Fire Events When Display State Changes Example (C#)

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.
//---------------------------------------------------------------
using SolidWorks.Interop.sldworks;
using SolidWorks.Interop.swconst;
using System;
using System.Collections;
using System.Windows.Forms;

namespace Macro1.csproj
{
    public 
 partial class SolidWorksMacro

    {

        public AssemblyDoc swAssem;
        public void Main()

        {

            ModelDoc2 swModel;
            Hashtable openAssem;
            swModel = (ModelDoc2)swApp.ActiveDoc;

            //Set up events
            swAssem = (AssemblyDoc)swModel;
            openAssem = new Hashtable();
            AttachEventHandlers();

        }

        /// <summary>
        ///  The SldWorks swApp variable is pre-assigned for you.
        /// </summary>
        public SldWorks swApp;

        public void AttachEventHandlers()
        {
            AttachSWEvents();
        }

        public void AttachSWEvents()
        {
            swAssem.ActiveDisplayStateChangePreNotify += this.swAssem_ActiveDisplayStateChangePreNotify;
            swAssem.ActiveDisplayStateChangePostNotify += this.swAssem_ActiveDisplayStateChangePostNotify;
        }

        public int swAssem_ActiveDisplayStateChangePreNotify()
        //Send message when user changes display state in the ConfigurationManager
        {
            MessageBox.Show("The active configuration's display state is about to change.");
            return 1;
        }

        public int swAssem_ActiveDisplayStateChangePostNotify(string DisplayStateName)
        //Send message after user changes display state in the ConfigurationManager
        {
            MessageBox.Show("The active configuration's display state has changed.");
            return 1;
        }

    }
}