using System; using System.Collections.Generic; using System.ComponentModel; using System.Drawing; using System.Data; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace NotePad.CustomerControls { public partial class AutoButtomRichTextBox : RichTextBox { public AutoButtomRichTextBox() { InitializeComponent(); } protected override CreateParams CreateParams { get { CreateParams cp = base.CreateParams; cp.ExStyle |= 0x20; return cp; } } } }