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Retrieves the image header information of a specific graphic segment.
#include "ltwrappr.h"
L_INT LNITFFile::GetImageHeader(uIndex, pImageHeader)
A zero-based index of the image segment in the NITF file.
Pointer to an IMAGEHEADER structure to be updated with the image header information of the specified image segment at the index uIndex.
| Value | Meaning |
|---|---|
| SUCCESS | The function was successful. |
| < 1 | An error occurred. Refer to Return Codes. |
To retrieve the number of the image segments available in the NITF file, call the LNITFFile::GetImageHeaderCount function.
To change the image header information for a specific graphic segment, call the LNITFFile::SetImageHeader function.
L_INT LNITFFile_GetImageHeaderExample(){//Parse the NITF fileLNITFFile Nitf;Nitf.Create (MAKE_IMAGE_PATH(TEXT("test.ntf")));L_UINT uFlags = 0;IMAGEHEADER ImageHeader;L_UINT uCount;L_UINT i = 0;memset(&ImageHeader, 0, sizeof(IMAGEHEADER));// Check if the NITF File is empty or invaliduFlags = 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 headeruCount = Nitf.GetImageHeaderCount ();for( i = 0; i < uCount; ++i){if(Nitf.GetImageHeader(i, &ImageHeader) == SUCCESS){ImageHeader.nILOCCol = 50;ImageHeader.nILOCRow = 50;Nitf.SetImageHeader (i, &ImageHeader);Nitf.FreeImageHeader(&ImageHeader);}}Nitf.SaveFile (MAKE_IMAGE_PATH(TEXT("test1.ntf")));Nitf.Destroy ();return SUCCESS;}