Scanner

[jnavas]

Colegas
Necesito una clase para scanear documentos y almacenarlos en un BD
Creo que existe una clase TSCANNER, agradezco si algún colega puede enviarmela a jnavas@adaptapro.com (sólo si es libre de uso)

[George]

Juan existe una clase excelente que uso en uno de mis programas y funciona de maravilla

ProcName......: Scanner.prg
Pourpose......: TWAIN standard device Class interface
Date..........: 05-11-96
Author........: (c),L.Gadaleta

Saludos


George

[cristian caballero]

Hola George,
Podrias ayudarme con la clase Scanner de la que habla tengo los mismos requerimientos de juan, agradezco si puedes enviarmela mi correo es caballero_cristian2004@yahoo.es.

Cordial saludo,

Cristian
Colombia

Juan existe una clase excelente que uso en uno de mis programas y funciona de maravilla

ProcName......: Scanner.prg
Pourpose......: TWAIN standard device Class interface
Date..........: 05-11-96
Author........: (c),L.Gadaleta

Saludos


George

[Rafael Clemente]

George: Lo mismo para mi, por favor. Mi dirección: rclemente@ya.com
Gracias
Rafael

[Antonio Linares]

Alguien puede publicarla aqui como una dirección de www.hyperupload.com ? Gracias

[George]

Esta es la clase Scanner.prg


/*------------------------------------------------------------------------*
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Ûݳ ³
Ûݳ ProcName......: Scanner.prg ³
Ûݳ Pourpose......: TWAIN standard device Class interface ³
Ûݳ Date..........: 05-11-96 ³
Ûݳ Author........: (c),L.Gadaleta ³
Ûݳ Compile.......: Clipper Scanner /n/w/dSTAND_ALONE ³
Ûݳ In you proc...: Clipper Scanner /n/w ³
Ûݳ Link..........: Blinker Fi Scanner @Fivewin.lnk Bli inc off ³
Ûݳ ³
ÛÝÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
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*------------------------------------------------------------------------*/
#include "FiveWin.ch"

//#define TWAIN_DLL "DMTwain.dll"

#define TWAIN_DLL "EZTW32.DLL" // For [x]Harbour

STATIC oWnd

#ifdef STAND_ALONE
FUNCTION Main(cFileRes)
/*
cFileRes = "C:\PATH\FILENAME.BMP , 150"
.OR.
cFileRes = "C:\PATH\FILENAME.BMP" // Dpi Will be 100 (default value)
*/
LOCAL cFile, nRes, n
cFile := cFileRes
nRes := 100
if !cFileRes == NIL
if ( n:=AT(",",cFileRes) ) > 0
cFile := Alltrim(Substr(cFileRes,1,n-1))
nRes := Val(Alltrim(Substr(cFileRes,n+1)))
end
end
DEFINE WINDOW oWnd FROM 1,1 TO 1,1
ACTIVATE WINDOW oWnd ON INIT (oWnd:Hide(),RunScan(cFile,oWnd:hWnd,nRes))
RETU NIL

STATIC FUNCTION RunScan(cFile,hWnd,nRes)
LOCAL oScanner := Scanner():New(hWnd)
DEFAULT nRes := 100 // Scanner resolution in Dpi
oScanner:Set(.F.) // Set User Interface Off
oScanner:DigiToFile(cFile,nRes) // Acquires
oScanner:End()
oWnd:End()
RETU NIL
#endif

CLASS Scanner
DATA hWnd AS NUMERIC // Handle of the window
DATA hDll AS NUMERIC // Handle of the DLL
DATA lLoad AS LOGICAL // .T. DLL & Driver Loaded
DATA hDib AS NUMERIC // Current Dib handle
*
METHOD New() CONSTRUCTOR
METHOD End()
METHOD Set() // Acquiring Dialog ON/OFF
METHOD Choose() // Select Image Device Source
METHOD DigiToFile() // Acquire Image and save to a file
METHOD DigiToClip() // Acquire Image and copy to ClipBoard
METHOD SetResolution() // Set Dpi for the scanner
*
PROTECTED :
METHOD Free() // Release Dib's handle
METHOD IsActive() // Twain Driver Loaded
METHOD Register() // Register my application into Twain application
METHOD DibToFile() // Write to file Dib's handle in BMP format
END CLASS

METHOD New(hWnd)
// Constructor
::hWnd := iif( ValType( hWnd ) == "N" , hWnd , 0 )
::lLoad := .T.
::hDLL := LoadLibrary( TWAIN_DLL )
::hDib := 0
if ::hDll <= 21
::lLoad := .F.
MsgAlert( BuildError(::hDll) , TWAIN_DLL )
RETU Self
end
if ( ::lLoad := ::IsActive() )
::Register()
end
RETU Self

METHOD End()
// Destructor
if ::hDib != 0
::Free( ::hDib )
end
FreeLibrary( ::hDll )
RETU NIL

METHOD DigiToFile( cFile , nRes )
// Acquire Document & save to file
LOCAL nPixType := 0
LOCAL cFarProc
DEFAULT nRes := 100
::SetResolution( nRes )

if ::lLoad
cFarProc := GetProcAddress( ::hDLL, "TWAIN_AcquireNative",.T., WORD,WORD,_INT )
::hDib := CallDLL( cFarProc,::hWnd,nPixType )
if ::hDib == 0
MsgInfo("Errore durante l'acquisizione dell'immagine","")
else
::DibToFile(::hDib,cFile)
::Free( ::hDib )
end
end
RETU Self

METHOD DigiToClip()
// Acquire document & copy to ClipBoard
LOCAL nPixType := 0
LOCAL cFarProc
LOCAL nResult
if ::lLoad
cFarProc := GetProcAddress( ::hDLL, "TWAIN_AcquireToClipBoard",.T., _INT,WORD,_INT )
nResult := CallDLL( cFarProc,::hWnd,nPixType )
end
RETU Self

METHOD SetResolution( nDpi )
// NEW
LOCAL cFarProc
LOCAL uResult
DEFAULT nDpi := 100
if ::lLoad
cFarProc := GetProcAddress( ::hDLL, "TWAIN_SetResolution",.T., VOID,_DOUBLE )
uResult := CallDLL( cFarProc,nDpi )
end
RETU Self

METHOD Set(lShow)
// Show-Hide Scanner's Dialog Box
LOCAL nHide := 0 // Default: Shows Scanner's Dialog Box
LOCAL cFarProc
LOCAL uResult
DEFAULT lShow := .T.
if ::lLoad
nHide := iif(lShow,0,1)
cFarProc := GetProcAddress( ::hDLL, "TWAIN_SetHideUI",.T., VOID,_INT )
uResult := CallDLL( cFarProc,nHide )
end
RETU Self

METHOD Choose()
// Select Image Device Source
LOCAL cFarProc
LOCAL nResult
if ::lLoad
cFarProc := GetProcAddress( ::hDLL, "TWAIN_SelectImageSource",.T., _INT,WORD )
nResult := CallDLL( cFarProc,::hWnd )
end
RETU Self

//---------- Protected Methods

METHOD Free(hDib)
// Release Dib's Handle
LOCAL cFarProc
LOCAL uResult
cFarProc := GetProcAddress( ::hDLL, "TWAIN_FreeNative",.T., VOID,WORD )
uResult := CallDLL( cFarProc,hDib )
RETU NIL

METHOD DibToFile(hDib,cFile)
// Write to File From DIB's handle
LOCAL cFarProc
LOCAL nResult
LOCAL lRet
cFarProc := GetProcAddress( ::hDLL, "TWAIN_WriteNativeToFilename",.T., _INT,WORD,LPSTR)
lRet := ( (nResult:=CallDLL( cFarProc,hDib,cFile ))==0 )
DO CASE
CASE nResult == -1
MsgInfo("Annullato dall'utente","File non registrato")
CASE nResult == -2
MsgInfo("Errore durante la scrittura sul file "+cFile,"File non registrato")
CASE nResult == -3
MsgInfo("Errore interno sul file DIB","File non registrato")
CASE nResult == -4
MsgInfo("Errore durante la scrittura sul file "+cFile+", probabile spazio insufficiente sul disco !","File non registrato")
ENDCASE
RETU lRet

METHOD IsActive()
// Is Twain driver loaded ?
LOCAL cFarProc
LOCAL nResult
cFarProc := GetProcAddress( ::hDLL, "TWAIN_IsAvailable",.T., _INT )
if ! (nResult := CallDLL( cFarProc )) == 1
MsgAlert("Nessun driver per apparecchi TWAIN compatibili risulta disponibile !","Errore hardware")
// Messaggio inviato direttamente da TWAIN.DLL
end
RETU iif(nResult==1,.T.,.F.)

METHOD Register()
// Register my application into Twain application
LOCAL nMaiorNum := 1
LOCAL nMinorNum := 0 // Result -> 1.0
LOCAL nLanguage := 0
LOCAL nCountry := 0
LOCAL cVersion := "1.0"
LOCAL cManifact := "The Genius"
LOCAL cFamily := "Digitizer"
LOCAL cProduct := StrTran(cFileName(GetModuleFileName(GetInstance())),".EXE","")
LOCAL cFarProc
LOCAL uResult
cFarProc := GetProcAddress( ::hDLL, "TWAIN_RegisterApp",.T.,;
VOID,_INT,_INT,_INT,_INT,LPSTR,LPSTR,LPSTR,LPSTR )
uResult := CallDLL( cFarProc,nMaiorNum,nMinorNum,nLanguage,nCountry,cVersion,cManifact,cFamily,cProduct )
RETU NIL

//---------- END Protected Methods

STATIC FUNCTION BuildError(nError)
LOCAL cRet := "Errore nella libreria dinamica"
DO CASE
CASE nError == 0
cRet := "Memoria insufficiente ad eseguire il programma"
CASE nError == 2
cRet := "File non trovato"
CASE nError == 3
cRet := "Percorso non trovato"
CASE nError == 5
cRet := "Tentantivo di collegarsi dinamicamente ad un task o errore di condivisione"
CASE nError == 6
cRet := "La libreria richiede un segemento separato per ogni task"
CASE nError == 8
cRet := "Memoria insufficiente ad avviare l'applicazione"
CASE nError == 10
cRet := "Versione di MS Windows non corretta"
CASE nError == 11
cRet := "Libreria non valida oppure non Š un'applicazione MS Windows"
CASE nError == 12
cRet := "Applicazione disegnata per un sistema operativo diverso"
CASE nError == 13
cRet := "Applicazione disegnata per MS-DOS 4.0"
CASE nError == 14
cRet := "Tipo di file eseguibile sconosciuto"
CASE nError == 15
cRet := "Tentativo di caricare un'applicazione disegnata per funzionare in modalit… reale"
CASE nError == 16
cRet := "Tentativo di caricare una seconda istanza dell'applicazione contenente segmenti di dati multipli non marcati per la sola lettura"
ENDCASE
RETU OemToAnsi( cRet + "!" )