博客

using System;

using System.Collections.Generic;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace WindowsFormsApp1

{


public class FormResize

{

    public List<controlRect> oldCtrls = new List<controlRect>();
    public float OldFormWidth;
    public float OldFormHight;
    public float wScale;//宽比
    public float hScale;  //高比
    public struct controlRect
    {
        public int Left;
        public int Top;
        public int Width;
        public int Height;
        public float FontSize;
        public string ConName;

    }
    public void SetContorlRect(Control form)
    {
        if (form is Form)
        {
            OldFormWidth = form.Width;
            OldFormHight = form.Height;
        } 
        controlRect OldSet = new controlRect();
         
        foreach (Control cR in form.Controls)
        {

            OldSet.Left = cR.Left;
            OldSet.Top = cR.Top;
            OldSet.Width = cR.Width;
            OldSet.Height = cR.Height;
            OldSet.FontSize = cR.Font.Size;
            OldSet.ConName = cR.Name;
            if (cR.Controls.Count > 0)
            {
                SetContorlRect(cR);
            }
            oldCtrls.Add(OldSet);

        }
       // MessageBox.Show("fafa");
    }
    public void SetResizeFloat(Form mForm)
    {
        wScale = (float)mForm.Width / OldFormWidth;//新旧窗体之间的比例，与最早的旧窗体  
        hScale = (float)mForm.Height / OldFormHight;//.Height;  
    }
    public void SetResize(Control form)
    { 
        
       
            foreach (Control oneControl in form.Controls)
            {
                controlRect OneRect = new controlRect();
                 OneRect = oldCtrls.Where(x => x.ConName == oneControl.Name).FirstOrDefault();
                 if (OneRect.Height != 0)
                {

                    if (oneControl.Controls.Count > 0)
                    {

                     SetResize(oneControl);//窗体内其余控件还可能嵌套控件(比如panel),要单独抽出,因为要递归调用
                     oneControl.Left = (int)(OneRect.Left * wScale);//新旧控件之间的线性比例。控件位置只相对于窗体，所以不能加 + wLeft1  
                     oneControl.Top = (int)(OneRect.Top * hScale);//  
                     oneControl.Width = (int)(OneRect.Width * wScale);//只与最初的大小相关，所以不能与现在的宽度相乘 (int)(c.Width * w);  
                     oneControl.Height = (int)(OneRect.Height * hScale);//
                    oldCtrls.Remove(OneRect);
                    
                }
                    else
                    {
                        Single currentSize = Convert.ToSingle(OneRect.FontSize * wScale);
                        oneControl.Left = (int)(OneRect.Left * wScale);//新旧控件之间的线性比例。控件位置只相对于窗体，所以不能加 + wLeft1  
                        oneControl.Top = (int)(OneRect.Top * hScale);//  
                        oneControl.Width = (int)(OneRect.Width * wScale);//只与最初的大小相关，所以不能与现在的宽度相乘 (int)(c.Width * w);  
                         oneControl.Height = (int)(OneRect.Height * hScale);//
                        oneControl.Font = new Font(oneControl.Font.Name, currentSize, oneControl.Font.Style, oneControl.Font.Unit);
                       oldCtrls.Remove(OneRect);
                     }
                 }   

            }


    }

    /// <summary>
    /// 窗口改变size后的变动
    /// </summary>
    public void SetResizeInput(Form Form)
    {
        SetResizeFloat(Form);
        SetResize(Form);
        SetContorlRect(Form);
    }
}

}

//使用方法

public partial class Form1 : Form

{

    //AutoSizeFormClass asc = new AutoSizeFormClass();
    FormResize asc = new FormResize();

   
    public Form1()
    {
        InitializeComponent();
        asc.SetContorlRect(this);//加入最初的大小
    
        this.Resize += new EventHandler(MyForm_Resize);
    }



    private void MyForm_Resize(object sender, EventArgs e)
    {
          if (this.IsHandleCreated)
        {
            this.Invoke(new EventHandler(delegate
            {
                asc.SetResizeInput(this);//运行主程序
            }));
        }
    
      
        //MessageBox.Show(label1.Font.Size.ToString());
        //this.Text = this.Width.ToString() + " " + this.Height.ToString();  //窗体标题显示长度和宽度
    }
}