Creating multi page tiff - VC++ - GDI+

Creating multi page tiff  file using GDI+

While working  TWAIN scanning implementation we need to crate multi page tif file. Because client need bulk scanning and it should be saved into a single file. We implemented same using .Net and CXImage .First 2 days I didn’t find any solution in GDI+ with C++ and also I tried to port the existing C# code to C++. Finally I got a solution in MSDN.

//Header file #pragma once class CMyImageHelper { public:       void static Initialize();       void static UnInitialize();       //merge images       bool ConvertToTif(const CStringArray& strFilePathList,const CString& strOutPutFileName);       bool ConvertToJpg(const CString& strinputFileName,const CString& strOutPutFileName); private:       int GetEncoderClsid(const TCHAR* strFormat, CLSID* pClsid);       static ULONG_PTR m_GdiplusToken; };

//C++ file #include "StdAfx.h" #include "MyImageHelper.h" #include <gdiplus.h> using namespace Gdiplus; ULONG_PTR CMyImageHelper::m_GdiplusToken; void CMyImageHelper::Initialize() {       GdiplusStartupInput gdiplusStartupInput;       GdiplusStartup(&m_GdiplusToken, &gdiplusStartupInput, NULL); } void CMyImageHelper::UnInitialize() {       GdiplusShutdown(m_GdiplusToken); } bool CMyImageHelper::ConvertToTif(const CStringArray& strFilePathList,const CString& strOutPutFileName) {       bool bSuccess = false;       if( 0 == strFilePathList.GetCount())       {             return false;       }       CLSID tifClsid;       GetEncoderClsid(_T("image/tiff"), &tifClsid);       Bitmap* pTifImage = NULL;       EncoderParameters encoderParameters;       ULONG             parameterValue;       // An EncoderParameters object has an array of       // EncoderParameter objects. In this case, there is only       // one EncoderParameter object in the array.       encoderParameters.Count = 1;       // Initialize the one EncoderParameter object.       encoderParameters.Parameter[0].Guid = EncoderSaveFlag;       encoderParameters.Parameter[0].Type = EncoderParameterValueTypeLong;       encoderParameters.Parameter[0].NumberOfValues = 1;       encoderParameters.Parameter[0].Value = &parameterValue;       for( int nCount = 0; nCount < strFilePathList.GetCount();++nCount)       {             bSuccess = false;             const CString& strinputFileName = strFilePathList.GetAt(nCount);             if( 0 == nCount)             {                   pTifImage = Bitmap::FromFile(strinputFileName);                   if( NULL != pTifImage)                   {                         parameterValue = EncoderValueMultiFrame;                         if( Ok != pTifImage->Save(strOutPutFileName,&tifClsid,&encoderParameters))                         {                               break;                         }                   }             }             else             {                   Bitmap* pCurrentImage = Bitmap::FromFile(strinputFileName);                   if( NULL != pCurrentImage)                   {                         parameterValue = EncoderValueFrameDimensionPage;                         Status status = pTifImage->SaveAdd(pCurrentImage,&encoderParameters);                         delete pCurrentImage;                         if( Ok != status)                         {                                   break;                         }                   }             }             bSuccess = true;       }       if( true == bSuccess)       {             if( NULL != pTifImage)             {                   parameterValue = EncoderValueFlush;                   if( Ok != pTifImage->SaveAdd(&encoderParameters))                   {                         bSuccess = false;                   }             }       }       delete pTifImage;       return bSuccess; } bool CMyImageHelper::ConvertToJpg(const CString& strinputFileName,const CString& strOutPutFileName) {       bool bSuccess = false;       Bitmap* pImage = Bitmap::FromFile(strinputFileName);       if( NULL != pImage)       {             CLSID jpgClsid;             GetEncoderClsid(_T("image/jpeg"), &jpgClsid);             if( Ok == pImage->Save(strOutPutFileName,&jpgClsid))             {                   bSuccess = true;             }             delete pImage;       }       return bSuccess; } int CMyImageHelper::GetEncoderClsid(const WCHAR* strFormat, CLSID* pClsid) {       UINT nImagEncoderTotalCount = 0; // number of image encoders       UINT nImageEncodersSize = 0; // size of the image encoder array       // in bytes       ImageCodecInfo* pImageCodecInfo = NULL;       GetImageEncodersSize(&nImagEncoderTotalCount, &nImageEncodersSize);       if(nImageEncodersSize == 0)             return -1;       pImageCodecInfo = (ImageCodecInfo*)(malloc(nImageEncodersSize));       if(pImageCodecInfo == NULL)             return -1;       GetImageEncoders(nImagEncoderTotalCount, nImageEncodersSize, pImageCodecInfo);       for(UINT nImagEncoderIndex = 0; nImagEncoderIndex < nImagEncoderTotalCount; ++nImagEncoderIndex)    {             if( wcscmp(pImageCodecInfo[nImagEncoderIndex].MimeType, strFormat) == 0 )             {                   *pClsid = pImageCodecInfo[nImagEncoderIndex].Clsid;                   free(pImageCodecInfo);                   return nImagEncoderIndex; // Success             }       }       free(pImageCodecInfo);       return -1; }

//Usage #include "MyImageHelper.h" int _tmain(int argc, _TCHAR* argv[]) {       CMyImageHelper::Initialize();//For MFC app call it on CWinApp::InitInstance()       CStringArray imageArray;       imageArray.Add(_T("C:\\Image1.BMP"));       imageArray.Add(_T("C:\\Image2.jpg"));       imageArray.Add(_T("C:\\Image3.bmp"));       CMyImageHelper imageHelper;       imageHelper.ConvertToTif(imageArray,_T("C:\\OutImage.Tif"));       CMyImageHelper::UnInitialize();//For MFC app call it on CWinApp::ExitInstance() }