Form1.cs
资源名称:Visual.rar [点击查看]
上传用户:yiyuerguo
上传日期:2014-09-27
资源大小:3781k
文件大小:4k
源码类别:
C#编程
开发平台:
Others
- using System;
- using System.Drawing;
- using System.Collections;
- using System.ComponentModel;
- using System.Windows.Forms;
- using System.Data;
- using System.Drawing.Imaging;
- namespace zhua2
- {
- /// <summary>
- /// Form1 的摘要说明。
- /// </summary>
- public class Form1 : System.Windows.Forms.Form
- {
- private System.Windows.Forms.Button button1;
- private System.Windows.Forms.SaveFileDialog saveFileDialog1;
- /// <summary>
- /// 必需的设计器变量。
- /// </summary>
- private System.ComponentModel.Container components = null;
- public Form1()
- {
- //
- // 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.button1 = new System.Windows.Forms.Button();
- this.saveFileDialog1 = new System.Windows.Forms.SaveFileDialog();
- this.SuspendLayout();
- //
- // button1
- //
- this.button1.Location = new System.Drawing.Point(80, 32);
- this.button1.Name = "button1";
- this.button1.Size = new System.Drawing.Size(112, 24);
- this.button1.TabIndex = 1;
- this.button1.Text = "开始抓图";
- this.button1.Click += new System.EventHandler(this.button1_Click);
- //
- // saveFileDialog1
- //
- this.saveFileDialog1.FileName = "doc1";
- this.saveFileDialog1.Filter = "jpg Files(*.jpg)|*.jpg|jpeg Files(*.*)|*.jpeg|bmp Files(*.bmp)|*.bmp";
- //
- // Form1
- //
- this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
- this.ClientSize = new System.Drawing.Size(292, 93);
- this.Controls.Add(this.button1);
- this.Name = "Form1";
- this.Text = "抓图软件";
- this.ResumeLayout(false);
- }
- #endregion
- /// <summary>
- /// 应用程序的主入口点。
- /// </summary>
- [STAThread]
- static void Main()
- {
- Application.Run(new Form1());
- }
- //调用动态链接库gdi32.dll
- [ System.Runtime.InteropServices.DllImportAttribute ( "gdi32.dll" ) ]
- private 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
- ) ;
- //调用动态链接库gdi32.dll
- [ System.Runtime.InteropServices.DllImportAttribute ( "gdi32.dll" ) ]
- private static extern IntPtr CreateDC (
- string lpszDriver , // 驱动名称
- string lpszDevice , // 设备名称
- string lpszOutput , // 无用,可以设定位"NULL"
- IntPtr lpInitData // 任意的打印机数据
- ) ;
- private void button1_Click(object sender, System.EventArgs e)
- {
- this.Hide();
- IntPtr dc1 = CreateDC ( "DISPLAY" , null , null , ( IntPtr ) null ) ;
- //创建显示器的DC
- Graphics g1 = Graphics.FromHdc ( dc1 ) ;
- //由一个指定设备的句柄创建一个新的Graphics对象
- Bitmap MyImage = new Bitmap ( Screen.PrimaryScreen.Bounds.Width , Screen.PrimaryScreen.Bounds.Height , g1 ) ;
- //根据屏幕大小创建一个与之相同大小的Bitmap对象
- Graphics g2 = Graphics.FromImage ( MyImage ) ;
- //获得屏幕的句柄
- IntPtr dc3 = g1.GetHdc ( ) ;
- //获得位图的句柄
- IntPtr dc2 = g2.GetHdc ( ) ;
- //把当前屏幕捕获到位图对象中
- BitBlt ( dc2 , 0 , 0 , Screen.PrimaryScreen.Bounds.Width , Screen.PrimaryScreen.Bounds.Height , dc3 , 0 , 0 , 13369376 ) ;
- //把当前屏幕拷贝到位图中
- g1.ReleaseHdc ( dc3 ) ;
- //释放屏幕句柄
- g2.ReleaseHdc ( dc2 ) ;
- //释放位图句柄
- if (saveFileDialog1.ShowDialog () == DialogResult.OK )
- {
- MyImage.Save ( saveFileDialog1.FileName, ImageFormat.Bmp ) ;
- MessageBox.Show ( "已经把当前屏幕保存!" ) ;
- this.Show();
- }
- }
- }
- }