[C#/WINFORM] Control 클래스 : WndProc 메소드를 사용해 COPY/PASTE/CUT 방지하기

TestProject.zip

다운로드

▶ CustomTextBox.cs

using System.Windows.Forms;

namespace TestProject
{
    /// <summary>
    /// 커스텀 텍스트 박스
    /// </summary>
    public class CustomTextBox : TextBox
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Field
        ////////////////////////////////////////////////////////////////////////////////////////// Private

        #region Field

        /// <summary>
        /// WM_PASTE
        /// </summary>
        private const int WM_PASTE = 0x0302;

        /// <summary>
        /// WM_COPY
        /// </summary>
        private const int WM_COPY = 0x0301;

        /// <summary>
        /// WM_CUT
        /// </summary>
        private const int WM_CUT = 0x0300;

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Static

        #region 윈도우 프로시저 처리하기 - WndProc(message)

        /// <summary>
        /// 윈도우 프로시저 처리하기
        /// </summary>
        /// <param name="message">메시지</param>
        protected override void WndProc(ref Message message)
        {
            if(message.Msg == WM_PASTE || message.Msg == WM_COPY || message.Msg == WM_CUT)
            {
            }
            else
            {
                base.WndProc(ref message);
            }
        }

        #endregion
    }
}