L_DocGetZone

#include "ltdoc.h"

L_INT EXT_FUNCTION L_DocGetZone(hDoc, nPageIndex, nZoneIndex, pZoneData, uStructSize)

L_HDOC hDoc;	/* handle to the OCR document */
L_INT nPageIndex;	/* page index */
L_INT nZoneIndex;	/* zone index */
pZONEDATA pZoneData;	/* pointer to a ZONEDATA structure */
L_UINT uStructSize;	/* size of the structure */

Gets information about the zone at the specified index in the zone list of the specified page.

Parameter	Description
hDoc	Handle to the OCR document.
nPageIndex	Specifies the index of the page from which to get the zone information. This is a zero-based index.
nZoneIndex	Specifies the index of the zone for which to get the information. This is a zero-based index.
pZoneData	Pointer to a ZONEDATA structure that will be updated with zone information.
uStructSize	Specifies the size of the structure pointed to by pZoneData, use sizeof(ZONEDATA) to calculate this value.

Returns

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

Comments

Retrieves zone information for the specified zone index in the specified page.

To remove a specific zone, call L_DocRemoveZone.

To add a zone, call L_DocAddZone.

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_DocAddZone, L_DocGetZoneCount, L_DocUpdateZone, L_DocRemoveZone, L_DocImportZones, L_DocExportZones, L_DocFindZones, L_DocSetZoneOptions, L_DocGetZoneOptions
Topics:	OCR Functions: Zones
	Working with Zones

Example

void TestUpdateZone(L_HDOC hDoc, L_INT nPageIndex, L_INT nZoneIndex)
{
   ZONEDATA ZoneData;
   memset(&ZoneData, 0, sizeof(ZONEDATA));

   L_INT nRet = L_DocGetZone(hDoc, nPageIndex, nZoneIndex, &ZoneData, sizeof(ZONEDATA));
   if (nRet != SUCCESS)
   {
      MessageBox(NULL, TEXT("Couldn't get the specified zone information."), TEXT("Error!"), MB_OK);
      return;
   }

   if (ZoneData.FillMethod != FILL_OCRA)
      ZoneData.FillMethod = FILL_OCRA;

   if (ZoneData.Type != ZONE_GRAPHIC)
      ZoneData.Type = ZONE_GRAPHIC;

   nRet = L_DocUpdateZone(hDoc, nPageIndex, nZoneIndex, &ZoneData);
   if (nRet == SUCCESS)
      MessageBox(NULL, TEXT("The specified zone is updated."), TEXT("Notice!"), MB_OK);
}