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An easy to understand sample source code to learn how to read barcode from memory with barcode reader sdk in C++ ByteScout Data Extraction Suite is the set that includes 3 SDK products for data extraction from PDF, scans, images and from spreadsheets: PDF Extractor SDK, Data Extraction SDK, Barcode Reader SDK and you can use it to read barcode from memory with barcode reader sdk with C++.
These C++ code samples for C++ guide developers to speed up coding of the application when using ByteScout Data Extraction Suite. IF you want to implement the functionality, just copy and paste this code for C++ below into your code editor with your app, compile and run your application. Enjoy writing a code with ready-to-use sample codes in C++.
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// ReadFromMemory.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include "atlbase.h"
#import "c:\\Program Files\\Bytescout BarCode Reader SDK\\net4.00\\Bytescout.BarCodeReader.tlb" raw_interfaces_only
using namespace Bytescout_BarCodeReader;
int _tmain(int argc, _TCHAR* argv[])
{
// Initialize COM.
HRESULT hr = CoInitialize(NULL);
// Create the interface pointer.
IReaderPtr pIReader(__uuidof(Reader));
// set the registration name and key
BSTR regname = ::SysAllocString(L"DEMO");
pIReader->put_RegistrationName(regname);
SysFreeString(regname);
BSTR regkey = ::SysAllocString(L"DEMO");
pIReader->put_RegistrationKey(regkey);
SysFreeString(regkey);
// Set barcode type to find
_BarcodeTypeSelectorPtr pBarcodeTypesToFind;
pIReader->get_BarcodeTypesToFind(&pBarcodeTypesToFind);
pBarcodeTypesToFind->put_GS1DataBarExpanded(VARIANT_TRUE);
// Get full path of sample barcode image file
WCHAR file[MAX_PATH];
::GetFullPathName(L"GS1DataBarExpanded.png", MAX_PATH, file, NULL);
// Load file content to byte array (for demonstration purpose)
HANDLE hFile = CreateFile(file, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
DWORD fileSize = GetFileSize(hFile, NULL);
byte* pBuffer = new byte[fileSize];
DWORD numberOfBytesRead;
ReadFile(hFile, pBuffer, fileSize, &numberOfBytesRead, NULL);
CloseHandle(hFile);
// Read barcode from memory
IStream* stream = SHCreateMemStream(pBuffer, fileSize);
hr = pIReader->ReadFromStream(stream);
stream->Release();
delete[] pBuffer;
// Get found barcode count
long count;
pIReader->get_FoundCount(&count);
// Get found barcode information
for (int i = 0; i < count; i++)
{
SymbologyType type;
hr = pIReader->GetFoundBarcodeType(i, &type);
wprintf(L"Barcode type: %d\n", type);
float confidence;
hr = pIReader->GetFoundBarcodeConfidence(i, &confidence);
wprintf(L"Barcode confidence: %f\n", confidence);
BSTR bstrValue;
hr = pIReader->GetFoundBarcodeValue(i, &bstrValue);
wprintf(L"Barcode value: %s\n", bstrValue);
::SysFreeString(bstrValue);
wprintf(L"\n");
}
if (count == 0)
{
wprintf(L"no barcodes found");
}
// Uninitialize COM.
CoUninitialize();
wprintf(L"\nHit key to continue\n");
getchar();
return 0;
}
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// stdafx.cpp : source file that includes just the standard includes
// ReadFromMemory.pch will be the pre-compiled header
// stdafx.obj will contain the pre-compiled type information
#include "stdafx.h"
// TODO: reference any additional headers you need in STDAFX.H
// and not in this file
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// stdafx.h : include file for standard system include files,
// or project specific include files that are used frequently, but
// are changed infrequently
//
#pragma once
#include "targetver.h"
#include <stdio.h>
#include <tchar.h>
// TODO: reference additional headers your program requires here
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#pragma once
// Including SDKDDKVer.h defines the highest available Windows platform.
// If you wish to build your application for a previous Windows platform, include WinSDKVer.h and
// set the _WIN32_WINNT macro to the platform you wish to support before including SDKDDKVer.h.
#include <SDKDDKVer.h>
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60 Day Free Trial or Visit ByteScout Data Extraction Suite Home Page
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