(C++) Update a String Property in XMP

Demonstrates how to open a JPG or TIF image file, access the XMP metadata, and update the value of a string property. (If the string property does not already exist, it is created.)

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

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

    CkXmp xmp;

    // Load a JPG or TIF image file.
    bool success = xmp.LoadAppFile("qa_data/xmp/AJ_123642_1511.tif");
    if (success != true) {
        std::cout << xmp.lastErrorText() << "\r\n";
        return;
    }

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

    // This example assumes that XMP metadata is already present in the image file.
    if (xmp.get_NumEmbedded() == 0) {
        std::cout << "No XMP metadata already exists.." << "\r\n";
        return;
    }

    // Get the XMP metadata.
    CkXml *xml = 0;
    xml = xmp.GetEmbedded(0);

    // Show the XML:
    std::cout << xml->getXml() << "\r\n";

    // Update (overwrite) a string property.
    xmp.AddSimpleStr(*xml,"NumberofTimes","123");

    success = xmp.SaveAppFile("qa_output/updated.tif");
    if (success != true) {
        std::cout << xmp.lastErrorText() << "\r\n";
        return;
    }

    std::cout << "Success." << "\r\n";
    }