c# Arranging MDI Child forms

[aparsons]

I have an MDI application in which I want the user to drag the child forms to put them in order. I will have to write some mouse handling code for that I know. However when you click on the child forms, before you even capture the mouse , they change their order! I want them to stay still and move only when the code tells them to.
Try it! Just put this code into a default form1 - I'm using C# Express 2008. Then click on a child form and watch it jump to the bottom - slippery little devil.



using System;
using System.Text;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
for (int ii = 1; ii < 5; ii++)
{
Form cForm = new Form();
cForm.MdiParent=this;
cForm.Dock = DockStyle.Top;
cForm.Size = new Size(120, 40);
cForm.Text = "Child " + ii.ToString();
cForm.MouseDown += new MouseEventHandler(cForm_MouseDown);
cForm.Show();
}
}

void cForm_MouseDown(object sender, MouseEventArgs e)
{
MessageBox.Show("Mouse Down");
}
}
}

I want the child forms to stay still and the mouse click to simply trigger the Event handler.

Any help greatly appreciated,
Andrew Parsons