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

loXmp = createobject("CkXmp")

// 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
llSuccess = loXmp.LoadAppFile("sample1.jpg")
if (llSuccess <> .T.) then
    ? loXmp.LastErrorText
    release loXmp
    return
endif

? "Num embedded XMP docs: " + str(loXmp.NumEmbedded)

// Assuming there is at least one, get the 1st.
// (There is typically never more than one, but theoretically it's possible.)
loXml = loXmp.GetEmbedded(0)
if (loXmp.LastMethodSuccess = .T.) then

    lcPropVal = loXmp.GetStructValue(loXml,"Iptc4xmpCore:CreatorContactInfo","Iptc4xmpCore:CiTelWork")
    if (loXmp.LastMethodSuccess <> .T.) then
        ? "Not found."
    else
        ? lcPropVal
    endif

    release loXml

else
    ? loXmp.LastErrorText
endif



release loXmp