ADHelper 活动目录用户操作类[81]

using system.data ;
using system.drawing.imaging ;
using system.io ;
  //导入在程序中使用到的名称空间
public class capture : form
{
 private system.componentmodel.container components = null ;
 private icon mnettrayicon = new icon ( "tray.ico" ) ;
 private bitmap myimage = null ;
 private notifyicon trayicon ;
 private contextmenu notifyiconmnu ;
 public capture ( )
 {
  //初始化窗体中使用到的组件
  initializecomponent ( ) ;
 }
 protected override void onactivated ( eventargs e )
 {
  this.hide ( ) ;
 }
 [ 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
  ) ;
 [ 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
  ) ; 
 public void capture ( object sender , system.eventargs e )
 {
  this.visible = false ;
  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
  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
  myimage.save ( "c:\\myjpeg.jpg" , imageformat.jpeg ) ;
  messagebox.show ( "已经把当前屏幕保存到c:\\myjpeg.jpg文件中！" ) ;
  this.visible = true ;
 }
 public void exitselect ( object sender , system.eventargs e )
 {
  //隐藏托盘程序中的图标
  trayicon.visible = false ;
  //关闭系统
  this.close ( ) ;
 }
 //清除程序中使用过的资源
 /*public override void dispose( )
 {
  base.dispose ( ) ;
  if ( components != null )
   components.dispose ( ) ;
 } */
 private void initializecomponent ( )
 {
  //设定托盘程序的各个属性
  trayicon = new notifyicon ( ) ;
  trayicon.icon = mnettrayicon ;
  trayicon.text = "用c#做screen capture程序" ;
  trayicon.visible = true ;
  //定义一个menuitem数组，并把此数组同时赋值给contextmenu对象
  menuitem [ ] mnuitms = new menuitem [ 3 ] ;
  mnuitms [ 0 ] = new menuitem ( ) ;
  mnuitms [ 0 ] .text = "捕获当前屏幕！" ;
  mnuitms [ 0 ] .click += new system.eventhandler ( this.capture ) ;
  mnuitms [ 1 ] = new menuitem ( "-" ) ;
  mnuitms [ 2 ] = new menuitem ( ) ;
  mnuitms [ 2 ] .text = "退出系统" ;
  mnuitms [ 2 ] .click += new system.eventhandler ( this.exitselect ) ;
  mnuitms [ 2 ] .defaultitem = true ;
  notifyiconmnu = new contextmenu ( mnuitms ) ;
  trayicon.contextmenu = notifyiconmnu ;
  //为托盘程序加入设定好的contextmenu对象
  this.suspendlayout ( ) ;
  this.autoscalebasesize = new system.drawing.size ( 5 , 13 ) ;
  this.clientsize = new system.drawing.size ( 320 , 56 ) ;
  this.controlbox = false ;
  this.maximizebox = false ;
  this.minimizebox = false ;
  this.windowstate = system.windows.forms.formwindowstate.minimized ;
  this.name = "capture" ;
  this.showintaskbar = false ;
  this.text = "用c#做screen capture程序！" ;
  this.resumelayout ( false ) ;
 }
 static void main ( )
 {
  application.run ( new capture ( ) ) ;
 }
}