无法在C＃中为面板创建布局

Question

我想创建一个布局管理器，它将面板划分为单元格，并且可以将一个组件添加到面板中，指定单元格（行，列）。 在重新调整面板大小时应更新单元格的宽度和高度（这是问题，它不会重新调整单元格的大小）。 这些类本身可以工作，但是当调整大小时它不会更新单元格大小，它甚至似乎都没有调用LayoutManager::SetBounds(int, int) 。 我之所以创建一个单独的类，是因为我将使用相同的布局管理器来处理其他容器，例如GroupBox 。 这是我的代码

public class Insets
{
    public int bottom = 0;
    public int top = 0;
    public int left = 0;
    public int right = 0;

    public Insets(int top, int left, int bottom, int right) {
        this.top = top;
        this.left = left;
        this.bottom = bottom;
        this.right = right;
    }
}

/*
*  LayoutManager class
*/

using System;
using System.Drawing;
using System.Windows.Forms;
using System.Collections.Generic;



public class LayoutManager
{
    public enum Constraints{
        HORIZONTAL,
        VERTICAL,
        NONE
    };

    public Insets insets = new Insets(0, 0, 0, 0);
    public Constraints fill = Constraints.NONE;
    public Panel container = null;
    public int cellheight = 1;
    public int cellwidth = 1;

    private List <int> indices = new List <int>();
    private int columns = 1;
    private int rows = 1;
    private int dh = 0;
    private int dw = 0;

    public LayoutManager(){
    }
    private int Index2DTo1D(int row, int column){
        return (column + (row * columns));
    }
    private int Index1DToRow2D(int index){
        return index / columns;
    }
    private int Index1DToColumn2D(int index){
        return index / rows;
    }
    private void SetGridMatrix(int rows, int columns) {
        if (rows >= this.rows){
            this.rows = rows + 1;
        }
        if (columns >= this.columns){
            this.columns = columns + 1;
        }
    }
    public void RepaintChildrenComponents() {
        if(container != null){
            foreach(Control control in container.Controls){
                ((CheckBox)control).Text = container.Width.ToString();
            }       
        }
    }
    public void SetBounds(int width, int height) {
        SetCellsDimensions(width, height);
        RepaintChildrenComponents();
    }
    public void SetCellsDimensions(int width, int height){
        this.dw = width / columns;
        this.dh = height / rows;
    }
    public void SetContainer(ref Panel container) {
        this.container = container;
    }
    public Point GetChildComponentXY(int x, int y){
        if(x >= 0 && y >= 0){
            return new Point((x * dw) + insets.right, (y * dh) + insets.top);
        }
        throw new System.ArgumentOutOfRangeException("");
    }
    public Size GetComputedComponentSize(){
        return new Size((cellwidth * dw) - (insets.left + insets.right),
                        (cellheight * dh) - (insets.top + insets.bottom));            
    }
    public void AddComponent(Control control, Point location, LayoutManager.Constraints fill){
        if(container != null && control != null){
            indices.Insert(container.Controls.Count, Index2DTo1D(location.X, location.Y));
            container.Controls.Add(SetChildComponentBounds(control, location));
            SetGridMatrix(location.X, location.Y);
            SetCellsDimensions(container.Width, container.Height);
        }else{
            throw new NullReferenceException("");
        }
    }
    protected Control SetChildComponentBounds(Control control, Point location) {
        control.Location = GetChildComponentXY(location.X, location.Y);
        control.Size = GetComputedComponentSize();
        return control;
    }
    public void AddComponent(Control control, Point location){
        AddComponent(control, location, LayoutManager.Constraints.NONE);
    }
}

/*
*
* JPanel class
*/


using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using System.Windows.Forms;


class JPanel : Panel
{
    private LayoutManager layman;

    public JPanel(){
        layman = new JComponent.LayoutManager();

        Panel container = this;
        layman.SetContainer(ref container);


        string[] elems = { "Multiplication", "Division", "Addition", "Subtraction"};
        int e = 0;

        this.Size = new Size(300, 125);

        foreach(string str in elems){

            CheckBox box = new CheckBox();
            box.Text = str;
            layman.AddComponent(box, new Point(0, e++));
            //this.Controls.Add(box);
        }

    }
    public JPanel(LayoutManager layman) {
        LayoutManager = layman;
    }

    protected override void SetBoundsCore(int x, int y, int width, int height, BoundsSpecified specified){
        if(layman != null){
            layman.SetBounds(width, height);
        }
        base.SetBoundsCore(x, y, width, height, specified);
    }
    public LayoutManager LayoutManager{
        set{
            layman = value;
        }
        get{
            return layman;
        }
    }
}

Answer 1

请看一下TableLayoutPanel类。 我认为这种控制正是你正在努力实现的目标。 TableLayoutPanel允许您在表单编辑器中以编程方式定义行/列，将控件放在单元格内，合并行/列，根据内容自动调整面板或根据面板大小自动调整内容。

这是一个非常有趣的文档，关于如何在Windows窗体中进行布局：

https://docs.google.com/viewer?a=v&q=cache:nePz-uaPReYJ:www.windowsclient.net/samples/go%2520to%2520market/layout/layoutgtm.doc+Whidbey+Layout+tablelayoutpanel&hl=de&gl=德＆PID = BL＆srcid = ADGEEShlobh-RfSTegC1NuOc72m0vRPu6RsF3USTSPnSasU-9qSklTbJzclRol6Nxg5sxEUXZOWYZwgrSdZdAjJ5EXhCft7qj5jBr4-kkkX6380-0itVaHkG-TAvK4KvNtDymEFlUXM6＆SIG = AHIEtbTnyasKOG5tuZwub59LBw8UeZL8Lg

不幸的是，我只能通过谷歌搜索缓存找到文档。 原始链接似乎被删除。