Visual Basic 6.0

Check if a MIME Part is an Image

Demonstrates the Chilkat Mime.IsImage method, which returns whether the Content-Type begins with image/. It takes no arguments and applies to the current part.

Note: The file path is relative to the application's current working directory. Absolute paths may also be used. Supply the path to your own file.

Background: This locates image parts — inline graphics in a multipart/related message, or image attachments — so your code can preview thumbnails, extract them, or handle them differently from documents. It matches any image/ subtype, including image/svg+xml.

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Visual Basic 6.0

Dim success As Long
success = 0

'  Demonstrates the Mime.IsImage method, which returns whether the Content-Type begins with image/.  It takes no arguments and applies to the current
'  part.  This example iterates the parts of a multipart message and reports which ones match.

Dim mime As New ChilkatMime
success = mime.LoadMimeFile("qa_data/multipart_message.eml")
If (success = 0) Then
    Debug.Print mime.LastErrorText
    Exit Sub
End If

Dim n As Long
n = mime.NumParts
Dim part As New ChilkatMime
Dim i As Long
For i = 0 To n - 1
    success = mime.PartAt(i,part)
    If (success = 0) Then
        Debug.Print mime.LastErrorText
        Exit Sub
    End If

    If (part.IsImage()) Then
        Debug.Print "Part " & i & " (" & part.ContentType & ") is an image."
    End If

Next