C# WinForms Application Full Integration with HTMLHelp ( .chm ) - Help Topics, Context Sensitive Help, and Tooltips

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

using WinHelpLib;


namespace WinHelpTest
{
    public partial class MainForm : Form
    {

        public WinHelpEx.HELP_CTRL_USE GetControlName(Control ctrl, ref string sName)
        {
            if (ctrl == btnHelp)
            {
                sName = "ButtonHelp";
                return WinHelpEx.HELP_CTRL_USE.USE_NO_SUB;
            }

            sName = "";
            return WinHelpEx.HELP_CTRL_USE.USE_SUB;
        }
        public WinHelpEx.HELP_CTRL_USE IsControlUsed(Control ctrl)
        {
            return WinHelpEx.HELP_CTRL_USE.USE_SUB;
        }

        public WinHelpEx.HELP_CTRL_USE IsControlTTUsed(Control ctrl)
        {
            if (ctrl == this)
            {
                return WinHelpEx.HELP_CTRL_USE.USE_SUB;
            }
            return WinHelpEx.HELP_CTRL_USE.USE_SUB;
        }


        Boolean IsCSHelpDlgt(Control ctrl)
        {
            if (ctrl == tvHF || ctrl == cbHC || ctrl == this)
            {
                return false;
            }
            return true;
        }

        public MainForm()
        {
            InitializeComponent();

            try
            {

                Program.s_help.TestITSS(tvHF);

                Program.s_help.AttachForm(null, this, true, IsControlUsed, GetControlName, IsCSHelpDlgt, IsControlTTUsed, GetControlName);

            }
            catch (Exception exc)
            {
                MessageBox.Show(exc.Message);
            }

            object[] arr = new[]
            {
                new { Text = "TableOfContents", Data = HelpNavigator.TableOfContents },
                new { Text = "Topic", Data = HelpNavigator.Topic },
                new { Text = "TopicId", Data = HelpNavigator.TopicId },
                new { Text = "Index", Data = HelpNavigator.Index },
                new { Text = "Find", Data = HelpNavigator.Find },
                new { Text = "AssociateIndex", Data = HelpNavigator.AssociateIndex },
                new { Text = "KeywordIndex", Data = HelpNavigator.KeywordIndex }
            };

            cbHC.DisplayMember = "Text";
            cbHC.ValueMember = "Data";
            cbHC.DataSource = arr;

        }

        private void btnHelp_Click(object sender, EventArgs e)
        {
            Program.s_help.ShowHelp(this,(HelpNavigator)cbHC.SelectedValue, tbKW.Text);
        }

        private void MainForm_HelpRequested(object sender, HelpEventArgs hlpevent)
        {

        }
    }
}