(Unicode C++) Get a Structure Property Value from XMP

Demonstrates how to open a JPG or TIF image file, access the XMP metadata, and fetch the value of a structure property, such as the Iptc4xmpCore:CiTelWork (found within the Iptc4xmpCore:CreatorContactInfo structure).

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#include <CkXmpW.h>
#include <CkXmlW.h>

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

    CkXmpW 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(L"sample1.jpg");
    if (success != true) {
        wprintf(L"%s\n",xmp.lastErrorText());
        return;
    }

    wprintf(L"Num embedded XMP docs: %d\n",xmp.get_NumEmbedded());

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

        const wchar_t *propVal = xmp.getStructValue(*xml,L"Iptc4xmpCore:CreatorContactInfo",L"Iptc4xmpCore:CiTelWork");
        if (xmp.get_LastMethodSuccess() != true) {
            wprintf(L"Not found.\n");
        }
        else {
            wprintf(L"%s\n",propVal);
        }

        delete xml;

    }
    else {
        wprintf(L"%s\n",xmp.lastErrorText());
    }
    }