求助！C#关于图片缩放

Question

图片缩放后如果我希望图片上方的控件也能跟随着一起缩放，我应该怎么做呢？C#图片控件

Answer 1

准确说是，图片本身上方我放了一个lable，lable的坐标是100,100.当我图片缩小的时候，我希望lable的坐标能跟随我的图片一起变更位置，这样该怎么做到？

Answer 2

如果是winform的picturebox控件，设置成控件跟随图片大小的模式就行。
不知道你具体是什么问题，描述得不够清楚

Answer 3

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Xml;namespace tc
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            pictureBox1.Paint+=new PaintEventHandler(pictureBox1_Paint);
            this.MouseWheel += new MouseEventHandler(Form1_MouseWheel);
        }
        float zoom;
        Point oldPoint,newPoint;
        bool IsDown;
        bool IsLoadBmp;
        Bitmap bmp;
        private void Form1_Load(object sender, EventArgs e)
        {
            IsLoadBmp = IsDown = false;
            zoom = 1.0f;
            oldPoint = new Point(0,0);
            newPoint = new Point(0,0);
            btnHight = button1.Height;
            btnWith = button1.Width;
        }
        int With = 0;
        int Height = 0;
        int btnHight = 0;
        int btnWith=0;
        private void pictureBox1_Paint(object sender, PaintEventArgs e)
        {                       Graphics g = e.Graphics;
            if (IsLoadBmp)
            {
                Rectangle rect = new Rectangle(0, 0, bmp.Width, bmp.Height);
                rect.X = newPoint.X;
                rect.Y = newPoint.Y;
                Rectangle rt = new Rectangle(0, 0, btnWith, btnHight);
                rt.X = button1.Location.X;
                rt.Y = button1.Location.Y;
                //button1.Location = new Point(newPoint.X, newPoint.Y);
                //button1.Location.Y = newPoint.Y;
                
                if (With==0&&Height==0)
                {
                    rect.Width = (int)(rect.Width * zoom);
                    rect.Height = (int)(rect.Height * zoom);
                    //记录下当前的长宽
                    With = rect.Width;
                    Height = rect.Height;
                }
                else
                {
                    if ((int)(rect.Width * zoom)>=1000||(int)(rect.Height * zoom)>=1000)
                    {
                        if ((int)(rect.Width * zoom)<With||(int)(rect.Height * zoom)<Height)
                        {
                            rect.Width = (int)(rect.Width * zoom);
                             rect.Height = (int)(rect.Height * zoom);
                             button1.Width = (int)(rt.Width * zoom);
                             button1.Height = (int)(rt.Height * zoom);
                          //记录下当前的长宽
                             With = rect.Width;
                             Height = rect.Height;
                        }
                        else
                        {
                            rect.Width = With;
                            rect.Height = Height;
                        }
                       
                    }
                    else
                    {
                        rect.Width = (int)(rect.Width * zoom);
                        rect.Height = (int)(rect.Height * zoom);
                        button1.Width = (int)(rt.Width * zoom);
                        button1.Height = (int)(rt.Height * zoom);
                        //记录下当前的长宽
                        With = rect.Width;
                        Height = rect.Height;
                    }
                }
                
                g.FillRectangle(Brushes.White, pictureBox1.ClientRectangle);
                g.DrawImage(bmp, rect, new Rectangle(0, 0, bmp.Width, bmp.Height), GraphicsUnit.Pixel);
            }
            
            
        }
        private void OpenImg_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofg = new OpenFileDialog();
            ofg.Filter = "图片文件(*.bmp)|*.bmp;*.jpg;*.jpeg;*.png;*.gif";
            ofg.Multiselect = false;
            if (ofg.ShowDialog() == DialogResult.OK)
            {
                Form1_Load(null, null);
                Image img = Image.FromFile(ofg.FileName);
                bmp = new Bitmap(img);
                if (pictureBox1.Width < bmp.Width || pictureBox1.Height < bmp.Height)
                    zoom = Math.Min((float)pictureBox1.Width / (float)bmp.Width, (float)pictureBox1.Height / (float)bmp.Height);
                else
                    zoom = 1.0f;
                img.Dispose();
                IsLoadBmp = true;
                pictureBox1.Refresh();
            }
        }
        private void Form1_MouseWheel(object sender, MouseEventArgs e)
        {
            zoom += (float)e.Delta/2000;
            if (zoom < 0)//原来是0
                zoom = 0.0f;
            if (zoom > 30)//原来是100
                zoom =10.0f;
            pictureBox1.Refresh();
        }        private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
        {
            IsDown = true;
            oldPoint.X =e.Location.X-newPoint.X;
            oldPoint.Y = e.Location.Y - newPoint.Y;
            this.Cursor = Cursors.Hand;
        }        private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
        {
            if (IsDown)
            {
                Point temp = e.Location;
                newPoint.X=temp.X - oldPoint.X;
                newPoint.Y=temp.Y - oldPoint.Y;
                pictureBox1.Refresh();
            }
        }        private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
        {
            IsDown = false;
            this.Cursor = Cursors.Default;
        }
    }
}源代码是这样的，我加了一些东西进去，我希望能得到就是我加载一张图片后，图片上如果有某个控件，希望控件能随着图片变小放大而变小放大。