Xojo Plugin

XMP Array Property - Bag, Seq, or Alt

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

Dim success As Boolean
success = False

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

Dim xmp As New Chilkat.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
success = xmp.LoadAppFile("sample1.jpg")
If (success <> True) Then
    System.DebugLog(xmp.LastErrorText)
    Return
End If

System.DebugLog("Num embedded XMP docs: " + Str(xmp.NumEmbedded))

// Assuming there is at least one, get the 1st.
// (There is typically never more than one, but theoretically it's possible.)
Dim xml As Chilkat.Xml
xml = xmp.GetEmbedded(0)
If (xmp.LastMethodSuccess = True) Then

    // Create an object to hold one or more string values.
    Dim sa As New Chilkat.StringArray
    success = sa.Append("value_1")
    success = sa.Append("value_2")
    // ...

    success = xmp.AddArray(xml,"bag","Iptc4xmpCore:Chilkat",sa)
    If (success <> True) Then
        System.DebugLog(xmp.LastErrorText)
    Else
        // Save the JPG.
        success = xmp.SaveAppFile("modified.jpg")
        If (success <> True) Then
            System.DebugLog(xmp.LastErrorText)
        End If

    End If

Else
    System.DebugLog(xmp.LastErrorText)
End If