软件发布：网页设计师必备 之 屏幕抓图工具(支持Windows 2008)

    屏幕抓图一直使用一款只有 16K 大小的工具(Capture)，非常很方便，但在Windows2008下不兼容，无法抓图，因此自己写一个，运行环境为 .NET 2.0，使用方式完全与上述的Catpure相同，并且只有 8K 大小，截图质量更好。
    使用截图如下：


代码如下：
C#:

using System;
using System.Drawing;
using System.Windows.Forms;

namespace Xianfen.Net.Capture
{
    /// <summary>
    ///
    /// 屏幕截图工具
    ///
    /// http://www.xianfen.net
    ///
    /// Ver:1.0
    ///
    /// 2008-07-01
    ///
    /// </summary>
    public class Capture : Form
    {
        PictureBox pictureBox;
        bool isDown = false;
        Point downPos;
        Point upPos;
        Rectangle rect;
        Bitmap bmp;
        Graphics g;

        public Capture()
        {
            pictureBox = new PictureBox();
            pictureBox.Dock = DockStyle.Fill;
            pictureBox.BorderStyle = BorderStyle.None;
            pictureBox.MouseDown += new MouseEventHandler(pictureBox_MouseDown);
            pictureBox.MouseMove += new MouseEventHandler(pictureBox_MouseMove);
            pictureBox.MouseUp += new MouseEventHandler(pictureBox_MouseUp);

            this.Cursor = new Cursor(Environment.SystemDirectory + @"\..\Cursors\pen_rm.cur");
            this.Controls.Add(pictureBox);
            this.ShowInTaskbar = false;
            this.DoubleBuffered = true;
            this.Size = new Size(0, 0);
            this.Load += new EventHandler(Capture_Load);
        }

        void pictureBox_MouseDown(object sender, MouseEventArgs e)
        {
            isDown = true;
            downPos = e.Location;
        }

        void pictureBox_MouseMove(object sender, MouseEventArgs e)
        {
            if (isDown)
            {
                pictureBox.Refresh();
                ControlPaint.DrawReversibleFrame(
                    new Rectangle(downPos.X, downPos.Y, e.X - downPos.X, e.Y - downPos.Y),
                    Color.Black, FrameStyle.Dashed);
            }
        }

        void pictureBox_MouseUp(object sender, MouseEventArgs e)
        {
            isDown = false;
            upPos = e.Location;

            if (upPos.X < downPos.X)
            {
                upPos.X = upPos.X + downPos.X;
                downPos.X = upPos.X - downPos.X;
                upPos.X = upPos.X - downPos.X;
            }

            if (upPos.Y < downPos.Y)
            {
                upPos.Y = upPos.Y + downPos.Y;
                downPos.Y = upPos.Y - downPos.Y;
                upPos.Y = upPos.Y - downPos.Y;
            }

            if (upPos.X - downPos.X > 0 && upPos.Y - downPos.Y > 0)
            {
                try
                {
                    Bitmap targetBmp = new Bitmap(upPos.X - downPos.X, upPos.Y - downPos.Y);
                    Graphics targetG = Graphics.FromImage(targetBmp);

                    targetG.DrawImage(bmp, new Rectangle(0, 0, upPos.X - downPos.X, upPos.Y - downPos.Y),
                        downPos.X, downPos.Y, upPos.X - downPos.X, upPos.Y - downPos.Y, GraphicsUnit.Pixel);

                    targetG.Dispose();
                    bmp.Dispose();
                    g.Dispose();

                    Clipboard.SetImage(targetBmp);
                }
                catch
                {
                }
            }

            Close();
        }

        void Capture_Load(object sender, EventArgs e)
        {
            rect = Screen.PrimaryScreen.Bounds;
            bmp = new Bitmap(rect.Width, rect.Height);

            g = Graphics.FromImage(bmp);
            g.CopyFromScreen(0, 0, 0, 0, rect.Size);

            pictureBox.Image = bmp;

            this.TopMost = true;
            this.FormBorderStyle = FormBorderStyle.None;
            this.WindowState = FormWindowState.Maximized;
        }
    }
}

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