Display XMP rdf:Bag, rdf:Seq, or rdf:Alt

Demonstrates how to access the items of an XMP array property.

    ' Display the contents of an array (rdf:Bag) property of an XMP
    ' The same code works for rdf:Seq and rdf:Alt properties.
    
    ' Create an instance of the XMP ActiveX and unlock it.
    Dim xmp As New ChilkatXmp
    success = xmp.UnlockComponent("anything for 30 day trial")
    If (success = 0) Then
        MsgBox "Failed to unlock"
        Exit Sub
    End If
    
    ' Load a JPG file.
    success = xmp.LoadAppFile("IndependantPhotographer-Example.jpg")
     If (success = 0) Then
        MsgBox xmp.LastErrorText
        Exit Sub
    End If
   
   ' Get the 1st (and only) XMP in this JPG.
    Dim xml As ChilkatXml
    Set xml = xmp.GetEmbedded(0)
    If (xml Is Nothing) Then
        MsgBox xmp.LastErrorText
        Exit Sub
    End If
        
    ' Get the dc:subject rdf:bag property
    Dim sa As CkStringArray
    Set sa = xmp.GetArray(xml, "dc:subject")
    If (sa Is Nothing) Then
        MsgBox "dc:subject property not found"
        Exit Sub
    End If
    
    ' Display the items within the array.
    n = sa.Count
    For i = 0 To n - 1
        List1.AddItem sa.GetString(i)
    Next