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

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

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ByteScout-Barcode-Suite-C-plus-plus-Read-barcode-from-memory-with-barcode-reader-sdk.pdf

How to read barcode from memory with barcode reader sdk in C++ using ByteScout Barcode Suite

If you want to learn more then this tutorial will show how to read barcode from memory with barcode reader sdk in C++

These source code samples are assembled by their programming language and functions they apply. ByteScout Barcode Suite is the bundle that privides 3 SDK products to generate barcodes (Barcode SDK), read barcodes (Barcode Reaer SDK) and read and write spreadsheets (Spreadsheet SDK). It can be applied to read barcode from memory with barcode reader sdk using C++.

This prolific sample source code in C++ for ByteScout Barcode Suite contains various functions and other necessary options you should do calling the API to read barcode from memory with barcode reader sdk. Simply copy and paste in your C++ project or application you and then run your app! This basic programming language sample code for C++ will do the whole work for you to read barcode from memory with barcode reader sdk.

ByteScout provides the free trial version of ByteScout Barcode Suite along with the documentation and source code samples.

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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>