L_NITFGetTextHeader

#include "ltntf.h"

L_LTNTF_API L_INT L_NITFGetTextHeader(hNitf, uIndex, pTxtHeader)

HNITF hNitf;	/* handle to an existing NITF file */
L_UINT uIndex;	/* index of the text segment */
pTXTHEADER pTxtHeader;	/* pointer to a TXTHEADER structure */

Retrieves the text header information of a specific text segment.

Parameter	Description
hNitf	Handle to an existing NITF file, created by calling the L_NITFCreate function.
uIndex	A zero-based index of the text segment in the hNitf handle.
pTxtHeader	Pointer to a TXTHEADER structure to be updated with the text header information of the specified text segment at the index uIndex.

Returns

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

Comments

To retrieve the number of the text segments available in the hNitf handle, call the L_NITFGetTextHeaderCount function.

To change the text header information for a specific text segment, call the L_NITFSetTextHeader function.

Required DLLs and Libraries

LTNTF

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_NITFCreate, L_NITFGetTextHeaderCount, L_NITFSetTextHeader
Topics:	NITF Functions: Getting and Setting Header Information
	Programming with LEADTOOLS NITF Functions

Example

L_LTNTFTEX_API L_INT NITFGetTextHeaderExample(L_VOID)
{
   L_INT nRet = SUCCESS;
   HNITF hNitf;
   L_UINT uFlags = 0;
   TXTHEADER TextHeader;
   L_UINT uCount;
   L_UINT i = 0;
   memset(&TextHeader, 0, sizeof(TXTHEADER));
   //Create hNitf Handle and Parse the NITF File
   nRet =L_NITFCreate (&hNitf, TEXT("C:\\Program Files\\LEAD Technologies\\LEADTOOLS 16\\Images\\test.ntf"));
   if(nRet !=SUCCESS)
      return nRet;
   //Check if the hNITF is Empty or Invalid
   uFlags = L_NITFGetStatus(hNitf);
   if((uFlags & NITF_FILE_EMPTY) == NITF_FILE_EMPTY)
   {
      MessageBox(NULL,TEXT("NITF File is Empty"),NULL,MB_OK);
      return FAILURE;
   }
   if((uFlags & NITF_FILE_VALID) != NITF_FILE_VALID)
   {
      MessageBox(NULL,TEXT("NITF File is Invalid"),NULL,MB_OK);
      return FAILURE;
   }
   // Update the Text Header
   uCount = L_NITFGetTextHeaderCount(hNitf);
   for( i = 0; i < uCount; ++i)
      {
         memset(&TextHeader, 0, sizeof(TextHeader));
          nRet = L_NITFGetTextHeader(hNitf, i, &TextHeader);
         if(nRet == SUCCESS)
         {
            TextHeader.pTXTITL = "LEAD Technologies, Inc";
            nRet =L_NITFSetTextHeader(hNitf, i, &TextHeader);
            if(nRet !=SUCCESS)
               return nRet;
            L_NITFFreeTextHeader(&TextHeader);
         }
         else
            return nRet;
      }
   nRet =L_NITFSaveFile(hNitf,TEXT("C:\\Program Files\\LEAD Technologies\\LEADTOOLS 16\\Images\\test2.ntf"));
   if(nRet !=SUCCESS)
      return nRet;
   nRet =L_NITFDestroy(&hNitf);
   if(nRet !=SUCCESS)
      return nRet;
   return SUCCESS;
   }