Recognize Pages Using OCR Professional

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To add code to an existing project in order to recognize pages:

1.	Start with the program you created in Working with Zones.
2.	Define the following global IDs in Ezfunc.h in the OCR_Ltdoc2 directory:

#define IDM_RECOGNIZE 205
#define IDM_GET_STATUS 206

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

MAIN_MENU   MENU
BEGIN
   ...
   ...
   MENUITEM "Recognize Page"        IDM_RECOGNIZE
   MENUITEM "Engine Status"         IDM_GET_STATUS
END

4.	In Ezfunc.cpp in the MainWndProc procedure, add the following code to the switch statement (switch(LOWORD(wParam)))for WM_COMMAND:

case IDM_RECOGNIZE:
{

RECOGNIZEOPTS2 RecogOpts;
memset(&RecogOpts, 0, sizeof(RECOGNIZEOPTS2));
RecogOpts.uStructSize = sizeof(RECOGNIZEOPTS2);
RecogOpts.nPageIndexStart = 0;
RecogOpts.nPagesCount = 1;
RecogOpts.SpellLangId = DOC2_LANG_ID_ENGLISH;
RecogOpts.bEnableSubSystem = TRUE;
RecogOpts.bEnableCorrection = TRUE;
nRet = L_Doc2Recognize(hDoc, &RecogOpts, RecognizeStatusCB, NULL);
if (nRet == SUCCESS)
   MessageBox(NULL, TEXT("The engine finished recognizing the specified pages successfully."), TEXT("Notice"), MB_OK);
else
{
   wsprintf (achBuff, TEXT("Error %d in recognized pages"), nRet);
               MessageBox (NULL, achBuff, TEXT("Error"), MB_OK);
            }
         }
         break;
      case IDM_GET_STATUS:
         {
            STATUS2 Status;
            memset(&Status, 0, sizeof(STATUS2));

            nRet = L_Doc2GetStatus(hDoc, &Status, sizeof(STATUS2));
            if (nRet == SUCCESS)
            {
               wsprintf(achBuff, TEXT("Recognition Time = %d\nTotal Recognized Characters = %d\nTotal Recognized Words = %d\nTotal Rejected Characters = %d\n "),
                        Status.lRecogTime,
                        Status.nRecogChrCount,
                        Status.nRecogWordCount,
                        Status.nRejectChrCount);
               MessageBox(NULL, achBuff, TEXT("Status..."), MB_OK);
            }
         }
         break;

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

L_INT EXT_CALLBACK RecognizeStatusCB(L_INT nRecogPage, L_INT nError, L_VOID * pUserData)
{
   UNREFERENCED_PARAMETER(pUserData);

   L_TCHAR szBuffer[1024];

   wsprintf(szBuffer, TEXT("Page # %d has finished recognition.\nThe recognition return code = %d\n"), nRecogPage, nError);
   MessageBox(NULL, szBuffer, TEXT("Recognition Status"), MB_OK);
   return SUCCESS; // continue to recognize next page
}

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

L_INT EXT_CALLBACK RecognizeStatusCB(L_INT nRecogPage, L_INT nError, L_VOID * pUserData);

7.	Build SimpleLoad.exe.
8.	Run SimpleLoad.exe.