L_Doc2DetectOrientationDegree

#include "ltdoc2.h"

L_LTDOC2_API L_INT EXT_FUNCTION L_Doc2DetectOrientationDegree(hDoc, nPageIndex, pnRotate)

Determines the angle by which the specified page needs to be oriented.

Returns

Comments

The purpose of orientation is to make the page more readable during recognition by making sure the top of the page is positioned properly. That is, a page that is oriented correctly like this:

is much more readable than the same page oriented like this:

Please note that this function just provides the angle of orientation that is needed. It does not actually orient the page. To orient the page, call the L_Doc2AutoOrientPage function.

If the specified page does not need to be oriented the pnRotate parameter is updated with 0.

To automatically orient a page, call the L_Doc2AutoOrientPage function.

Required DLLs and Libraries

L_INT Doc2DetectOrientationDegreeExample(L_HDOC2 hDoc,L_INT nPageIndex) 
{ 
   L_INT nRet; 
   L_INT nRotate = 0; 
   nRet = L_Doc2DetectOrientationDegree(hDoc, nPageIndex, &nRotate); 
   if (nRet == SUCCESS) 
   { 
      L_TCHAR szBuffer[1024]; 
      wsprintf(szBuffer, TEXT("Orientation degree = %d"), nRotate); 
      MessageBox(NULL, szBuffer, TEXT("Notice!"), MB_OK); 
   } 
   else 
      return nRet; 
   return SUCCESS; 
}