C# 带滚动栏的Label控件

C# 带滚动栏的Label控件，用鼠标选的时候还是有点闪烁：

namespace 带滚动栏的Label控件

{

    public class TextBoxLabel : System.Windows.Forms.TextBox

    {

        [DllImport("user32", EntryPoint = "HideCaret")]

        private static extern bool HideCaret(IntPtr hWnd);

        [DllImport("user32", EntryPoint = "ShowCaret")]

        private static extern bool ShowCaret(IntPtr hWnd);

        public TextBoxLabel():base(){

            this.TabStop = false;

            this.SetStyle(ControlStyles.Selectable, false);

            this.Cursor = Cursors.Default;

            this.ReadOnly = true;

            this.ShortcutsEnabled = false;

            this.HideSelection = true;

            this.GotFocus += new EventHandler(TextBoxLabel_GotFocus);

            this.MouseMove += new MouseEventHandler(TextBoxLabel_MouseMove);

        }

        private void TextBoxLabel_GotFocus(Object sender, System.EventArgs e){

            if (ShowCaret(((TextBox)sender).Handle)){

                HideCaret(((TextBox)sender).Handle);

            }

        }

        private void TextBoxLabel_MouseMove(Object sender, MouseEventArgs e){

            if (((TextBox)sender).SelectedText.Length > 0){

                ((TextBox)sender).SelectionLength = 0;

            }

        }

    }

}

效果：

实现思路及用途參考：http://bbs.csdn.net/topics/390632325?page=1#post-398542672