Capture Keydown event.

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using Microsoft.WindowsCE.Forms;

using System.Runtime.InteropServices;

namespace RegisterHotKey

{

    public partial class Form1 : Form

    {

        class MessageWin : MessageWindow

        {

#region p/invoke

            [DllImport("coredll.dll")]

            public static extern bool RegisterHotKey(IntPtr hWnd,      // Window handle

                int id,                                                                       // Hot key identifier

                int Modifiers,                                                            // Key-modifier options

                int key);                                                                    // Virtual-key code

            [DllImport("coredll.dll")]

            public static extern bool UnregisterHotKey(IntPtr hWnd, int id);

#endregion p/invoke

            // Event for client

            public System.EventHandler HotKeyPress;

            private int HotKeyId;

            public MessageWin(int id, int Modifier, int key)

            {

                // Register to listen for hot key

                HotKeyId = id;

                RegisterHotKey(this.Hwnd, id, Modifier, key);

            }

            ~MessageWin()

            {

                UnregisterHotKey(this.Hwnd, HotKeyId);

            }

            private const int WM_HOTKEY = 0x0312;

            protected override void WndProc(ref Message m)

            {

                if (m.Msg == WM_HOTKEY)

                {

                    // Raise event

                    if (HotKeyPress != null)

                        HotKeyPress(this, null);

                }

                base.WndProc(ref m);

            }

        }

        MessageWin msgWin = null;

        public enum KeyModifiers

        {

            None = 0,

            Alt = 1,

            Control = 2,

            Shift = 4,

            Windows = 8,

            Modkeyup = 0x1000,

        }

        public Form1()

        {

            InitializeComponent();

            this.Visible = false;

            msgWin = new MessageWin(0, (int)KeyModifiers.None, (int)Keys.F1);

            msgWin.HotKeyPress +=  new EventHandler(OnHotKeyPressEvent);

        }

        private void OnHotKeyPressEvent(object sender, System.EventArgs e)

        {

            MessageBox.Show("F1");

        }

    }

}