運用C#制作屏幕捕捉程序(4)
完整代碼：
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Drawing.Imaging;
namespace FormCapture
{
///
/// Summary description for Form1.
///
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.PictureBox pictureBox1;
private System.Windows.Forms.Button button1;
///
/// Required designer variable.
///
private System.ComponentModel.Container components = null;
public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
///
/// Clean up any resources being used.
///
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
///
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///
private void InitializeComponent()
{
System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));
this.button1 = new System.Windows.Forms.Button();
this.pictureBox1 = new System.Windows.Forms.PictureBox();
this.SuspendLayout();
//
// button1
//
this.button1.BackColor = System.Drawing.SystemColors.ActiveBorder;
this.button1.ForeColor = System.Drawing.SystemColors.ControlDarkDark;
this.button1.Location = new System.Drawing.Point(272, 19);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(72, 27);
this.button1.TabIndex = 4;
this.button1.Text = "屏幕捕捉";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// pictureBox1
//
this.pictureBox1.Image = ((System.Drawing.Bitmap)(resources.GetObject("pictureBox1.Image")));
this.pictureBox1.Location = new System.Drawing.Point(16, 16);
this.pictureBox1.Name = "pictureBox1";
this.pictureBox1.Size = new System.Drawing.Size(240, 224);
this.pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
this.pictureBox1.TabIndex = 0;
this.pictureBox1.TabStop = false;
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(358, 255);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.button1,
this.pictureBox1});
this.KeyPreview = true;
this.Name = "Form1";
this.Text = "屏幕捕捉程序";
this.ResumeLayout(false);
}
#endregion
[System.Runtime.InteropServices.DllImportAttribute("gdi32.dll")]
private static extern bool BitBlt(
IntPtr hdcDest, file://目的DC的句柄
int nXDest, file://目的圖形的左上角的x坐標
int nYDest, file://目的圖形的左上角的y坐標
int nWidth, file://目的圖形的矩形寬度
int nHeight, file://目的圖形的矩形高度
IntPtr hdcSrc, file://源DC的句柄
int nXSrc, file://源圖形的左上角的x坐標
int nYSrc, file://源圖形的左上角的x坐標
System.Int32 dwRop file://光柵操作代碼
);
private void button1_Click(object sender, System.EventArgs e)
{
Graphics g1 = this.CreateGraphics();//獲得窗體圖形對象
Image MyImage = new Bitmap(this.ClientRectangle.Width, this.ClientRectangle.Height, g1);
Graphics g2 = Graphics.FromImage(MyImage);//創建位圖圖形對象
IntPtr dc1 = g1.GetHdc();//獲得窗體的上下文設備
IntPtr dc2 = g2.GetHdc();//獲得位圖文件的上下文設備
BitBlt(dc2, 0, 0, this.ClientRectangle.Width, this.ClientRectangle.Height, dc1, 0, 0, 13369376);//寫入到位圖
g1.ReleaseHdc(dc1);//釋放窗體的上下文設備
g2.ReleaseHdc(dc2);//釋放位圖文件的上下文設備
MyImage.Save(@"c:Captured.jpg", ImageFormat.Jpeg);//保存為jpeg文件
MessageBox.Show("保存圖片結束！");
}
///
/// The main entry point for the application.
///
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
}
}
