ByteScout BarCode Generator SDK – C++ – Get Barcode To Memory Buffer

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ByteScout BarCode Generator SDK – C++ – Get Barcode To Memory Buffer

printable version:
ByteScout-Barcode-SDK-C-plus-plus-Get-Barcode-To-Memory-Buffer.pdf

How to get barcode to memory buffer in C++ with ByteScout Barcode SDK

Tutorial on how to get barcode to memory buffer in C++

The documentation is designed to help you to implement the features on your side. ByteScout Barcode SDK: the robost SDK that generates high quality barcode images and pdf. Can generate all popular types of barcodes from QR Code, Code 39, Code 128, UPC, GS1, GS-128, PDF417, Datamatrix to more exotic barcode types. Fully customizable fonts, colors, print sizes. Includes special functions to ensure output quality, and tools for adding barcodes to new or existing pdf files and images. It can get barcode to memory buffer in C++.

This code snippet below for ByteScout Barcode SDK works best when you need to quickly get barcode to memory buffer in your C++ application. In order to implement the functionality, you should copy and paste this code for C++ below into your code editor with your app, compile and run your application. This basic programming language sample code for C++ will do the whole work for you to get barcode to memory buffer.

Free trial version of ByteScout Barcode SDK is available for download from our website. Get it to try other source code samples for C++.

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BarcodeGenerationExample.cpp

      #include "stdafx.h"
#include <atlsafe.h> // For ATL::CComSafeArray

#import "Bytescout.BarCode.tlb" raw_interfaces_only

using namespace Bytescout_BarCode;


int _tmain(int argc, _TCHAR* argv[])
{
	// Initialize COM.
	HRESULT hr = CoInitialize(NULL);

	// Create the interface pointer.
	IBarcodePtr pIBarcode(__uuidof(Barcode));

	// set the registration name and key
	BSTR regname = ::SysAllocString(L"DEMO");
	pIBarcode->put_RegistrationName(regname);
	::SysFreeString(regname);

	BSTR regkey = ::SysAllocString(L"DEMO");
	pIBarcode->put_RegistrationKey(regkey);
	::SysFreeString(regkey);

	// Set barcode type (symbology)
	pIBarcode->put_Symbology(SymbologyType_Code128);

	// Set barcode value
	BSTR value = ::SysAllocString(L"Abc123");
	pIBarcode->put_Value(value);
	::SysFreeString(value);

	// Get barcode image bytes.
	SAFEARRAY* pSafeArray;
	pIBarcode->GetImageBytesPNG(&pSafeArray);

	// Convert SAFEARRAY to byte array
	CComSafeArray<BYTE> safeArray;
	safeArray.Attach(pSafeArray);
	UINT count = safeArray.GetCount();
	BYTE* bytes = new BYTE[count];
	for (ULONG i = 0; i < count; i++)
		bytes[i] = safeArray.GetAt(i);

	// Check result by saving image bytes to file
	FILE* pFile;
	fopen_s(&pFile, "result.png", "wb");
	fwrite(bytes, 1, count, pFile);
	fclose(pFile);

	delete[] bytes;
	pIBarcode->Release();

	// Uninitialize COM.
	CoUninitialize();

	return 0;
}

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stdafx.cpp

      // stdafx.cpp : source file that includes just the standard includes
// BarcodeGenerationExample.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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60 Day Free Trial or Visit ByteScout Barcode SDK Home Page

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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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60 Day Free Trial or Visit ByteScout Barcode SDK Home Page

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ON-DEMAND REST WEB API

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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>