分享在winform下实现左右布局多窗口界面-续篇

之前的这篇文章《分享在winform下实现左右布局多窗口界面》已经实现了左右布局多窗口界面,今天本来是研究基于winform的插件编程,没想到顺便又找到了另一种实现方案,这种实现方案更简单,要写的代码也很少,具体实现如下。

可视化设计部份:

1.父窗口:ParentForm的IsMdiContainer 设置为 true,即:this.IsMdiContainer=true;

2.在父窗口中添加一个顶部菜单:menuStrip1,并新增一个菜单项:Windows,且将menuStrip1的MdiWindowListItem设置为该Windows菜单对象,即: this.menuStrip1.MdiWindowListItem = this.windowsToolStripMenuItem;

3.在父窗口中添加一个树形菜单:treeView1,并将其Dock设为左靠齐,即:this.treeView1.Dock = System.Windows.Forms.DockStyle.Left;且将margin设为0;

4.在父窗口中添加一个Panel:panel1,且将其width设为3;

以下是设计后自动生成的代码:

编码部份:

其实上面的设计后,如果通过以下定义的方法打开一个子窗口,则直接实现了左右布局且包含多子窗口的界面。

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private void ShowChildForm<TForm>() where TForm : Form, new()
{
    Form childForm = new TForm();
    childForm.MdiParent = this;
    childForm.Name = "ChildForm - " + DateTime.Now.Millisecond.ToString();
    childForm.Text = childForm.Name;
    childForm.Show();
}

当然仍然有不完美的地方,那就是左边菜单栏宽度不能动态调整,而又没有用到splitContainer,故我们只有自己来实现,其实也很简单,步骤如下: 

1.在父窗口构造函数中加入初始化panel1(用作分割器)位置及订阅相关事件,代码如下:

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public ParentForm()
{
    InitializeComponent();
 
    panel1.MouseDown += panel1_MouseDown;
    panel1.MouseUp += panel1_MouseUp;
    panel1.MouseMove += panel1_MouseMove;
 
    panel1.Top = menuStrip1.Height;
    panel1.Left = treeView1.Left + treeView1.Width;
    panel1.Height = panel1.Parent.Height;
}

上述代码的作用是:1.保证panel1的高度与位置与左侧树形菜单控件相匹配;2.订阅的三个Mouse事件主要是为了后面实现移动panel1。

2.实现订阅的三个Mouse事件所对应的方法,分别为鼠标按下、鼠标移动、鼠标松开,代码如下:

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private bool startMove = false; //用于标记是否在移动中
 
        void panel1_MouseMove(object sender, MouseEventArgs e)
        {
            if (startMove)
            {
                panel1.Left += e.X;
            }
        }
 
        void panel1_MouseUp(object sender, MouseEventArgs e)
        {
            if (startMove)
            {
                panel1.Left += e.X;
                startMove = false;
                this.treeView1.Width = panel1.Left;
            }
        }
 
        void panel1_MouseDown(object sender, MouseEventArgs e)
        {
            startMove = true;
        }

上述代码作用:按下鼠标标记为开始移动,然后移动鼠标,若是标记移动中,说明是要移动panel1,故直接将鼠标当前的X坐标位置累加到panel1.Left属性上,从而实现移动,当鼠标弹起后,则将树形菜单的宽度设置为panel1.Left,从而实现树形菜单随panel1的移动而改变大小。

同时为了保证panel1的高度始终与树形菜单相同,在父窗口的Resize方法加入动态调整panel1的高度,代码如下:

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private void ParentForm_Resize(object sender, EventArgs e)
{
    panel1.Height = panel1.Parent.Height;
}

到此就完成了整个的实现方案,为了便于模拟在树形菜单中双击打开子窗口的效果,同时也添加了如下代码:

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private void ParentForm_Load(object sender, EventArgs e)
{
    LoadMenuNodes();
}
 
 
private void LoadMenuNodes() //实现情况应该是从数据库及用户权限来进行动态创建菜单项
{
    this.treeView1.Nodes.Clear();
    var root = this.treeView1.Nodes.Add("Root");
    for (int i = 1; i <= 10; i++)
    {
        var section = root.Nodes.Add("Section-" + i);
        int maxNodes = new Random(i).Next(1, 10);
        for (int n = 1; n <= maxNodes; n++)
        {
            section.Nodes.Add(string.Format("Level-{0}-{1}", i, n));
        }
    }
}
 
 
private void treeView1_NodeMouseDoubleClick(object sender, TreeNodeMouseClickEventArgs e)
{
    if (e.Node.Nodes.Count <= 0)//当非父节点(即:实际的功能节点)
    {
        ShowChildForm<ChildForm>();
    }
}

上完整的实现代码

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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 WinFormTest
{
    public partial class ParentForm : Form
    {
        private bool startMove = false;
 
        public ParentForm()
        {
            InitializeComponent();
 
            panel1.MouseDown += panel1_MouseDown;
            panel1.MouseUp += panel1_MouseUp;
            panel1.MouseMove += panel1_MouseMove;
 
            panel1.Top = menuStrip1.Height;
            panel1.Left = treeView1.Left + treeView1.Width;
            panel1.Height = panel1.Parent.Height;
        }
 
        void panel1_MouseMove(object sender, MouseEventArgs e)
        {
            if (startMove)
            {
                panel1.Left += e.X;
            }
        }
 
        void panel1_MouseUp(object sender, MouseEventArgs e)
        {
            if (startMove)
            {
                panel1.Left += e.X;
                startMove = false;
                this.treeView1.Width = panel1.Left;
            }
        }
 
        void panel1_MouseDown(object sender, MouseEventArgs e)
        {
            startMove = true;
        }
 
        private void ParentForm_Load(object sender, EventArgs e)
        {
            LoadMenuNodes();
        }
 
 
 
        private void treeView1_NodeMouseDoubleClick(object sender, TreeNodeMouseClickEventArgs e)
        {
            if (e.Node.Nodes.Count <= 0)//当非父节点(即:实际的功能节点)
            {
                ShowChildForm<ChildForm>();
            }
        }
 
        private void ParentForm_Resize(object sender, EventArgs e)
        {
            panel1.Height = panel1.Parent.Height;
        }
 
        private void LoadMenuNodes() //实现情况应该是从数据库及用户权限来进行动态创建菜单项
        {
            this.treeView1.Nodes.Clear();
            var root = this.treeView1.Nodes.Add("Root");
            for (int i = 1; i <= 10; i++)
            {
                var section = root.Nodes.Add("Section-" + i);
                int maxNodes = new Random(i).Next(1, 10);
                for (int n = 1; n <= maxNodes; n++)
                {
                    section.Nodes.Add(string.Format("Level-{0}-{1}", i, n));
                }
            }
        }
 
 
        private void ShowChildForm<TForm>() where TForm : Form, new()
        {
            Form childForm = new TForm();
            childForm.MdiParent = this;
            childForm.Name = "ChildForm - " + DateTime.Now.Millisecond.ToString();
            childForm.Text = childForm.Name;
            childForm.Show();
        }
    }
}

最终效果如下图示:

 

说明:我这里为了体现分割器,故将其背景色设为红色,便于大家观察,这种解决方案与之前的解决方案功能上是相同的,但有一点小小区别,之前的解决方案中子窗口的标题栏是在父窗口的容器内,而本文的解决方案中子窗口在最大化后,子窗口的标题栏会与父窗口合并,如下图示,至于大家用哪种依实际场景。

后续时间我会继续研究winform关于插件式编程(近期工作任务要求),到时候同样会分享给大家,也欢迎大家一起交流,当然高手可以无视。

 

出处:https://www.cnblogs.com/zuowj/p/5225814.html

posted on 2022-09-20 11:44  jack_Meng  阅读(1072)  评论(0编辑  收藏  举报

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