References ▼
Retrieves the graphic header information of a specific graphic segment.
#include "ltwrappr.h"
L_INT LNITFFile::GetGraphicHeader(uIndex, pGraphicHeader)
A zero-based index of the graphic segment in the NITF file.
Pointer to a GRAPHICHEADER structure to be updated with the graphic header information of the specified graphic 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 graphic segments available in the NITF file, call the LNITFFile::GetGraphicHeaderCount function.
To change the graphic header information for a specific graphic segment, call the LNITFFile::SetGraphicHeader function.
L_INT LNITFFile_GetGraphicHeaderExample(){// Create hNitf handle and parse the NITF fileLNITFFile Nitf;Nitf.Create (MAKE_IMAGE_PATH(TEXT("test.ntf")));L_UINT uFlags = 0;GRAPHICHEADER GraphicHeader;L_UINT uCount;L_UINT i = 0;memset(&GraphicHeader, 0, sizeof(GRAPHICHEADER));// 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.GetGraphicHeaderCount ();for( i = 0; i < uCount; ++i){if(Nitf.GetGraphicHeader(i, &GraphicHeader) == SUCCESS){GraphicHeader.nSBND1Row = 20;GraphicHeader.nSBND1Col = 50;GraphicHeader.nSBND2Row = 200;GraphicHeader.nSBND2Col = 400;Nitf.SetGraphicHeader (i, &GraphicHeader);Nitf.FreeGraphicHeader(&GraphicHeader);}}Nitf.SaveFile (MAKE_IMAGE_PATH(TEXT("test1.ntf")));Nitf.Destroy ();return SUCCESS;}