using System;
using System.Collections;
using System.Collections.Generic;
using System.Windows.Forms;

// AutoCAD Specific
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.EditorInput;

using AcadApp = Autodesk.AutoCAD.ApplicationServices.Application;
using DatabaseServ = Autodesk.AutoCAD.DatabaseServices;
using TransMan = Autodesk.AutoCAD.DatabaseServices.TransactionManager;

[assembly: ExtensionApplication(typeof(CLDesign.CLDesignExtApp))]

namespace CLDesign
{
	public class CLDesignExtApp : IExtensionApplication
	{
		public static CLDwgManager CLAppDwgMan;

		public void Initialize()
		{
			CLAppDwgMan = new CLDwgManager();
			AcadApp.SystemVariableChanged += new Autodesk.AutoCAD.ApplicationServices.SystemVariableChangedEventHandler(AcadApp_SystemVariableChanged);
		}

		public void Terminate()
		{
			CLAppDwgMan.Release();
			AcadApp.SystemVariableChanged -= new Autodesk.AutoCAD.ApplicationServices.SystemVariableChangedEventHandler(AcadApp_SystemVariableChanged);
		}

		private void AcadApp_SystemVariableChanged(Object sender, Autodesk.AutoCAD.ApplicationServices.SystemVariableChangedEventArgs e)
		{
			if (e.Name == "CVPORT")
			{
				Document doc = AcadApp.DocumentManager.MdiActiveDocument;
				Editor editor = doc.Editor;
				editor.WriteMessage("\n{0} = {1}", e.Name, AcadApp.GetSystemVariable(e.Name));
			}
		}
	} // END CLASS
}