Background:
I am attempting to write a macro that will allow users to select lines on their drawings and then the lines will become bolded.
That part of the code is working great, however it just wont stop.  The macro keeps running and I cannot end it. I have included the text for users to check.

I do not know exactly what is happening here as this is my first time dealing with classes

Code text:

Dim swApp As SldWorks.SldWorks

Dim swModel As SldWorks.ModelDoc2

Dim swDraw As SldWorks.drawingDoc

Dim selMgr As SldWorks.SelectionMgr

Dim boolstatus As Boolean

Dim drawingDoc As New Class1

Sub main()

Set swApp = Application.SldWorks

Set swModel = swApp.ActiveDoc

drawingDoc.init swModel

End Sub

Class1:

Public WithEvents doc As drawingDoc

Public Function init(ByRef docin As Object)

    Set doc = docin

End Function

Private Function doc_UserSelectionPostNotify() As Long

        doc.SetLineWidth 3

End Function