To run this sample have a drawing open where the active sheet contains at least one drawing view.
Private Sub CreateDrawingSketchInView()
' Set a reference to the active document. This assumes it
' is a drawing document.
Dim oDoc As DrawingDocument
Set oDoc = ThisApplication.ActiveDocument
' Set a reference to the first drawing view on the active sheet. This
' assumes the active sheet contains at least one drawing view.
Dim oDrawView As DrawingView
Set oDrawView = oDoc.ActiveSheet.DrawingViews.Item(1)
' Create the new drawing sketch.
Dim oSketch As DrawingSketch
Set oSketch = oDrawView.Sketches.Add
' Set a reference to the transient geometry object.
Dim oTG As TransientGeometry
Set oTG = ThisApplication.TransientGeometry
' Open the sketch for edit.
oSketch.Edit
' Draw two lines in the sketch.
Call oSketch.SketchLines.AddByTwoPoints(oTG.CreatePoint2d(0, 0), oTG.CreatePoint2d(3, 3))
Call oSketch.SketchLines.AddByTwoPoints(oTG.CreatePoint2d(0, 3), oTG.CreatePoint2d(3, 0))
' Exit from editing the sketch.
oSketch.ExitEdit
End Sub