#include "ltdoc2.h"
L_LTDOC2_API L_INT EXT_FUNCTION L_Doc2UpdatePage(hDoc, pBitmap, nPageIndex)
Updates the current page with a new bitmap.
Handle to the OCR document.
Pointer to the bitmap handle that references the new page to be updated into the internal OCR list of pages.
Index of the page to be updated. This is a zero-based index.
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 Doc2UpdatePageExample(L_HDOC2 hDoc, L_INT nPageIndex, pBITMAPHANDLE pBitmap)
{
L_INT nRet;
nRet = L_Doc2LockPage (hDoc, nPageIndex);
if(nRet != SUCCESS)
return nRet;
nRet = L_Doc2UpdatePage(hDoc, 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_Doc2UnlockPage (hDoc, nPageIndex);
if(nRet != SUCCESS)
return nRet;
return SUCCESS;
}