L_DocUpdatePage

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#include "ltdoc.h"

L_LTDOC_API L_INT L_DocUpdatePage(hDoc, pBitmap, nPageIndex)

L_HDOC hDoc;	/* handle to the OCR document */
pBITMAPHANDLE pBitmap;	/* pointer to the bitmap handle*/
L_INT nPageIndex;	/* page position */

Updates the current page with a new bitmap.

Parameter	Description
hDoc	Handle to the OCR document.
pBitmap	Pointer to the bitmap handle that references the new page to be updated into the internal OCR list of pages.
nPageIndex	Index of the page to be updated. This is a zero-based index.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

Use this function to update a pages content after applying any image processing function(s).

For Example, if you flip your page using L_FlipBitmap, then you should update the OCR page by calling this function.

You must lock the page to be updated by calling L_DocLockPage before calling this function, and should unlock the page by calling L_DocUnlockPage after the update is complete.

Required DLLs and Libraries

LTDOC

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

See Also

Functions:	L_DocAddPage, L_DocGetPageCount, L_DocRemovePage, L_DocExportPage, L_DocGetPageInfo, L_DocLockPage, L_DocUnlockPage, L_DocCleanupPages
Topics:	OCR Functions: Pages
	Working with Pages

Example

 L_INT DocUpdatePageExample(L_HDOC hDoc, L_INT nPageIndex, pBITMAPHANDLE pBitmap)
{
   L_INT nRet;
   nRet = L_DocLockPage (hDoc, nPageIndex);
   if(nRet != SUCCESS)
      return nRet;
   nRet = L_DocUpdatePage(hDoc, pBitmap, nPageIndex);
   if (nRet != SUCCESS)
   {
      MessageBox(NULL, TEXT("An error occurred during L_DocUpdatePage."), TEXT("Error!"), MB_OK);
      return nRet;
   }
   else
      MessageBox(NULL, TEXT("The specified page is updated."), TEXT("Notice!"), MB_OK);
   nRet = L_DocUnlockPage (hDoc, nPageIndex);
   if(nRet != SUCCESS)
      return nRet;
   return SUCCESS;
}