类似这样的:
Sub Tester()
Dim sa As Shape, sb As Shape, sld As Slide
Dim ff As FreeformBuilder
Set sld = ActivePresentation.Slides(1) 'for example
Set sa = sld.Shapes(1)
Set sb = sld.Shapes(2)
Set ff = sld.Shapes.BuildFreeform(EditingType:=msoEditingCorner, _
X1:=sa.Left + sa.Width, Y1:=sa.Top)
ff.AddNodes msoSegmentLine, msoEditingCorner, sb.Left, sb.Top
ff.AddNodes msoSegmentLine, msoEditingCorner, sb.Left, sb.Top + sb.Height
ff.AddNodes msoSegmentLine, msoEditingCorner, sa.Left + sa.Width, sa.Top + sa.Height
ff.AddNodes msoSegmentLine, msoEditingCorner, sa.Left + sa.Width, sa.Top
ff.ConvertToShape
End Sub