急求C#解答。。

Question

在C#窗体中如何实现图片的动态移动,即鼠标可拖动图片到任意位置，能否给出具体C#代码？多谢了

Answer 1

你就控制picturebox的位置就行了，mousedown记录初始位置，mousemove记录新坐标

Answer 2

http://blog.163.com/lightyue_leyuan/blog/static/7513607720096299102502/
 楼主去看看吧 这有你要的例子

Answer 3

窗体的MouseMove事件        private void Form1_MouseMove(object sender, MouseEventArgs e)
        {
            pictureBox1.Left = e.X;
            pictureBox1.Top = e.Y;
            this.Refresh();
        }

Answer 4

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);
        }
        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;
                rect.Width = (int)(rect.Width * zoom);
                rect.Height = (int)(rect.Height * zoom);
                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/1000;
            if (zoom < 0)
                zoom = 0.0f;
            if (zoom > 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;
        }        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            System.Diagnostics.Process.Start("IEXPLORE.EXE", "http://www.google.com");
        }
    }

Answer 5

完整代码：
        int x0, y0;
        bool lbtclk = false;
        private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
        {
            x0 = e.X;
            y0 = e.Y;
            lbtclk = (e.Button == System.Windows.Forms.MouseButtons.Left);
        }        private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
        {
            if (lbtclk)
            {
                pictureBox1.Left += (e.X - x0);
                pictureBox1.Top += (e.Y - y0);
 
            }
        }        private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
        {
            lbtclk = false;
        }

Answer 6

在窗体中添加了一个panel，在panel中添加了多个picturebox，每个有一张图片，想实现鼠标任意拖动每一张图片。

Answer 7

弄个panel 随鼠标移动 ，图片放pannel上