Create and Attach HyperLink Example (VB.NET)

'--------------------------------------------------------------
' Preconditions:
' 1. Create a VB.NET Windows console project.
' 2. Copy and paste this example into the VB.NET IDE.
' 3. Add a reference to:
'    install_dir\APISDK\tlb\DraftSight.Interop.dsAutomation.dll.
' 4. Add references to System and System.Windows.Forms.
' 5. Start DraftSight and open a drawing document.
' 6. Click Start Debugging.
'
' Postconditions:
' 1. A Circle is constructed in the drawing document.
' 2. A HyperLink is created and attached to the Circle.
' 3. In DraftSight, put the cursor on the Circle to see the
'    the hyperlink and Ctrl+click to open DraftSight's website.
'----------------------------------------------------------------
Imports System.Collections.Generic
Imports System.Text
Imports DraftSight.Interop.dsAutomation
Imports System.Runtime.InteropServices
Imports System.Windows.Forms
Imports System.Diagnostics


Module Module1

    Sub Main()

        Dim dsDoc As Document
        Dim dsModel As Model
        Dim dsSketchManager As SketchManager
        Dim dsCircle As Circle
        Dim centerX, centerY, centerZ, radius As Double

        'Connect to DraftSight
        Dim dsApp = GetObject(, "DraftSight.Application")
        dsApp.AbortRunningCommand() ' abort any command currently running in DraftSight to avoid nested commands

        'Get active document
        dsDoc = dsApp.GetActiveDocument()
        If Not dsDoc Is Nothing Then

            'Get model space
            dsModel = dsDoc.GetModel()

            'Get Sketch Manager
            dsSketchManager = dsModel.GetSketchManager()

            'Circle parameters
            centerX = 1.0#
            centerY = 2.0#
            centerZ = 0.0#
            radius = 5.0#

            'Construct a Circle
            dsCircle = dsSketchManager.InsertCircle(centerX, centerY, centerZ, radius)

            'Create and attach HyperLink to Circle
            Dim startCornerX As Double
            startCornerX = 0.0#
            Dim startCornerY As Double
            startCornerY = 0.0#
            Dim startCornerZ As Double
            startCornerZ = 0.0#
            Dim oppositeCornerX As Double
            startCornerX = 0.0#
            Dim oppositeCornerY As Double
            startCornerY = 0.0#
            Dim oppositeCornerZ As Double
            startCornerZ = 0.0#
            Dim hyperLinkAddress As String
            hyperLinkAddress = "http://www.3ds.com/products/draftsight/free-cad-software/"
            Dim description As String
            description = "DraftSight's website"
            Dim ds3DPolyLine As PolyLine3D
            Dim dsHyperLink As HyperLink

            dsHyperLink = dsSketchManager.AttachLinkToArea(startCornerX, startCornerY, startCornerZ, oppositeCornerX, oppositeCornerY, oppositeCornerZ, hyperLinkAddress, description, ds3DPolyLine)
            dsCircle.SetHyperLink(dsHyperLink)

        Else

            MsgBox("There are no open documents in DraftSight.")

        End If
    End Sub


End Module