PdfMod.Gui.Client.ToggleMatchQuery C# (CSharp) Method

        public void ToggleMatchQuery ()
        {
            if (query_box.Entry.HasFocus) {
                query_box.Hide ();
            } else {
                query_box.Show ();
                query_box.Entry.GrabFocus ();
            }
        }

 void OnSelectMatching(object o, EventArgs args)
 {
     app.ToggleMatchQuery();
 }