Remove Last Property in Schema

Code to test removing the last property in a schema. When the last property is removed, the rdf:Description node should also be automatically removed.

    ' Remove all the properties for a specific schema.
    ' When the last property is removed, the "rdf:Description" node
    ' is also removed.
    ' 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
        
    xmp.RemoveSimple xml, "xap:CreateDate"
    xmp.RemoveSimple xml, "xap:ModifyDate"
    xmp.RemoveSimple xml, "xap:MetadataDate"
    xmp.RemoveSimple xml, "xap:CreatorTool"
    
    ' Save the XML to verify.
    ' (This line is not necessary, it is only here for extra information.)
    xml.SaveXml "out.xml"
    
    ' Save the JPG.
    xmp.SaveAppFile "out.jpg"