ByteScout Data Extraction Suite - C++ - Read barcode from memory with barcode reader sdk - ByteScout

ByteScout Data Extraction Suite – C++ – Read barcode from memory with barcode reader sdk

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How to read barcode from memory with barcode reader sdk in C++ and ByteScout Data Extraction Suite

Learn to read barcode from memory with barcode reader sdk in C++

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++.

The trial version of ByteScout Data Extraction Suite can be downloaded for free from our website. It also includes source code samples for C++ and other programming languages.

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ReadFromMemory.cpp
      
// 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
      
// 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
      
// 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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targetver.h
      
#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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