HotKeyRegistration and FormStartPosition/FormWindowState

Hi there,

I have weired problem with the registration of a HotKey and the FormStartPosition / Form WindowState:
Everything works fine, until I set the FormStartPosition to CenterScreen and/or the FormWindowState to Minimized.

Can somebody tell me why
To illustrade my problem, I have written a smoll programm that shows my problem. It consitst out of two classes:

First: MainForm:
It instanciates an object of Class HotKey and sets the startup behavior:
MainForm:
using System;
using System.Drawing;
using System.Windows.Forms;
namespace HotKey

{

public class MainForm : System.Windows.Forms.Form
{

public MainForm()
{
HotKey HK = new HotKey();
InitializeComponent();
}//Constructor

[STAThread]
public static void Main(string[] args)
{
Application.Run(new MainForm());
}//Main

private void InitializeComponent() {
//
// MainForm
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 266);
this.Name = "MainForm";
this.Text = "MainForm";
//this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
//this.WindowState = System.Windows.Forms.FormWindowState.Minimized;
}

}//Class

}//Namespace

Second: HotKey:
It registeres the HotKey and works fine until I uncomment the two concering line in the MainForm-Class:
HotKey:
using System;
using System.Drawing;
using System.Windows.Forms;
using System.Runtime.InteropServices;
namespace HotKey

{
/// <summary>
/// http://www.codekeep.net/snippets/ea68475b-c33e-4a71-8008-90f63d7e918d.aspx
/// http://www.csharphelp.com/board2/read.html f=1&i=33914&t=33899
/// </summary>

public class HotKey : System.Windows.Forms.Form
{

//////////////////////////////////////////////////////////////
#region API Imports
[DllImport("user32.dll", SetLastError = true)]
public static extern bool RegisterHotKey(
IntPtr hWnd, // handle to window
int id, // hot key identifier
KeyModifiers fsModifiers, // key-modifier options
Keys vk // virtual-key code
);

[DllImport("user32.dll", SetLastError = true)]
public static extern bool UnregisterHotKey(
IntPtr hWnd, // handle to window
int id // hot key identifier
);
#endregion
//////////////////////////////////////////////////////////////

const int HOTKEY_ID = 31197; //any number to be used as an id within this app
const int WM_HOTKEY = 0x0312; //The number WndProc() waits for

public HotKey()
{
//set hotkey on [ALT + F11]
RegisterHotKey(Handle, HOTKEY_ID, KeyModifiers.Alt, Keys.F11);
}//Constructor

public enum KeyModifiers
{
None = 0,
Alt = 1,
Control = 2,
Shift = 4,
Windows = 8
}//KeyModifiers

//having registered a hotkey the thread that registered it
//receives a WM_HOTKEY message upon the keypress which has to
//be caught by overwriting the WndProc method
protected override void WndProc(ref Message m)
{
// Listen for operating system messages.
if(m.Msg == WM_HOTKEY)
MessageBox.Show("OK");
base.WndProc(ref m);
}//WndProc

public void ReleaseHotKey()
{
//reset hotkey if exit
UnregisterHotKey(Handle, HOTKEY_ID);
}//ReleaseHotKey

}

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