C# 图像处理(二)（屏幕截取、截屏插件）

双击运行截屏插件，工具默认延时5秒后截屏



可截取全屏

可截取到快捷菜单和鼠标

截屏工具下载：getScreen.exe

也可通过cmd命令运行工具，调用示例参数如下：

REM 调用截屏工具进行截屏call "%~dp0getScreen.exe"REM 保存到指定目录（D:\tmp\截屏.png）call "%~dp0getScreen.exe" "D:\tmp\截屏1.png"REM 延时1秒执行（1000ms）call "%~dp0getScreen.exe" "D:\tmp\截屏2.png" 1000REM 截屏指定区域 （0 0 100 100）call "%~dp0getScreen.exe" "D:\tmp\截屏3.png" 1000 0 0 100 100REM 截屏时不要鼠标call "%~dp0getScreen.exe" "D:\tmp\截屏4.png" 1000 0 0 100 100 false

工具源码：

using System;using System.Collections.Generic;using System.Linq;using System.Threading.Tasks;using System.Windows.Forms;namespace getScreen{    static class Program    {        /// <summary>        /// 应用程序的主入口点。        /// 通过参数调用截屏插件，call "%~dp0getScreen.exe" "D:\tmp\截屏4.png" 1000 0 0 -1 -1 true        /// </summary>        [STAThread]        static void Main(String[] args)        {            Application.EnableVisualStyles();            Application.SetCompatibleTextRenderingDefault(false);            //Application.Run(new Form1());            // 设置截屏控制信息            ScreenParam param = new ScreenParam();            param.programExit = true;               // 截屏执行完成后退出程序            param.delay_ms = 5000;                  // 默认延时5秒截屏            if (args.Length > 0)            {                if (args.Length > 0) param.savePath = args[0];                      // 保存路径                if (args.Length > 1) param.delay_ms = Int32.Parse(args[1]);         // 延时（ms）                if (args.Length > 5)                {                    param.x = Int32.Parse(args[2]);                                 // 截取区域                    param.y = Int32.Parse(args[3]);                    param.width = Int32.Parse(args[4]);                    param.height = Int32.Parse(args[5]);                }                if (args.Length > 6) param.haveCursor = !args[5].Equals("false");   // 是否包含鼠标                //MessageBox.Show(param.savePath + ", " + param.delay_ms + ", " + param.x + ", " + param.y + ", " + param.width + ", " + param.height + ", " + param.haveCursor);             }            ScreenShot.getScreen(param);    // 截屏            Application.Run();              // 在当前线程上运行应用程序消息循环        }        /// <summary>        /// 调用系统退出        /// </summary>        public static void exit()        {            //Application.Exit();            //Application.ExitThread();            System.Environment.Exit(0);        }    }}

using System;using System.Collections.Generic;using System.Drawing;using System.Drawing.Imaging;using System.IO;using System.Linq;using System.Runtime.InteropServices;using System.Text;using System.Windows.Forms;namespace getScreen{    /// <summary>    /// 截屏控制参数    /// </summary>    class ScreenParam    {        public int x = 0, y = 0, width = -1, height = -1;   // 截取区域，当前设置值会替换为全屏        public String savePath = "";                        // 截屏图像保存完整路径        public bool haveCursor = true;                      // 是否包含鼠标        public int delay_ms = 0;                            // 延时ms        public bool programExit = false;    // 标识截屏完成后是否退出        /// <summary>        /// 截屏控制参数        /// </summary>        public ScreenParam(int x = 0, int y = 0, int width = -1, int height = -1, String savePath = "", bool haveCursor = true, int delay_ms = 0)         {             this.x = x;            this.y = y;            this.width =width;            this.height = height;            this.savePath = savePath;            this.haveCursor = haveCursor;            this.delay_ms = delay_ms;        }    }    class ScreenShot    {        # region 图像处理功能函数        /// <summary>        /// 按指定尺寸对图像pic进行非拉伸缩放        /// </summary>        public static Bitmap shrinkTo(Image pic, Size S, Boolean cutting)        {            //创建图像            Bitmap tmp = new Bitmap(S.Width, S.Height);     //按指定大小创建位图            //绘制            Graphics g = Graphics.FromImage(tmp);           //从位图创建Graphics对象            g.Clear(Color.FromArgb(0, 0, 0, 0));            //清空            Boolean mode = (float)pic.Width / S.Width > (float)pic.Height / S.Height;   //zoom缩放            if (cutting) mode = !mode;                      //裁切缩放            //计算Zoom绘制区域                         if (mode)                S.Height = (int)((float)pic.Height * S.Width / pic.Width);            else                S.Width = (int)((float)pic.Width * S.Height / pic.Height);            Point P = new Point((tmp.Width - S.Width) / 2, (tmp.Height - S.Height) / 2);            g.DrawImage(pic, new Rectangle(P, S));            return tmp;     //返回构建的新图像        }        //保存图像pic到文件fileName中，指定图像保存格式        public static void SaveToFile(Image pic, string fileName, bool replace, ImageFormat format)    //ImageFormat.Jpeg        {            // 创建保存目录            confirmDir(fileName);            //若图像已存在，则删除            if (System.IO.File.Exists(fileName) && replace)                System.IO.File.Delete(fileName);            //若不存在则创建            if (!System.IO.File.Exists(fileName))            {                if (format == null) format = getFormat(fileName);   //根据拓展名获取图像的对应存储类型                if (format == ImageFormat.MemoryBmp) pic.Save(fileName);                else pic.Save(fileName, format);                    //按给定格式保存图像            }        }        //根据文件拓展名，获取对应的存储类型        public static ImageFormat getFormat(string filePath)        {            ImageFormat format = ImageFormat.MemoryBmp;            String Ext = System.IO.Path.GetExtension(filePath).ToLower();            if (Ext.Equals(".png")) format = ImageFormat.Png;            else if (Ext.Equals(".jpg") || Ext.Equals(".jpeg")) format = ImageFormat.Jpeg;            else if (Ext.Equals(".bmp")) format = ImageFormat.Bmp;            else if (Ext.Equals(".gif")) format = ImageFormat.Gif;            else if (Ext.Equals(".ico")) format = ImageFormat.Icon;            else if (Ext.Equals(".emf")) format = ImageFormat.Emf;            else if (Ext.Equals(".exif")) format = ImageFormat.Exif;            else if (Ext.Equals(".tiff")) format = ImageFormat.Tiff;            else if (Ext.Equals(".wmf")) format = ImageFormat.Wmf;            else if (Ext.Equals(".memorybmp")) format = ImageFormat.MemoryBmp;            return format;        }        [DllImport("user32.dll")]        static extern bool GetCursorInfo(out CURSORINFO pci);        private const Int32 CURSOR_SHOWING = 0x00000001;        [StructLayout(LayoutKind.Sequential)]        struct POINT        {            public Int32 x;            public Int32 y;        }        [StructLayout(LayoutKind.Sequential)]        struct CURSORINFO        {            public Int32 cbSize;            public Int32 flags;            public IntPtr hCursor;            public POINT ptScreenPos;        }        private static ScreenParam paramI = null;        /// <summary>        /// 延时截屏处理逻辑        /// </summary>        private static void ScreenShot_Tick(object sender, EventArgs e)        {            ((Timer)sender).Stop(); // 停止计时            getScreen(paramI);       // 执行截屏            paramI = null;        }        /// <summary>        /// 根据param中的参数控制截屏        /// </summary>        public static void getScreen(ScreenParam param)        {            if (param == null) return;            if (param.delay_ms > 0)            {                Timer timer = new Timer();                timer.Interval = param.delay_ms;                timer.Tick += ScreenShot_Tick;                                paramI = param;                paramI.delay_ms = 0;                timer.Enabled = true;            }            else getScreen(param.x, param.y, param.width, param.height, param.savePath, param.haveCursor, param.delay_ms, param.programExit);        }        /// <summary>        /// 截取屏幕指定区域为Image，保存到路径savePath下，haveCursor是否包含鼠标        /// </summary>        public static Image getScreen(int x = 0, int y = 0, int width = -1, int height = -1, String savePath = "", bool haveCursor = true, int delay_ms = 0, bool exit = false)        {            // 延时截屏时无返回值            if (delay_ms > 0)            {                getScreen(new ScreenParam(x, y, width, height, savePath, haveCursor, delay_ms));                return null;            }            if (width == -1) width = SystemInformation.VirtualScreen.Width;            if (height == -1) height = SystemInformation.VirtualScreen.Height;            Bitmap tmp = new Bitmap(width, height);                 //按指定大小创建位图            Graphics g = Graphics.FromImage(tmp);                   //从位图创建Graphics对象            g.CopyFromScreen(x, y, 0, 0, new Size(width, height));  //绘制            // 绘制鼠标            if (haveCursor)            {                try                {                    CURSORINFO pci;                    pci.cbSize = Marshal.SizeOf(typeof(CURSORINFO));                    GetCursorInfo(out pci);                    System.Windows.Forms.Cursor cur = new System.Windows.Forms.Cursor(pci.hCursor);                    cur.Draw(g, new Rectangle(pci.ptScreenPos.x, pci.ptScreenPos.y, cur.Size.Width, cur.Size.Height));                }                catch (Exception ex) { }            // 若获取鼠标异常则不显示            }            if (savePath.Equals("")) savePath = JpgTmpPath();                   // 设置默认保存路径            //Size halfSize = new Size((int)(tmp.Size.Width * 0.8), (int)(tmp.Size.Height * 0.8));  // 按一半尺寸存储图像            if (!savePath.Equals("")) saveImage(tmp, tmp.Size, savePath);       // 保存到指定的路径下            if (exit) System.Environment.Exit(0);   // 退出当前应用程序            return tmp;     //返回构建的新图像        }        /// <summary>        /// 缩放icon为指定的尺寸，并保存到路径PathName        /// </summary>        public static void saveImage(Image image, Size size, String PathName)        {            Image tmp = shrinkTo(image, size, false);            SaveToFile(tmp, PathName, true, null);        }        // 生成jpg的临时保存路径        public static String JpgTmpPath()        {            string dateTime = DateTime.Now.ToString("yyyy-MM-dd_hh.mm.ss");            string screenDir = System.AppDomain.CurrentDomain.BaseDirectory + @"screens";  // 截屏保存路径            String pathName = screenDir + @"\" + dateTime + ".png";            return pathName;        }        /// <summary>        /// 检测目录是否存在，若不存在则创建        /// </summary>        public static void confirmDir(string path)        {            String rootDir = System.IO.Path.GetDirectoryName(path);             //获取path所在的目录            if (!Directory.Exists(rootDir)) Directory.CreateDirectory(rootDir); //若目录不存在则创建        }        # endregion    }}

工具源码下载

开源地址