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Tip of the Day
Language: VB4/32,VB5,VB6
Expertise: Advanced
Jun 19, 1999



Building the Right Environment to Support AI, Machine Learning and Deep Learning

ObjFromPtr - Return an object from its pointer

Private Declare Sub CopyMemory Lib "Kernel32" Alias "RtlMoveMemory" (dest As _
    Any, Source As Any, ByVal bytes As Long)

' Returns an object given its pointer
' This function reverses the effect of the ObjPtr function

Function ObjFromPtr(ByVal pObj As Long) As Object
    Dim obj As Object
    ' force the value of the pointer into the temporary object variable
    CopyMemory obj, pObj, 4
    ' assign to the result (this increments the ref counter)
    Set ObjFromPtr = obj
    ' manually destroy the temporary object variable 
    ' (if you omit this step you'll get a GPF!)
    CopyMemory obj, 0&, 4
End Function
Marco Losavio
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