[C#/WINFORM] 타원 버튼 그리기

TestProject.zip

다운로드

▶ MainForm.cs

using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;

namespace TestProject
{
    /// <summary>
    /// 메인 폼
    /// </summary>
    public partial class MainForm : Form
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 생성자 - MainForm()

        /// <summary>
        /// 생성자
        /// </summary>
        public MainForm()
        {
            InitializeComponent();

            ResizeRedraw = true;

            #region 이벤트를 설정한다.

            Paint += Form_Paint;

            #endregion
        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Private
        //////////////////////////////////////////////////////////////////////////////// Event

        #region 폼 페인트시 처리하기 - Form_Paint(sender, e)

        /// <summary>
        /// 폼 페인트시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void Form_Paint(object sender, PaintEventArgs e)
        {
            e.Graphics.Clear(BackColor);

            e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;

            Rectangle rectangle = new Rectangle
            (
                30,
                30,
                ClientSize.Width  - 60,
                ClientSize.Height - 60
            );

            using(LinearGradientBrush brush = new LinearGradientBrush(rectangle, Color.Lime, Color.DarkGreen, 225f))
            {
                e.Graphics.FillEllipse(brush, rectangle);
            }

            using(LinearGradientBrush brush = new LinearGradientBrush(rectangle, Color.Lime, Color.DarkGreen, 45f))
            {
                using(Pen pen = new Pen(brush, 20f))
                {
                    rectangle.X      += 10;
                    rectangle.Y      += 10;
                    rectangle.Width  -= 20;
                    rectangle.Height -= 20;

                    e.Graphics.DrawEllipse(pen, rectangle);
                }
            }
        }

        #endregion
    }
}