怎样写一个程序给当前的屏幕一个COPY,相当于按下Print Screen SysRq键,并把屏幕的COPY保存起来.

Question

用winAPI，有个函数是取屏的，函数名不记得了，查一下资料

Answer 1

你可以把击键PrintScreen发送到应用程序：
System.Windows.Forms.SendKeys.Send("{PRTSC}"); 

Answer 2

http://www.5xsoft.com/data/200203/2914353201.htm

Answer 3

http://www.codeproject.com/csharp/csCaptureScreen1.asp?target=screen
现成代码,不过自己要分析一下

Answer 4

void __fastcall TForm1::Net_Snap_Screen(int LeftPos,int TopPos,
               int RightPos,int BottomPos)
{
int RectWidth,RectHeight; 
HDC SourceDC;
Graphics::TBitmap *Bitmap=new Graphics::TBitmap(); 
RectWidth=RightPos-LeftPos; 
RectHeight=BottomPos-TopPos; 
SourceDC=CreateDC("Display",NULL,NULL,NULL); 
Bitmap->Width = RectWidth;
Bitmap->Height= RectHeight;
BitBlt(Bitmap->Canvas->Handle,0,0,RectWidth,RectHeight,SourceDC,LeftPos,TopPos,SRCCOPY);
TJPEGImage*jpeg=new TJPEGImage();
jpeg->PixelFormat=jf8Bit;
jpeg->CompressionQuality=JPEGQuality;
jpeg->Assign((TPersistent*)Bitmap);
jpeg->Compress();
JPEGStream->Clear();
jpeg->SaveToStream(JPEGStream); delete jpeg; 
delete Bitmap;
DeleteDC(SourceDC);