Working with Recognition Results Using LEADTOOLS OCR Module - OmniPage Engine

To add code to an existing project in order to work with recognition results:

1. Start with the program you created in Recognize Pages.

2. Define the following global IDs in Ezfunc.h in the OCR_Ltdoc2 directory:

   #define IDM_GET_OUTPUTFORMAT        207 
   #define IDM_SAVE_RESULTS            208 

3. Edit EZFUNC.RC file in the OCR_Ltdoc2 directory and add the following lines:

   MAIN_MENU   MENU 
   BEGIN 
      ... 
      ... 
      MENUITEM "Get Output Formats"    IDM_GET_OUTPUTFORMAT 
      MENUITEM "Save Results"          IDM_SAVE_RESULTS 
   END 

4. In the MainWndProc procedure, add the following code to the switch statement for WM_COMMAND:

   case IDM_GET_OUTPUTFORMAT: 
   { 
      nRet = L_Doc2EnumOutputFileFormats(hDoc, EnumOutputFileFormatsCB, NULL); 
      if (nRet != SUCCESS) 
      { 
         wsprintf (achBuff, TEXT("Error %d enumerating available file formats"), nRet); 
         MessageBox (NULL, achBuff, TEXT("Error"), MB_OK); 
      } 
   } 
   break; 
    
   case IDM_SAVE_RESULTS: 
   { 
      RESULTOPTIONS2 ResOpts; 
      memset(&ResOpts, 0, sizeof(RESULTOPTIONS2)); 
      nRet = L_Doc2GetRecognitionResultOptions(hDoc, &ResOpts, sizeof(RESULTOPTIONS2)); 
      if (nRet == SUCCESS) 
      { 
         ResOpts.Format = DOC2_WORD_2000; 
         ResOpts.FormatLevel = DOC2_FORMAT_LEVEL_AUTO; 
         L_Doc2SetRecognitionResultOptions(hDoc, &ResOpts); 
         nRet = L_Doc2SaveResultsToFile (hDoc, TEXT("c:\\test.doc")); 
         if (nRet != SUCCESS) 
         { 
            wsprintf (achBuff, TEXT("Error %d in saving recognition results to a file"), nRet); 
            MessageBox (NULL, achBuff, TEXT("Error"), MB_OK); 
         } 
      } 
   } 
   break; 

5. Add the following function at the end of the code in EZFUNC.CPP in OCR_Ltdoc2 directory.

   L_INT EXT_CALLBACK EnumOutputFileFormatsCB(DOC2_FORMATTYPE Format, L_VOID * pUserData) 
   { 
      UNREFERENCED_PARAMETER(pUserData); 
      TEXTFORMATINFO2 FormatInfo; 
      L_INT nRet; 
      L_TCHAR szBuffer[1024]; 
      memset(&FormatInfo, 0, sizeof(TEXTFORMATINFO2)); 
      nRet = L_Doc2GetTextFormatInfo(hDoc, Format, &FormatInfo, sizeof(TEXTFORMATINFO2)); 
      if (nRet == SUCCESS) 
      { 
         wsprintf(szBuffer, TEXT("Format Name = %s\nFormat DLL Name = %s\nFormat Ext Name = %s\n"), 
         (FormatInfo.pszName) ? FormatInfo.pszName : TEXT(" "), 
         (FormatInfo.pszDLLName) ? FormatInfo.pszDLLName : TEXT(" "), 
         (FormatInfo.pszExtName) ? FormatInfo.pszExtName : TEXT(" ")); 
         MessageBox(NULL, szBuffer, TEXT("Format Info"), MB_OK); 
         if (FormatInfo.pszName) 
            GlobalFreePtr(FormatInfo.pszName); 
    
         if (FormatInfo.pszDLLName) 
            GlobalFreePtr(FormatInfo.pszDLLName); 
    
         if (FormatInfo.pszExtName) 
            GlobalFreePtr(FormatInfo.pszExtName); 
      } 
    
      return SUCCESS; 
   } 

6. Also, add the following statement before the MainWndProc function.

   L_INT EXT_CALLBACK EnumOutputFileFormatsCB(DOC2_FORMATTYPE Format, L_VOID * pUserData); 

7. Build SimpleLoad.exe.

8. Run SimpleLoad.exe.