[C#/WINFORM] Form 클래스 : 클라이언트 영역에서 폼 드래그하기

TestProject.zip

0.01MB

▶ MainForm.cs

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

namespace TestProject
{
    /// <summary>
    /// 메인 폼
    /// </summary>
    public partial class MainForm : Form
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Field
        ////////////////////////////////////////////////////////////////////////////////////////// Private

        #region Field

        /// <summary>
        /// 마우스 DOWN 여부
        /// </summary>
        private bool isMouseDown;

        /// <summary>
        /// 마지막 마우스 포인트
        /// </summary>
        private Point lastMousePoint;

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 생성자 - MainForm()

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

            MouseDown += Form_MouseDown;
            MouseMove += Form_MouseMove;
            MouseUp   += Form_MouseUp;
        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Protected

        #region 폼 마우스 DOWN 처리하기 - Form_MouseDown(sender, e)

        /// <summary>
        /// 폼 마우스 DOWN 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void Form_MouseDown(object sender, MouseEventArgs e)
        {
            this.isMouseDown = true;

            this.lastMousePoint = e.Location;
        }

        #endregion
        #region 폼 마우스 이동시 처리하기 - Form_MouseMove(sender, e)

        /// <summary>
        /// 폼 마우스 이동시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void Form_MouseMove(object sender, MouseEventArgs e)
        {
            if(isMouseDown)
            {
                this.Location = new Point
                (
                    (Location.X - this.lastMousePoint.X) + e.X,
                    (Location.Y - this.lastMousePoint.Y) + e.Y
                );

                Update();
            }
        }

        #endregion
        #region 폼 마우스 UP 처리하기 - Form_MouseUp(sender, e)

        /// <summary>
        /// 폼 마우스 UP 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void Form_MouseUp(object sender, MouseEventArgs e)
        {
            this.isMouseDown = false;
        }

        #endregion
    }
}