(C++) XMP Array Property - Bag, Seq, or Alt

How to insert or update an XMP array property (bag, seq, or alt).

Chilkat C/C++ Library Downloads
MS Visual C/C++ Linux/CentOS C/C++ Alpine Linux C/C++ MAC OS X C/C++	armhf/aarch64 C/C++ C++ Builder iOS C/C++ Android C/C++	Solaris C/C++ MinGW C/C++

#include <CkXmp.h>
#include <CkXml.h>
#include <CkStringArray.h>

void ChilkatSample(void)
    {
    // This requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkXmp xmp;

    // Load a JPG or TIF image file.
    // Sample JPG's with XMP metadata may be found at:
    // http://www.chilkatsoft.com/testData/xmp/sample1.jpg
    // http://www.chilkatsoft.com/testData/xmp/sample2.jpg
    // http://www.chilkatsoft.com/testData/xmp/sample3.jpg
    bool success = xmp.LoadAppFile("sample1.jpg");
    if (success != true) {
        std::cout << xmp.lastErrorText() << "\r\n";
        return;
    }

    std::cout << "Num embedded XMP docs: " << xmp.get_NumEmbedded() << "\r\n";

    // Assuming there is at least one, get the 1st.
    // (There is typically never more than one, but theoretically it's possible.)
    CkXml *xml = 0;
    xml = xmp.GetEmbedded(0);
    if (xmp.get_LastMethodSuccess() == true) {

        // Create an object to hold one or more string values.
        CkStringArray sa;
        success = sa.Append("value_1");
        success = sa.Append("value_2");
        // ...

        success = xmp.AddArray(*xml,"bag","Iptc4xmpCore:Chilkat",sa);
        if (success != true) {
            std::cout << xmp.lastErrorText() << "\r\n";
        }
        else {
            // Save the JPG.
            success = xmp.SaveAppFile("modified.jpg");
            if (success != true) {
                std::cout << xmp.lastErrorText() << "\r\n";
            }

        }

        delete xml;

    }
    else {
        std::cout << xmp.lastErrorText() << "\r\n";
    }
    }