C#開発例～カスタムカーソルとQQスクリーンショット撮影時のカーソルを使ったカスタマイズスクリーンショットツール（9）（写真）

        #region 自定义光标
        System.Windows.Forms.Cursor cursorCross = null;
        System.Windows.Forms.Cursor cursorDefault = null;
        System.Windows.Forms.Cursor cursorText = null;
        System.Windows.Forms.Cursor cursorColor = null;
        #endregion

        [DllImport("user32.dll")]
        private static extern IntPtr LoadCursorFromFile(string fileName);

        /// <summary>
        /// 从已有资源中获得光标
        /// </summary>
        /// <param name="resource"></param>
        /// <returns></returns>
        public static Cursor getCursorFromResource(byte[] resource)
        {
            byte[] b = resource;
            FileStream fileStream = new FileStream("cursorData.dat", FileMode.Create);
            fileStream.Write(b, 0, b.Length);
            fileStream.Close();
            Cursor cur = new Cursor(LoadCursorFromFile("cursorData.dat"));
            return cur;
        }

        /// <summary>
        /// 窗口初始化事件处理程序
        /// </summary>
        private void Form1_Init()
        {
            this.isCuting = false;
            this.beginPoint = new Point(0, 0);
            this.endPoint = new Point(0, 0);

            cursorDefault = getCursorFromResource(Properties.Resources.Cursor_Default);
            cursorCross = getCursorFromResource(Properties.Resources.Cursor_Cross);
            cursorText = getCursorFromResource(Properties.Resources.Cursor_Text);
            cursorColor = getCursorFromResource(Properties.Resources.Cursor_Color);
        }

        /// <summary>
        /// 鼠标进入Form1窗体事件处理程序
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Form1_MouseEnter(object sender, EventArgs e)
        {
            this.Cursor = cursorDefault;
        }

Form1_Init();