How do I close a form when a user clicks outside the form's window?

Question

I want to close a System.Windows.Forms.Form if the user clicks anywhere outside it. I\'ve tried using IMessageFilter, but even then none of the messages are passed to PreFi

Answer 1

this is simple :

private void button1_Click(object sender, EventArgs e)
    {
        Form f = new Form();
        f.LostFocus +=new EventHandler(f_LostFocus);
        f.Show();
    }

    void f_LostFocus(object sender, EventArgs e)
    {
        Form f = sender as Form;
        f.Close();
        f.Dispose();
    }