MDI Form detecting with a child form is added or removed

Question

Is there an event I can use to tell if a child form has been added or removed from the MDI parent?

Answer 1

I realised this is many years too late however as the answers here helped me solve this I though I would mention this works fine using the MdiChildren array in .net 4. The only thing you need to do is check if the form is disposing or disposed to tell if its closing.

ie:

    private void frmContainer_MdiChildActivate(object sender, EventArgs e)
    {
        tabWindows.RefreshLayout(this.MdiChildren.ToList());
    }

    public void RefreshLayout(List
 forms)
    {
        this.nextButtonLeft = 1;
        panel1.Controls.Clear();
        foreach (Form frm in forms)
        {
            if (!(frm.Disposing || frm.IsDisposed)) { addButton(frm); }
        }
    }