WINFORM学习手册——Mdi应用（窗体布局）

一、打开上一章的项目，配置窗体菜单如下图：

二、选择菜单，更属性MdiWindowListItem为windowToolStripMenuItem，这样可以实现打开多个子窗体后，会在Window菜单下显示

三、双击菜单项（Cascade、The Horizontally、The Vertically），写入单击事件：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Mdi
{
    public partial class MainForm : Form
    {
        public MainForm()
        {
            InitializeComponent();
        }
        /// <summary>
        /// 创建子窗体
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void newToolStripMenuItem_Click(object sender, EventArgs e)
        {
            ChildForm childForm = new ChildForm();
            childForm.MdiParent = this;
            childForm.Show();
        }
        /// <summary>
        /// 层叠布局
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void cascadeToolStripMenuItem_Click(object sender, EventArgs e)
        {
            this.LayoutMdi(MdiLayout.Cascade);
        }
        /// <summary>
        /// 横向布局            
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void theHorizontallyToolStripMenuItem_Click(object sender, EventArgs e)
        {
            this.LayoutMdi(MdiLayout.TileHorizontal);
        }
        /// <summary>
        /// 竖向布局
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void theVerticallyToolStripMenuItem_Click(object sender, EventArgs e)
        {
            this.LayoutMdi(MdiLayout.TileVertical);
        }
    }
}

执行：

多个子窗体，会在Window菜单项下面显示：

 

 

层叠布局：

横向布局：

竖向布局：