Class Property (All CDO Library Objects)

The Class property returns the object class of the object. Read-only.

Syntax

object.Class

Data Type

Long

Remarks

The Class property contains a numeric constant that identifies the CDO Library object. The following values are defined:

CDO also defines CdoUnknown, with the value –1, for an object implementing the OLE IUnknown interface.

The Class property does not correspond to a MAPI property and cannot be rendered into HTML hypertext by the CDO Rendering Library.

Example

' Function: Util_DecodeObjectClass 
' Purpose: Decode the long integer class value, 
'          show the related object name 
' See documentation topic: Class property 
Function Util_DecodeObjectClass(lClass As Long) 
' error handling here ... 
Select Case (lClass) 
    Case CdoSession: 
        MsgBox ("Session object; Class = " & lClass) 
    Case CdoMsg: 
        MsgBox ("Message object; Class = " & lClass) 
End Select 
' error handling ... 
End Function 
 
' Function: TestDrv_Util_DecodeObjectClass 
' Purpose: Call the utility function DecodeObjectClass for Class values 
' See documentation topic: Class property 
Function TestDrv_Util_DecodeObjectClass() 
' error handling here ... 
If objSession Is Nothing Then 
    MsgBox "Need to set the Session object: Session->Logon" 
    Exit Function 
End If 
' expect type CdoSession = 0 for Session object 
Util_DecodeObjectClass (objSession.Class) 
Set objMessages = objSession.Inbox.Messages 
Set objOneMsg = objMessages.GetFirst 
If objOneMsg Is Nothing Then 
    MsgBox "Inbox is empty" 
    Exit Function 
End If 
' expect type CdoMessage = 3 for Message object 
Util_DecodeObjectClass (objOneMsg.Class) 
' error handling here ... 
End Function