Fire Events When Display State Changes Example (VB.NET)

This example shows how to fire the events related to changing display states of a configuration in an assembly document.

'---------------------------------------------------------------
' Preconditions: 
' 1. Open an assembly document that has a configuration with multiple
'    display states.
' 2. Run this macro in debug mode.
' 3. Change the display state of the active configuration in SOLIDWORKS
'    (click the ConfigurationManager tab and double-click
'    a different display state).
'
' Postconditions:
' 1. Displays a message box informing you that the display state is about to
'    change.
' 2. After the display state changes, displays another message informing you
'    that the display state has changed.
'
' NOTE: This example also fires these events when you change
' configurations in an assembly document.
'---------------------------------------------------------------
Option Explicit On

Imports SolidWorks.Interop.sldworks
Imports SolidWorks.Interop.swconst
Imports System
Imports System.Diagnostics
Imports System.Collections

Partial Class SolidWorksMacro

    Public WithEvents swAssem As AssemblyDoc

    Public Sub Main()

        Dim swModel As ModelDoc2
        Dim openAssem As Hashtable

        swModel = swApp.ActiveDoc

        'Set up events
        swAssem = swModel
        openAssem = New Hashtable
        AttachEventHandlers()

    End Sub

    Sub AttachEventHandlers()
        AttachSWEvents()
    End Sub

    Sub AttachSWEvents()
        AddHandler swAssem.ActiveDisplayStateChangePreNotify, AddressOf Me.swAssem_ActiveDisplayStateChangePreNotify
        AddHandler swAssem.ActiveDisplayStateChangePostNotify, AddressOf Me.swAssem_ActiveDisplayStateChangePostNotify
    End Sub

    Private Function swAssem_ActiveDisplayStateChangePreNotify() As Integer
    'Send message when user changes display state in the ConfigurationManager
        MsgBox("The active configuration's display state is about to change.")
    End Function

    Private Function swAssem_ActiveDisplayStateChangePostNotify(ByVal DisplayStateName As String) As Integer
    'Send message after user changes display state in the ConfigurationManager
        MsgBox("The active configuration's display state has changed.")
    End Function

    ''' <summary>
    ''' The SldWorks swApp variable is pre-assigned for you.
    ''' </summary>
    Public swApp As SldWorks

End Class