vc 打印示例

Print()
 {
  CDC   PrintDC;
  HDC   hPrintDC;

  CPrintDialog   prtDlg(FALSE,PD_DISABLEPRINTTOFILE);
  if   (prtDlg.DoModal()   ==   IDCANCEL)   return   ;

  hPrintDC   =   prtDlg.GetPrinterDC();
  PrintDC.Attach(hPrintDC);

  CString strTitle;   //   Get   the   application   title
  DOCINFO di;         //   Initialise   print   document   details 
  strTitle.Format(_T("%s:%s"),CTextRes::GetInstance()->LoadString(IDS_STRING23592),m_strIndentID);//打印订单
 

  ::ZeroMemory(&di,   sizeof   (DOCINFO));
  di.cbSize   =   sizeof   (DOCINFO);
  di.lpszDocName   =   strTitle;

  //   Begin   a   new   print   job
  if   FAILED(PrintDC.StartDoc(&di)   ==   -1)   return;

  PrintDC.StartPage();

  int   nScreenW   =   GetDeviceCaps(*GetDC(),   LOGPIXELSX);
  int   nScreenH   =   GetDeviceCaps(*GetDC(),   LOGPIXELSY);
  int   nPrintW   =   GetDeviceCaps(hPrintDC,   LOGPIXELSX);
  int   nPrintH   =   GetDeviceCaps(hPrintDC,   LOGPIXELSY);

  float   fRateX   =   nPrintW   /   float(nScreenW)   ;
  float   fRateY   =   nPrintH   /   float(nScreenH)   ;

  CBitmap bitmap;
  CClientDC dc(this);
  CDC memdc;
  CRect rect;
  BOOL bRet = FALSE;

  memdc.CreateCompatibleDC(&dc);
  GetClientRect(rect);
  bitmap.CreateCompatibleBitmap(&dc,rect.Width(),rect.Height());

  CBitmap * oldbitmap = memdc.SelectObject(&bitmap);
  bRet = memdc.BitBlt(0,0,rect.Width(),rect.Height(),&dc,0,0,SRCCOPY); 

  CBitmap * Printbitmap;
  Printbitmap = memdc.SelectObject(oldbitmap);

  BITMAP       bmp;      
  bitmap.GetBitmap(&bmp);      

  long       nWidth=bmp.bmWidth;      
  long       nHeight=bmp.bmHeight;  

  VOID   *lpBits=new   BYTE[bmp.bmWidth*bmp.bmHeight*4];
  BITMAPINFO       bmi;
  memset(&bmi,0,sizeof(bmi));
  bmi.bmiHeader.biSize=sizeof(BITMAPINFO);      
  bmi.bmiHeader.biWidth=bmp.bmWidth;      
  bmi.bmiHeader.biHeight=bmp.bmHeight;      
  bmi.bmiHeader.biPlanes=1;      
  bmi.bmiHeader.biBitCount=bmp.bmBitsPixel;      
  bmi.bmiHeader.biCompression=BI_RGB;      
  bmi.bmiHeader.biClrUsed=0;      

  GetDIBits(memdc.m_hDC,   (HBITMAP)   bitmap.m_hObject,   0,   bmp.bmHeight,   lpBits,     (LPBITMAPINFO)   &bmi,   DIB_RGB_COLORS);

 int  nDestWidth = nWidth*fRateX;
 int  nDestHeight = nHeight*fRateY;
 int  xDest = ( nPrintW * fRateX  -  nDestWidth) * 3 / 4;
 int  yDest = nPrintH * fRateY - nDestHeight ;

  ::StretchDIBits(hPrintDC,xDest,yDest,nDestWidth,nDestHeight,0,0,nWidth,nHeight,lpBits,&bmi,DIB_RGB_COLORS,   SRCCOPY)   ;  

  PrintDC.SelectObject(bitmap);

  PrintDC.EndPage();
  PrintDC.EndDoc();
  PrintDC.Detach();

  delete   lpBits;  
 }