Creo que contiene caracteres hasta 10000 que luego se pasan como parametros a otra funcion que los convierte en bitmap en la variable handle.
Hay muchos ejemplos de uso en varios lenguajes de programación C#, C++.NET, Delphi, Java, Visual Basic, VB.Net y Visual FoxPro 8, pero no se como adaptar las llamadas a Harbour.
Saludos
GrCapRawImageToHandle(unsigned char* rawImage, unsigned int width, unsigned int height, HDC hdc, HBITMAP &handle);
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/******************************************************
* *
* GrFinger 4.2 SDK *
* GrFinger Biometric Fingerprint Library *
* *
* GrFinger.h *
* C++ Header file for GrFinger Library *
* *
* Copyright (c) 2004-2006 Griaule Tecnologia LTDA. *
* *
* Last Modified: 2006-05-23 Revision: 3 *
* *
******************************************************/
#ifndef IMPORTDLL_H
#define IMPORTDLL_H
#include "windows.h"
//*****************************************************
//RETURN CODES
//*****************************************************
//success
#define GR_OK 0
#define GR_BAD_QUALITY 0
#define GR_MEDIUM_QUALITY 1
#define GR_HIGH_QUALITY 2
#define GR_MATCH 1
#define GR_NOT_MATCH 0
#define GR_DEFAULT_USED 3
//initialization errors codes
#define GR_ERROR_INITIALIZE_FAIL -1
#define GR_ERROR_NOT_INITIALIZED -2
#define GR_ERROR_FAIL_LICENSE_READ -3
#define GR_ERROR_NO_VALID_LICENSE -4
#define GR_ERROR_NULL_ARGUMENT -5
#define GR_ERROR_FAIL -6
#define GR_ERROR_ALLOC -7
#define GR_ERROR_PARAMETERS -8
//extract and match errors codes
#define GR_ERROR_WRONG_USE -107
#define GR_ERROR_EXTRACT -108
#define GR_ERROR_SIZE_OFF_RANGE -109
#define GR_ERROR_RES_OFF_RANGE -110
#define GR_ERROR_CONTEXT_NOT_CREATED -111
#define GR_ERROR_INVALID_CONTEXT -112
#define GR_ERROR_ERROR -113
#define GR_ERROR_NOT_ENOUGH_SPACE -114
//capture error codes
#define GR_ERROR_CONNECT_SENSOR -201
#define GR_ERROR_CAPTURING -202
#define GR_ERROR_CANCEL_CAPTURING -203
#define GR_ERROR_INVALID_ID_SENSOR -204
#define GR_ERROR_SENSOR_NOT_CAPTURING -205
#define GR_ERROR_INVALID_EXT -206
#define GR_ERROR_INVALID_FILENAME -207
#define GR_ERROR_INVALID_FILETYPE -208
#define GR_ERROR_SENSOR -209
//*****************************************************
//CONSTS
//*****************************************************
//file format codes
#define GRCAP_IMAGE_FORMAT_BMP 501
//event values codes
#define GR_PLUG 21
#define GR_UNPLUG 20
#define GR_FINGER_DOWN 11
#define GR_FINGER_UP 10
#define GR_IMAGE 30
//image consts
#define GR_DEFAULT_RES 500
#define GR_DEFAULT_DIM 500
#define GR_MAX_SIZE_TEMPLATE 10000
#define GR_MAX_IMAGE_WIDTH 1280
#define GR_MAX_IMAGE_HEIGHT 1280
#define GR_MAX_RESOLUTION 1000 /*DPI*/
#define GR_MIN_IMAGE_WIDTH 50
#define GR_MIN_IMAGE_HEIGHT 50
#define GR_MIN_RESOLUTION 125 /*DPI*/
//match const
#define GR_MAX_THRESHOLD 200
#define GR_MIN_THRESHOLD 10
#define GR_VERYLOW_FRR 30 /*FAR 1 IN 1000*/
#define GR_LOW_FRR 45 /*FAR 1 IN 10000*/
#define GR_LOW_FAR 60 /*FAR 1 IN 30000*/
#define GR_VERYLOW_FAR 80 /*FAR 1 IN 300000*/
#define GR_ROT_MIN 0
#define GR_ROT_MAX 180
//context const
#define GR_DEFAULT_CONTEXT 0
#define GR_NO_CONTEXT -1
//colors for BiometricDisplay
#define GR_IMAGE_NO_COLOR 0x1FFFFFFF
//version constants
#define GRFINGER_FULL 1
#define GRFINGER_LIGHT 2
#define GRFINGER_FREE 3
//*****************************************************
//TYPE DEFINITIONS
//*****************************************************
#define DLLIMPORT extern "C" __declspec(dllimport) int __stdcall
#define CALLBACK __stdcall
typedef int GRCAP_STATUS_EVENTS;
typedef int GRCAP_FINGER_EVENTS;
typedef int GRCAP_IMAGE_FORMAT;
typedef long BITMAP_HANDLE;
//CALLBACK functions
typedef void CALLBACK GRCAP_STATUS_EVENT_PROC(char* idSensor, GRCAP_STATUS_EVENTS event);
typedef void CALLBACK GRCAP_FINGER_EVENT_PROC(char* idSensor, GRCAP_FINGER_EVENTS event);
typedef void CALLBACK GRCAP_IMAGE_EVENT_PROC(char* idSensor, unsigned int width, unsigned int height, unsigned char* rawImage, int res);
//*****************************************************
// Functions - CAPTURE
//*****************************************************
DLLIMPORT
GrCapInitialize(GRCAP_STATUS_EVENT_PROC *StatusEventHandler);
DLLIMPORT
GrCapFinalize();
DLLIMPORT
GrCapStartCapture(char* idSensor, GRCAP_FINGER_EVENT_PROC *FingerEventHandler, GRCAP_IMAGE_EVENT_PROC *ImageEventHandler);
DLLIMPORT
GrCapStopCapture(char* idSensor);
DLLIMPORT
GrCapSaveRawImageToFile(unsigned char* rawImage, unsigned int width, unsigned int height, char* fileName, GRCAP_IMAGE_FORMAT imageFormat);
DLLIMPORT
GrCapLoadImageFromFile(char* fileName, int res);
DLLIMPORT
GrCapRawImageToHandle(unsigned char* rawImage, unsigned int width, unsigned int height, HDC hdc, HBITMAP &handle);
DLLIMPORT
GrBiometricDisplay(char* tptQuery, unsigned char* rawImage, int width, int height, int res, HDC hdc, HBITMAP &handle, int matchContext);
//*****************************************************
// Functions - EXTRACT
//*****************************************************
DLLIMPORT
GrExtract(unsigned char *rawimage, int width, int height, int res, char *tpt, int *tptSize, int context);
//*****************************************************
// Functions - MATCH
//*****************************************************
DLLIMPORT
GrInitialize();
DLLIMPORT
GrFinalize();
DLLIMPORT
GrCreateContext (int *contextId);
DLLIMPORT
GrDestroyContext (int contextId);
DLLIMPORT
GrVerify (char *queryTemplate, char *referenceTemplate, int *verifyScore, int context);
DLLIMPORT
GrIdentifyPrepare (char *templateQuery, int context);
DLLIMPORT
GrIdentify (char *templateReference, int *identifyScore, int context);
//*****************************************************
// Functions - CONFIG
//*****************************************************
DLLIMPORT
GrSetIdentifyParameters (int identifyThreshold, int identifyRotationTolerance, int context);
DLLIMPORT
GrSetVerifyParameters (int verifyThreshold, int verifyRotationTolerance, int context);
DLLIMPORT
GrGetIdentifyParameters(int &identifyThreshold, int &identifyRotationTolerance, int context);
DLLIMPORT
GrGetVerifyParameters(int &verifyThreshold, int &verifyRotationTolerance, int context);
DLLIMPORT
GrSetBiometricDisplayColors(int minutiaeColor, int minutiaeMatchedColor, int segmentColor, int segmentMatchedColor, int directionColor, int directionMatchedColor);
DLLIMPORT
GrGetGrFingerVersion(unsigned char *majorRelease, unsigned char *minorRelease);
#endif
Yo la verdad estoy confundido, pero ya ando viendo otros SDK mientras tanto.