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LNITFFile::GetTextHeader

#include "ltwrappr.h"

L_INT LNITFFile::GetTextHeader(uIndex, pTxtHeader)

Retrieves the text header information of a specific text segment.

Parameters

L_UINT uIndex

A zero-based index of the text segment in the NITF file.

pTXTHEADER pTxtHeader

Pointer to a TXTHEADER structure to be updated with the text header information of the specified text segment at the index uIndex.

Returns

Value	Meaning
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 NITF file, call the LNITFFile::GetTextHeaderCount function.

To change the text header information for a specific text segment, call the LNITFFile::SetTextHeader 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.

Functions

Topics

Example

L_INT LNITFFile_GetTextHeaderExample() 
{ 
   //Parse the NITF file 
   LNITFFile Nitf;  
 
   Nitf.Create (MAKE_IMAGE_PATH(TEXT("test.ntf"))); 
 
   L_UINT uFlags = 0;  
   TXTHEADER TextHeader;  
   L_UINT uCount;  
   L_UINT i = 0;  
 
   memset(&TextHeader, 0, sizeof(TXTHEADER));  
 
   // Check if the NITF is empty or invalid 
   uFlags = Nitf.GetStatus (); 
   if((uFlags & NITF_FILE_EMPTY) == NITF_FILE_EMPTY)  
   { 
      MessageBox(NULL, TEXT("NITF file is empty"), 0, 0); 
      return SUCCESS; 
   } 
 
   if((uFlags & NITF_FILE_VALID) != NITF_FILE_VALID)  
   { 
      MessageBox(NULL, TEXT("NITF file is invalid"), 0, 0); 
      return SUCCESS; 
   } 
 
   // Update the graphic header 
   uCount = Nitf.GetTextHeaderCount (); 
   for( i = 0; i < uCount; ++i)  
   { 
      if(Nitf.GetTextHeader(i, &TextHeader) == SUCCESS)  
      { 
         TextHeader.pTXTITL = "LEAD Technologies, Inc"; 
         Nitf.SetTextHeader (i, &TextHeader);  
         Nitf.FreeTextHeader(&TextHeader); 
      } 
   } 
 
 
 
   Nitf.SaveFile (MAKE_IMAGE_PATH(TEXT("test1.ntf"))); 
 
   Nitf.Destroy (); 
 
   return SUCCESS; 
}

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