Imports System.IO
Imports System.Runtime.InteropServices

Module Example
    <STAThread()> _
    Sub Main()
        Dim objApplication As SolidEdgeFramework.Application = Nothing
        Dim objDraftPrintUtility As SolidEdgeDraft.DraftPrintUtility = Nothing

        Try
            OleMessageFilter.Register()

            objApplication = Marshal.GetActiveObject("SolidEdge.Application")
            objDraftPrintUtility = objApplication.GetDraftPrintUtility()

            ' Toggle units
            Select Case objDraftPrintUtility.Units
                Case SolidEdgeDraft.DraftPrintUnitsConstants.igDraftPrintInches
                    objDraftPrintUtility.Units = SolidEdgeDraft.DraftPrintUnitsConstants.igDraftPrintMillimeters
                Case SolidEdgeDraft.DraftPrintUnitsConstants.igDraftPrintMillimeters
                    objDraftPrintUtility.Units = SolidEdgeDraft.DraftPrintUnitsConstants.igDraftPrintInches
            End Select

        Catch ex As Exception
            Console.WriteLine(ex.Message)
        Finally
            OleMessageFilter.Revoke()
        End Try
    End Sub
End Module