Context Help Made Easy

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

namespace ContextHelpMadeEasy
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            //add message filter
            MessageFilter oFilter = new MessageFilter();
            System.Windows.Forms.Application.AddMessageFilter((IMessageFilter)oFilter);

            Application.Run(new FTestApplication());
        }
    }

    internal class MessageFilter : IMessageFilter
    {
        bool IMessageFilter.PreFilterMessage(ref Message m)
        {
            switch (m.Msg)
            {
                case 0x100: //MSG.WM_KEYDOWN
                    if ((int)m.WParam == (int)Keys.F1)
                    {
                        // Call the help handler.
                        HelpUtility.ProcessHelpRequest(Control.FromHandle(m.HWnd));
                        return true;
                    }
                    break;
            }
            return false;
        }
    }
}