' This example adds a 3D face to the drawing.

     ' It then uses the GetInvisibleEdge and SetInvisibleEdge methods.

     Dim faceObj As IntelliCAD.Face3D

     Dim icadDoc As IntelliCAD.Document

     Dim Pt1 As IntelliCAD.Point

     Dim Pt2 As IntelliCAD.Point

     Dim Pt3 As IntelliCAD.Point

     Dim Pt4 As IntelliCAD.Point

     Dim myObj As Object

     Dim visStatus As Boolean

     Set icadDoc = ActiveDocument

     ' Define the four coordinates of the face

     Set Pt1 = Library.CreatePoint(0, 0, 0)

     Set Pt2 = Library.CreatePoint(3, 0, 2)

     Set Pt3 = Library.CreatePoint(6, 5, 0)

     Set Pt4 = Library.CreatePoint(4, 4, 2)

     ' Add the 3DFace object

     Set faceObj = icadDoc.ModelSpace.Add3DFace(Pt1, Pt2, Pt3, Pt4)

     faceObj.Update

     ThisDocument.Application.ZoomExtents

     visStatus = faceObj.GetInvisibleEdge(0)

     MsgBox "The visibility status of the face is currently: " & visStatus

     ' Toggle the visibility of the first edge of the face

     faceObj.SetInvisibleEdge 0, Not (visStatus)

     faceObj.Update

     MsgBox "The visibility status of the face is now: " & visStatus

End Sub