첨부 실행 코드는 나눔고딕코딩 폰트를 사용합니다.
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TestProject.zip
0.01MB

▶ MainWindow.xaml

<Window x:Class="TestProject.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Width="800"
    Height="600"
    Title="UIElement 클래스 : MouseDown/MouseMove/MouseUp 이벤트를 사용해 엘리먼트 이동시키기"
    FontFamily="나눔고딕코딩"
    FontSize="16">
    <Canvas>
        <Label Name="label" Canvas.Left="100" Canvas.Top="100"
            Padding="10"
            Background="Goldenrod"
            Content="Label" />
    </Canvas>
</Window>

 

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▶ MainWindow.xaml.cs

using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;

namespace TestProject
{
    /// <summary>
    /// 메인 윈도우
    /// </summary>
    public partial class MainWindow : Window
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Field
        ////////////////////////////////////////////////////////////////////////////////////////// Private

        #region Field

        /// <summary>
        /// 베이스 포인트
        /// </summary>
        private Point basePoint = new Point(0.0, 0.0);

        /// <summary>
        /// 엘리먼트 내 마우스 포인트
        /// </summary>
        private Point mousePointInElement;

        /// <summary>
        /// 델타 X
        /// </summary>
        private double deltaX = 0.0;

        /// <summary>
        /// 델타 Y
        /// </summary>
        private double deltaY = 0.0;

        /// <summary>
        /// 드래그 여부
        /// </summary>
        private bool isDragging = false;

        #endregion

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

        #region 생성자 - MainWindow()

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

            this.label.MouseDown += label_MouseDown;
            this.label.MouseMove += label_MouseMove;
            this.label.MouseUp   += label_MouseUp;
        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Private

        #region 레이블 마우스 DOWN 처리하기 - label_MouseDown(sender, e)

        /// <summary>
        /// 레이블 마우스 DOWN 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void label_MouseDown(object sender, MouseButtonEventArgs e)
        {
            Label label = e.Source as Label;

            if(label != null)
            {
                label.CaptureMouse();

                this.isDragging = true;

                this.mousePointInElement = e.GetPosition(label);
            }
        }

        #endregion
        #region 레이블 마우스 이동시 처리하기 - label_MouseMove(sender, e)

        /// <summary>
        /// 레이블 마우스 이동시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void label_MouseMove(object sender, MouseEventArgs e)
        {
            if(this.isDragging)
            {
                Point mousePoint = e.GetPosition(null);

                this.deltaX = mousePoint.X - this.basePoint.X - this.mousePointInElement.X;
                this.deltaY = mousePoint.Y - this.basePoint.Y - this.mousePointInElement.Y;

                Canvas.SetLeft(this.label, this.basePoint.X + this.deltaX);
                Canvas.SetTop (this.label, this.basePoint.Y + this.deltaY);
            }
        }

        #endregion
        #region 레이블 마우스 UP 처리하기 - label_MouseUp(sender, e)

        /// <summary>
        /// 레이블 마우스 UP 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void label_MouseUp(object sender, MouseButtonEventArgs e)
        {
            Label label = e.Source as Label;

            if(label != null)
            {
                label.ReleaseMouseCapture();

                this.basePoint.X += deltaX;
                this.basePoint.Y += deltaY;

                this.deltaX = 0.0;
                this.deltaY = 0.0;

                this.isDragging = false;
            }
        }

        #endregion
    }
}
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