L_DocZone

#include "ltdoc.h"

L_INT EXT_FUNCTION L_DocZone(hDoc, nPageIndex, nZoneIndex, lpArea)

L_HDOC hDoc;	/* handle to the OCR document */
L_INT nPageIndex;	/* page index */
L_INT nZoneIndex;	/* zone index */
LPRECT lpArea;	/* pointer to a RECT structure */

Updates the specified zone area.

Parameter	Description
hDoc	Handle to the OCR document.
nPageIndex	Page index. This index is zero-based.
nZoneIndex	Zone index that will be updated. This index is zero-based.
lpArea	Pointer to the Windows RECT structure which contains the new zone area.

Returns

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

Comments

Updates the specified zone area in the specified page.

To update general zone information, call L_DocUpdateZone.

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_DocLockPage, L_DocUnlockPage, L_DocSetActivePage, L_DocDrawPage, L_DocSelectZoneByPoint, L_DocSelectZone, L_DocRemoveSelectedZone, L_DocSetZonePen, L_DocSetSelectedZonePen, L_DocGetSelectedZone
Topics:	OCR Functions: Zones
	Drawing Pages and Zones

Example

void UpdateSelectedZone(L_HDOC hDoc, HWND hWnd)
{
   HDC hdc = GetDC(hWnd);
   L_INT nSelZone;
   POINT pt;

   pt.x = 100;
   pt.y = 100;

   L_INT nRet = L_DocSelectZoneByPoint(hDoc, hdc, 0, pt, &nSelZone);
   if (nRet == SUCCESS)
   {
      ZONEDATA ZoneData;

      memset(&ZoneData, 0, sizeof(ZONEDATA));

      // gets the zone data for the current selected zone...
      nRet = L_DocGetSelectedZone(hDoc, 0, &ZoneData, sizeof(ZONEDATA));
      if (nRet == SUCCESS)
      {
         // update the area for the current selected zone...

         ZoneData.rcArea.left += 10;
         ZoneData.rcArea.top += 10;
         ZoneData.rcArea.right += 50;
         ZoneData.rcArea.bottom += 50;
         nRet = L_DocZone(hDoc, 0, nSelZone, &ZoneData.rcArea);
         if (nRet == SUCCESS)
            MessageBox(NULL, TEXT("The selected zone area is updated."), TEXT("Notice!"), MB_OK);
      }

      ReleaseDC(hWnd, hdc);
   }
}