//===============================================================================
// Microsoft patterns & practices
// Web Service Software Factory
//===============================================================================
// Copyright  Microsoft Corporation.  All rights reserved.
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY
// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT
// LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
// FITNESS FOR A PARTICULAR PURPOSE.
//===============================================================================
// The example companies, organizations, products, domain names,
// e-mail addresses, logos, people, places, and events depicted
// herein are fictitious.  No association with any real company,
// organization, product, domain name, email address, logo, person,
// places, or events is intended or should be inferred.
//===============================================================================

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

namespace Howest.Guidance.DataAccess.CustomWizardPages.UI
{
    internal class ListBoxEx : ListBox
    {
        int index = -1;

        protected override void OnSelectedIndexChanged(EventArgs e)
        {
            if(this.SelectionMode == SelectionMode.One)
            {
                if(this.SelectedIndex != -1)
                {
                    if(this.SelectedIndex == index)
                    {
                        index = -1;
                        this.SelectedIndex = index;
                    }
                    else
                    {
                        index = this.SelectedIndex;
                    }

                    base.OnSelectedIndexChanged(e);
                }
            }
            else
            {
                base.OnSelectedIndexChanged(e);
            }
        }
    }
}
