这个就是屏幕抓图程序: using System ;

using System.Drawing ;

using System.Collections ;

using System.ComponentModel ;

using System.Windows.Forms ;

using System.Data ;

using System.Drawing.Imaging ;

public class Form1 : Form

{

private Button button1 ;

private System.ComponentModel.Container components = null ;

public Form1 ( )

{

//初始化窗体中的各个组件

InitializeComponent ( ) ;

}

// 清除程序中使用过的资源

protected override void Dispose ( bool disposing )

{

if ( disposing )

{

if ( components != null )

{

components.Dispose ( ) ;

}

}

base.Dispose ( disposing ) ;

}

private void InitializeComponent ( )

{

button1 = new Button ( );

SuspendLayout ( ) ;

button1.Location = new System.Drawing.Point ( 64 , 40 ) ;

button1.Name = "button1" ;

button1.Size = new System.Drawing.Size ( 80 , 32 ) ;

button1.TabIndex = 0 ;

button1.Text = "捕获" ;

button1.Click += new System.EventHandler ( button1_Click ) ;

AutoScaleBaseSize = new System.Drawing.Size ( 6 , 14 ) ;

ClientSize = new System.Drawing.Size ( 216 , 125 ) ;

Controls.Add ( button1 ) ;

MaximizeBox = false ;

MinimizeBox = false ;

Name = "Form1" ;

Text = "C#捕获当前屏幕！" ;

ResumeLayout ( false ) ;

}

//声明一个API函数

[ System.Runtime.InteropServices.DllImportAttribute ( "gdi32.dll" ) ]

private static extern bool BitBlt (

IntPtr hdcDest , // 目标 DC的句柄

int nXDest ,

int nYDest ,

int nWidth ,

int nHeight ,

IntPtr hdcSrc , // 源DC的句柄

int nXSrc ,

int nYSrc ,

System.Int32 dwRop // 光栅的处理数值

) ;

static void Main ( )

{

Application.Run ( new Form1 ( ) ) ;

}

private void button1_Click ( object sender , System.EventArgs e )

{

//获得当前屏幕的大小

Rectangle rect = new Rectangle ( ) ;

rect = Screen.GetWorkingArea ( this ) ;

//创建一个以当前屏幕为模板的图象

Graphics g1 = this.CreateGraphics ( ) ;

//创建以屏幕大小为标准的位图

Image MyImage = new Bitmap ( rect.Width , rect.Height , g1 ) ;

Graphics g2 = Graphics.FromImage ( MyImage ) ;

//得到屏幕的DC

IntPtr dc1 = g1.GetHdc ( ) ;

//得到Bitmap的DC

IntPtr dc2 = g2.GetHdc ( ) ;

//调用此API函数，实现屏幕捕获

BitBlt ( dc2 , 0 , 0 , rect.Width , rect.Height , dc1 , 0 , 0 , 13369376 ) ;

//释放掉屏幕的DC

g1.ReleaseHdc ( dc1 ) ;

//释放掉Bitmap的DC

g2.ReleaseHdc ( dc2 ) ;

//以JPG文件格式来保存

MyImage.Save ( @"c:\\Capture.jpg" , ImageFormat.Jpeg );

MessageBox.Show ( "当前屏幕已经保存为C盘的capture.jpg文件！" ) ;

}

}

5楼的搞的不错

请问那个光栅出的值是不是一定是13369376 呢？