Group.
1832  *          Example: DG_IMAGE.
1833  *
1834  *  DAT     The Data Attribute Type.
1835  *          Example: DAT_IMAGEMEMXFER.
1836  *
1837  *  MSG     The message.  Messages are interpreted by the destination module
1838  *          with respect to the Data Group and the Data Attribute Type.
1839  *          Example: MSG_GET.
1840  *
1841  *  pData   A pointer to the data structure or variable identified
1842  *          by the Data Attribute Type.
1843  *          Example: (TW_MEMREF)&ImageMemXfer
1844  *                   where ImageMemXfer is a TW_IMAGEMEMXFER structure.
1845  *
1846  * Returns:
1847  *  ReturnCode
1848  *         Example: TWRC_SUCCESS.
1849  *
1850  ********************************************************************/
1851 
1852 /* Don't mangle the name "DSM_Entry" if we're compiling in C++! */
1853 #ifdef  __cplusplus
1854 extern "C" {
1855 #endif  /* __cplusplus */
1856 
1857 #ifdef  _MSWIN_
1858 TW_UINT16 FAR PASCAL DSM_Entry( pTW_IDENTITY pOrigin,
1859                                 pTW_IDENTITY pDest,
1860                                 TW_UINT32    DG,
1861                                 TW_UINT16    DAT,
1862                                 TW_UINT16    MSG,
1863                                 TW_MEMREF    pData);
1864 
1865 typedef TW_UINT16 (FAR PASCAL *DSMENTRYPROC)(pTW_IDENTITY, pTW_IDENTITY,
1866                                              TW_UINT32,    TW_UINT16,
1867                                              TW_UINT16,    TW_MEMREF);
1868 #else   /* _MSWIN_ */
1869 
1870 FAR PASCAL TW_UINT16 DSM_Entry( pTW_IDENTITY pOrigin,
1871                                 pTW_IDENTITY pDest,
1872                                 TW_UINT32    DG,
1873                                 TW_UINT16    DAT,
1874                                 TW_UINT16    MSG,
1875                                 TW_MEMREF    pData);
1876 
1877 typedef TW_UINT16 (*DSMENTRYPROC)(pTW_IDENTITY, pTW_IDENTITY,
1878                                   TW_UINT32,    TW_UINT16,
1879                                   TW_UINT16,    TW_MEMREF);
1880 #endif  /* _MSWIN_ */
1881 
1882 #ifdef  __cplusplus
1883 }
1884 #endif  /* cplusplus */
1885 
1886 
1887 /**********************************************************************
1888  * Function: DS_Entry, the entry point provided by a Data Source.
1889  *
1890  * Parameters:
1891  *  pOrigin Identifies the source module of the message. This could
1892  *          identify an application or the Data Source Manager.
1893  *
1894  *  DG      The Data Group.
1895  *          Example: DG_IMAGE.
1896  *
1897  *  DAT     The Data Attribute Type.
1898  *          Example: DAT_IMAGEMEMXFER.
1899  *
1900  *  MSG     The message.  Messages are interpreted by the data source
1901  *          with respect to the Data Group and the Data Attribute Type.
1902  *          Example: MSG_GET.
1903  *
1904  *  pData   A pointer to the data structure or variable identified
1905  *          by the Data Attribute Type.
1906  *          Example: (TW_MEMREF)&ImageMemXfer
1907  *                   where ImageMemXfer is a TW_IMAGEMEMXFER structure.
1908  *
1909  * Returns:
1910  *  ReturnCode
1911  *          Example: TWRC_SUCCESS.
1912  *
1913  * Note:
1914  *  The DSPROC type is only used by an application when it calls
1915  *  a Data Source directly, bypassing the Data Source Manager.
1916  *
1917  ********************************************************************/
1918 /* Don't mangle the name "DS_Entry" if we're compiling in C++! */
1919 #ifdef  __cplusplus
1920 extern "C" {
1921 #endif  /* __cplusplus */
1922 
1923 #ifdef  _MSWIN_
1924   #ifdef _WIN32
1925      __declspec(dllexport) TW_UINT16 FAR PASCAL DS_Entry (pTW_IDENTITY pOrigin,
1926                                                           TW_UINT32    DG,
1927                                                           TW_UINT16    DAT,
1928                                                           TW_UINT16    MSG,
1929                                                           TW_MEMREF    pData);
1930   #else   /* _WIN32 */
1931      TW_UINT16 FAR PASCAL DS_Entry (pTW_IDENTITY pOrigin,
1932                                     TW_UINT32    DG,
1933                                     TW_UINT16    DAT,
1934                                     TW_UINT16    MSG,
1935                                     TW_MEMREF    pData);
1936   #endif  /* _WIN32 */
1937 
1938   typedef TW_UINT16 (FAR PASCAL *DSENTRYPROC) (pTW_IDENTITY pOrigin,
1939                                                TW_UINT32    DG,
1940                                                TW_UINT16    DAT,
1941                                                TW_UINT16    MSG,
1942                                                TW_MEMREF    pData);
1943 #else   /* _MSWIN_ */
1944 FAR PASCAL TW_UINT16 DS_Entry( pTW_IDENTITY pOrigin,
1945                                TW_UINT32    DG,
1946                                TW_UINT16    DAT,
1947                                TW_UINT16    MSG,
1948                                TW_MEMREF    pData);
1949 
1950 typedef TW_UINT16 (*DSENTRYPROC)(pTW_IDENTITY,
1951                                   TW_UINT32,    TW_UINT16,
1952                                   TW_UINT16,    TW_MEMREF);
1953 #endif  /* _MSWIN_ */
1954 
1955 #ifdef  __cplusplus
1956 }
1957 #endif  /* cplusplus */
1958 
1959 /*  SDH - 02/08/95 - TWUNK */
1960 /*  Force 32-bit twain to use same packing of twain structures as existing */
1961 /*  16-bit twain.  This allows 16/32-bit thunking. */
1962 #ifdef  WIN32
1963     #ifdef __MINGW32__
1964         #pragma pack (pop)
1965     #elif __BORLANDC__ //(Mentor June 13, 1996) if we're using a Borland compiler
1966         #pragma option -a.  //(Mentor October 30, 1996) switch back to original alignment
1967     #else   //(Mentor June 13, 1996) if NOT using a Borland compiler
1968         #pragma pack (pop, before_twain)
1969     #endif  //(Mentor June 13, 1996)
1970 #else   /* WIN32 */
1971 #endif  /* WIN32 */
1972 
1973 #endif  /* TWAIN */
1974