Why  don't find View in xxx.SldDrt file?

In Sheet Format, SwDraw.GetFirstView → don't find View → Ss = SwView.GetAnnotations → result is 0

Follow code is  swview.GetFirstView

Private Sub ll()

  Dim SwApp As SldWorks.SldWorks, SwModel As ModelDoc2

     Set SwApp = Application.SldWorks

     Set SwModel = SwApp.ActiveDoc

  Dim SwDraw As DrawingDoc, SwView As View

     Set SwDraw = SwModel

     Set SwView = SwDraw.GetFirstView

     Debug.Print SwView.GetName2,

     'Set SwView = SwView.GetNextView

     'Debug.Print SwView.GetName2

  Dim SwAnn As Annotation, Ss, ii

     'SwModel.HideShowDimensions

     Debug.Print SwView.GetAnnotationCount

     'Stop

     Ss = SwView.GetAnnotations

     'Stop

     For ii = 0 To UBound(Ss)

        Set SwAnn = Ss(ii)

        SwAnn.Select True

        'Stop

        Debug.Print SwAnn.GetName

        SwAnn.Visible = 1

     Next ii

    Dim SwSheet As Sheet

       Set SwSheet = SwDraw.GetCurrentSheet

       Stop

       Ss = SwSheet.CustomPropertyView

End Sub