Is there a shorter expression that brings the same result as "IsNull(ctrl.Value) Or Len(Trim(ctrl.Value)) = 0"?

For example:
Code:
    If IsNull(ctrl.Value) Or Len(Trim(ctrl.Value)) = 0 Then
        str = "nuthin here"
    End If

    ' equals

    If ???? Then
        str = "nuthin here"
    End If
Matt(+)