VB.NET屏幕截图方法2则

    
    

     
     '
     
      根据VB6代码改的，经过本人优化。请先导入Drawing类库。
     
     

     
     Declare
     
      
     
     Function
     
      SelectObject 
     
     Lib
     
      
     
     "
     
     gdi32
     
     "
     
      (
     
     ByVal
     
      hdc 
     
     As
     
     Integer
     
     ,
     
      hObject 
     
     ) 
     
      BitBlt 
     
      hDestDC 
     
      x 
     
      y 
     
      nWidth 
     
      nHeight 
     
      hSrcDC 
     
      xSrc 
     
      ySrc 
     
      dwRop 
     
      CreateCompatibleBitmap 
     
      CreateDC 
     
     Alias
     
     CreateDCA
     
      lpDriverName 
     
     String
     
      lpDeviceName 
     
      lpOutput 
     
     ByRef
     
      lpInitData 
     
      CreateCompatibleDC 
     
     
 GetSerPic(
     
     Optional
     
      BitWidth 
     
     =
     
     -
     
     1
     
      BitHeight 
     
      Image
If
     
     <
     
     0
     
     Then
     
      My.Computer.Screen.Bounds.Width
 My.Computer.Screen.Bounds.Height
Dim
     
      Bhandle,DestDC,SourceDC 
     
      IntPtr
SourceDC 
     
      CreateDC(
     
     DISPLAY
     
     Nothing
     
     )
DestDC 
     
      CreateCompatibleDC(SourceDC)
Bhandle 
     
      CreateCompatibleBitmap(SourceDC,BitWidth,BitHeight)
SelectObject(DestDC,Bhandle)
BitBlt(DestDC,BitHeight,SourceDC,0); font-family:'Courier New'!important; line-height:1.5!important">&
     
     HCC0020)
Return
     
      Image.FromHbitmap(Bhandle)
End Function
    
    

最近学了Graphics类的画图方法，所以无聊就写了两个小程序。 ' 这一例是不使用系统API就可以进行屏幕截取的代码。 Public Class frmMain
Private Sub Button1_Click( sender System.Object,0); font-family:'Courier New'!important; line-height:1.5!important"> e System.EventArgs) Handles Button1.Click
Me .Hide()
p1 New Point( p2 Point(Screen.PrimaryScreen.Bounds.Width,Screen.PrimaryScreen.Bounds.Height)
pic Bitmap(p2.X,p2.Y)
Using g Graphics Graphics.FromImage(pic)
g.CopyFromScreen(p1,p1,p2)
.BackgroundImage pic
End .Show()
End Sub End Class