分隔器控件使用示例PanelWithSplitter

最新推荐文章于 2020-12-01 09:34:17 发布

原创最新推荐文章于 2020-12-01 09:34:17 发布 · 660 阅读

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本文介绍了一个使用 C# 实现的简单窗体应用程序示例，该示例展示了如何利用 Splitter 控件调整两个面板的比例。通过拖动中间的分隔器，可以动态改变左右两个面板的宽度。

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Code:

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

namespace CsDev
{
    class PanelWithSplitter : Form
    {
        float fproportion = 0.5f;
        Panel panel2;
        public static void Main()
        {
            Application.Run(new PanelWithSplitter());
        }
        public PanelWithSplitter()
        {
            Text = "分隔器控件使用示例";

            Panel panel = new Panel();
            panel.Parent = this;
            panel.Dock = DockStyle.Fill;
            panel.BackColor = Color.Red;
            panel.Resize += new EventHandler(panel_Resize);
            panel.Paint += new PaintEventHandler(panel_Paint);

            Splitter split = new Splitter();
            split.Parent = this;
            split.Dock = DockStyle.Left;
            split.SplitterMoving+=new SplitterEventHandler(split_SplitterMoving);

            panel2 = new Panel();
            panel2.Parent = this;
            panel2.Dock = DockStyle.Left;
            panel2.BackColor = Color.Lime;
            panel2.Resize += new EventHandler(panel_Resize);
            panel2.Paint += new PaintEventHandler(panel_Paint);

            OnResize(EventArgs.Empty);
        }

        protected override void OnResize(EventArgs e)
        {
            base.OnResize(e);
            panel2.Width = (int)(fproportion * ClientSize.Width);
        }

        void panel_Resize(object obj, EventArgs e)
        {
            ((Panel)obj).Invalidate();//使面板区域重绘
        }
        void split_SplitterMoving(object obj, SplitterEventArgs e)
        {
            fproportion = (float)e.SplitX / ClientSize.Width;
        }
        void panel_Paint(object obj, PaintEventArgs e)
        {
            Panel panel = (Panel)obj;
            Graphics grph = e.Graphics;

            grph.DrawEllipse(Pens.Black,0,0,panel.Width-1,panel.Height-1);
        }
    }
}

效果图: