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 PreFilterMessage. How do I receive clicks outside a form’s window?

Answer 1

With thanks to p-daddy in this question, I’ve found this solution which allows me to use ShowDialog:

protected override void OnShown(EventArgs e) {     base.OnShown(e);     this.Capture = true; }  protected override void OnCaptureChanged(EventArgs e) {     if (!this.Capture)     {         if (!this.RectangleToScreen(this.DisplayRectangle).Contains(Cursor.Position))         {             this.Close();         }         else         {             this.Capture = true;         }     }      base.OnCaptureChanged(e); }