C# WinForm VS2005 动态添加并拖动控件

最新推荐文章于 2023-09-14 15:49:57 发布

YanpingLuck

最新推荐文章于 2023-09-14 15:49:57 发布

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分类专栏：随笔文章标签： winform c# object button

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本文介绍了一个简单的Windows窗体应用程序示例，演示如何创建可拖动的Label控件。通过鼠标点击并拖动Label，可以改变其位置。此示例使用C#语言实现。

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Point lastPoint;



        public Form2()

        {

            InitializeComponent();

        }



        private void button1_Click(object sender, EventArgs e)

        {

            Label labNew = new Label();

            labNew.Name = "aaa";

            labNew.Text = "新标签";

            this.Controls.Add(labNew);

            labNew.MouseDown +=new MouseEventHandler(labNew_MouseDown);

            labNew.MouseMove +=new MouseEventHandler(labNew_MouseMove);

        }



        private void labNew_MouseDown(object sender, MouseEventArgs e)

        {

            if (e.Button == MouseButtons.Left)

                lastPoint = e.Location;

        }



        private void labNew_MouseMove(object sender, MouseEventArgs e)

        {

            if (e.Button == MouseButtons.Left)

            {

                Label l = (Label)sender;

                l.Location = new Point(l.Location.X + e.Location.X - lastPoint.X,

                                                l.Location.Y + e.Location.Y - lastPoint.Y);

            }

        }