截取屏幕/桌面，截图并保存图片到本机 实例完整源码下载

using System;using System.Drawing;using System.Collections;using System.ComponentModel;using System.Windows.Forms;using System.Data;using System.Runtime.InteropServices;namespace CaptureScreen{/// <summary>/// CaptureScreenForm 的摘要说明。/// </summary>public class CaptureScreenForm : System.Windows.Forms.Form{private System.Windows.Forms.PictureBox picbox;private System.Windows.Forms.Button exitBtn;private System.Windows.Forms.Button aboutBtn;private System.Windows.Forms.Button ClearBtn;private System.Windows.Forms.Button saveBtn;private System.Windows.Forms.Button fullScreenBtn;private System.Windows.Forms.Button mouseCaptureBtn;public static Image image = null ;private System.Windows.Forms.Panel panel1;/// <summary>/// 必需的设计器变量。/// </summary>private System.ComponentModel.Container components = null;public CaptureScreenForm(){//// Windows 窗体设计器支持所必需的//InitializeComponent();//// TODO: 在 InitializeComponent 调用后添加任何构造函数代码//}/// <summary>/// 清理所有正在使用的资源。/// </summary>protected override void Dispose( bool disposing ){if( disposing ){if (components != null) {components.Dispose();}}base.Dispose( disposing );}#region Windows 窗体设计器生成的代码/// <summary>/// 设计器支持所需的方法 - 不要使用代码编辑器修改/// 此方法的内容。/// </summary>private void InitializeComponent(){this.picbox = new System.Windows.Forms.PictureBox();this.fullScreenBtn = new System.Windows.Forms.Button();this.mouseCaptureBtn = new System.Windows.Forms.Button();this.ClearBtn = new System.Windows.Forms.Button();this.saveBtn = new System.Windows.Forms.Button();this.aboutBtn = new System.Windows.Forms.Button();this.exitBtn = new System.Windows.Forms.Button();this.panel1 = new System.Windows.Forms.Panel();this.panel1.SuspendLayout();this.SuspendLayout();// // picbox// this.picbox.Location = new System.Drawing.Point(0, 40);this.picbox.Name = "picbox";this.picbox.Size = new System.Drawing.Size(680, 312);this.picbox.SizeMode = System.Windows.Forms.PictureBoxSizeMode.AutoSize;this.picbox.TabIndex = 0;this.picbox.TabStop = false;// // fullScreenBtn// this.fullScreenBtn.Location = new System.Drawing.Point(0, 0);this.fullScreenBtn.Name = "fullScreenBtn";this.fullScreenBtn.Size = new System.Drawing.Size(96, 32);this.fullScreenBtn.TabIndex = 1;this.fullScreenBtn.Text = "全屏截取";this.fullScreenBtn.Click = new System.EventHandler(this.fullScreenBtn_Click);// // mouseCaptureBtn// this.mouseCaptureBtn.Location = new System.Drawing.Point(120, 0);this.mouseCaptureBtn.Name = "mouseCaptureBtn";this.mouseCaptureBtn.Size = new System.Drawing.Size(96, 32);this.mouseCaptureBtn.TabIndex = 2;this.mouseCaptureBtn.Text = "鼠标截取";this.mouseCaptureBtn.Click = new System.EventHandler(this.mouseCaptureBtn_Click);// // ClearBtn// this.ClearBtn.Location = new System.Drawing.Point(240, 0);this.ClearBtn.Name = "ClearBtn";this.ClearBtn.Size = new System.Drawing.Size(88, 32);this.ClearBtn.TabIndex = 3;this.ClearBtn.Text = "清除截取图片";this.ClearBtn.Click = new System.EventHandler(this.ClearBtn_Click);// // saveBtn// this.saveBtn.Location = new System.Drawing.Point(352, 0);this.saveBtn.Name = "saveBtn";this.saveBtn.Size = new System.Drawing.Size(96, 32);this.saveBtn.TabIndex = 4;this.saveBtn.Text = "保存截取图片";this.saveBtn.Click = new System.EventHandler(this.saveBtn_Click);// // aboutBtn// this.aboutBtn.Location = new System.Drawing.Point(472, 0);this.aboutBtn.Name = "aboutBtn";this.aboutBtn.Size = new System.Drawing.Size(96, 32);this.aboutBtn.TabIndex = 5;this.aboutBtn.Text = "关 于";this.aboutBtn.Click = new System.EventHandler(this.aboutBtn_Click);// // exitBtn// this.exitBtn.Location = new System.Drawing.Point(592, 0);this.exitBtn.Name = "exitBtn";this.exitBtn.Size = new System.Drawing.Size(88, 32);this.exitBtn.TabIndex = 6;this.exitBtn.Text = "退 出";this.exitBtn.Click = new System.EventHandler(this.exitBtn_Click);// // panel1// this.panel1.Controls.Add(this.fullScreenBtn);this.panel1.Controls.Add(this.mouseCaptureBtn);this.panel1.Controls.Add(this.ClearBtn);this.panel1.Controls.Add(this.saveBtn);this.panel1.Controls.Add(this.aboutBtn);this.panel1.Controls.Add(this.exitBtn);this.panel1.Location = new System.Drawing.Point(0, 0);this.panel1.Name = "panel1";this.panel1.Size = new System.Drawing.Size(680, 32);this.panel1.TabIndex = 7;// // CaptureScreenForm// this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);this.AutoScroll = true;this.ClientSize = new System.Drawing.Size(696, 358);this.Controls.Add(this.panel1);this.Controls.Add(this.picbox);this.Name = "CaptureScreenForm";this.Text = "截取屏幕";this.panel1.ResumeLayout(false);this.ResumeLayout(false);}#endregion/// <summary>/// 应用程序的主入口点。/// </summary>[STAThread]static void Main() {Application.Run(new CaptureScreenForm());}protected override void OnPaint(PaintEventArgs e) { base.OnPaint (e); if(image != null) { this.picbox.Image = image; } else { this.picbox.Image = null; this.picbox.Refresh();} } // 引用API[System.Runtime.InteropServices.DllImportAttribute("gdi32.dll")] public static extern bool BitBlt( IntPtr hdcDest, //目标设备的句柄 int nXDest, // 目标对象的左上角的X坐标 int nYDest, // 目标对象的左上角的X坐标 int nWidth, // 目标对象的矩形的宽度 int nHeight, // 目标对象的矩形的长度 IntPtr hdcSrc, // 源设备的句柄 int nXSrc, // 源对象的左上角的X坐标 int nYSrc, // 源对象的左上角的X坐标 System.Int32 dwRop // 光栅的操作值 ); private void exitBtn_Click(object sender, System.EventArgs e){Application.Exit();}private void aboutBtn_Click(object sender, System.EventArgs e){MessageBox.Show("Code by Star in 2006-3-17,E_mail: ygh_01@163.com ,thank you to use this.");}private void ClearBtn_Click(object sender, System.EventArgs e){CaptureScreenForm.image = null;this.Invalidate();}private void saveBtn_Click(object sender, System.EventArgs e){SaveFileDialog saveImageDialog = new SaveFileDialog();saveImageDialog.Title = "Capture screen image save dialog";saveImageDialog.Filter= @"jpeg|*.jpg|bmp|*.bmp|gif|*.gif";if(saveImageDialog.ShowDialog() == DialogResult.OK){ string fileName = saveImageDialog.FileName.ToString(); if(fileName != "" && fileName != null){string fileExtName = fileName.Substring(fileName.LastIndexOf(".") 1).ToString();System.Drawing.Imaging.ImageFormat imgformat = null; if(fileExtName!=""){switch(fileExtName) { case "jpg": imgformat = System.Drawing.Imaging.ImageFormat.Jpeg; break; case "bmp": imgformat = System.Drawing.Imaging.ImageFormat.Bmp; break; case "gif": imgformat = System.Drawing.Imaging.ImageFormat.Gif; break; default: MessageBox.Show("只能存取为: jpg,bmp,gif 格式"); break; } }//默认保存为JPG格式if(imgformat == null){imgformat = System.Drawing.Imaging.ImageFormat.Jpeg;} try{CaptureScreenForm.image.Save(fileName,imgformat);MessageBox.Show("图片已经成功保存!~~");}catch{ MessageBox.Show("保存失败,你还没有截取过图片或已经清空图片!");}}}}private void fullScreenBtn_Click(object sender, System.EventArgs e){ CaptureScreenForm.image = windowFullScreen();picbox.Image = CaptureScreenForm.image;}public static Bitmap windowFullScreen(){//建立屏幕GraphicsGraphics grpScreen = Graphics.FromHwnd(IntPtr.Zero);//根据屏幕大小建立位图Bitmap bitmap = new Bitmap(Screen.PrimaryScreen.Bounds.Width,Screen.PrimaryScreen.Bounds.Height,grpScreen);//建立位图相关GraphicsGraphics grpBitmap = Graphics.FromImage(bitmap); //建立屏幕上下文IntPtr hdcScreen = grpScreen.GetHdc();//建立位图上下文IntPtr hdcBitmap = grpBitmap.GetHdc();//将屏幕捕获保存在图位中BitBlt(hdcBitmap,0,0,bitmap.Width,bitmap.Height,hdcScreen,0,0,0x00CC0020);//关闭位图句柄grpBitmap.ReleaseHdc(hdcBitmap);//关闭屏幕句柄grpScreen.ReleaseHdc(hdcScreen);//释放位图对像grpBitmap.Dispose();//释放屏幕对像grpScreen.Dispose();//返回捕获位图return bitmap;}private void mouseCaptureBtn_Click(object sender, System.EventArgs e){MouseCaptureForm mouseCapture = new MouseCaptureForm();mouseCapture.Show();}}}