#include "ltdoc2.h"
L_LTDOC2_API L_INT L_Doc2UpdatePageExt(hDoc, nDocId, pBitmap, nPageIndex)
Updates the current page with a new bitmap.
Handle to the OCR document.
Document ID created by calling L_Doc2CreateDocument.
Pointer to the bitmap handle that references the new page to be updated into the internal OCR list of pages.
Zero-based index of the page to be updated.
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes. |
Use this function to update the content of a page after performing image processing on it.
For example, after a page is flipped using the L_FlipBitmap function, this function should then be called to update the OCR page.
✅ IMPORTANT
Before using this function it is necessary to lock the page for updating by calling the L_Doc2LockPage / L_Doc2LockPageExt function, and after the update is completed, and then unlock the page by calling the L_Doc2UnlockPage / L_Doc2UnlockPageExt function.
Required DLLs and Libraries
L_INT Doc2UpdatePageExampleExt(L_HDOC2 hDoc, L_INT nDocId, L_INT nPageIndex, pBITMAPHANDLE pBitmap)
{
L_INT nRet;
nRet = L_Doc2LockPageExt (hDoc, nDocId, nPageIndex);
if(nRet != SUCCESS)
return nRet;
nRet = L_Doc2UpdatePageExt(hDoc, nDocId, pBitmap, nPageIndex);
if (nRet != SUCCESS)
{
MessageBox(NULL, TEXT("An error occurred during L_Doc2UpdatePage."), TEXT("Error!"), MB_OK);
return nRet;
}
else
MessageBox(NULL, TEXT("The specified page is updated."), TEXT("Notice!"), MB_OK);
nRet = L_Doc2UnlockPageExt (hDoc, nDocId, nPageIndex);
if(nRet != SUCCESS)
return nRet;
return SUCCESS;
}