publicForm parentForm;    

        privatebool inited;       

        public ctor(Form parent)

            : this()

        {

            parentForm = parent;

        }

        protectedoverridevoid OnClosing(CancelEventArgs e)

        {

            if (parentForm != null)

            {

                parentForm.Location = this.Location;

                parentForm.Show();

            }

            base.OnClosing(e);

        }

        protectedoverridevoid OnActivated(EventArgs e)

        {

            if (!inited)

            {

                inited = true;

                parentForm.Hide();

            }

            base.OnActivated(e);

        }

        protectedoverridevoid OnLoad(EventArgs e)

        {

            if (parentForm != null)

            {

                if (Environment.OSVersion.Platform == PlatformID.WinCE)

                {

                    this.FormBorderStyle = FormBorderStyle.None;

                    this.ControlBox = false;

                }

                else

                {

                    bool tmp = this.Visible;

                    this.Visible = false;

                    this.FormBorderStyle = FormBorderStyle.FixedSingle;

                    this.ControlBox = true;

                    this.MaximizeBox = false;

                    this.MinimizeBox = true;

                    this.Visible = tmp;

                }

                this.Location = parentForm.Location;

                this.Size = parentForm.Size;

            }

            base.OnLoad(e);

        }