(Xojo Plugin) 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).

Chilkat Xojo Plugin Download Xojo Plugin for Windows, Linux, Mac OS X, and ARM, ARM64

// 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
Dim success As Boolean
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

    Dim propVal As String
    propVal = xmp.GetStructValue(xml,"Iptc4xmpCore:CreatorContactInfo","Iptc4xmpCore:CiTelWork")
    If (xmp.LastMethodSuccess <> True) Then
        System.DebugLog("Not found.")
    Else
        System.DebugLog(propVal)
    End If

Else
    System.DebugLog(xmp.LastErrorText)
End If