vc设置打印机模式并预览打印

BOOL   CDispDataView::GetDefaultPrinter(LPTSTR   szPrinterName,   int   nPrintNameBufferLen) 
{ 
  *szPrinterName   =   0; 
  CPrintDialog   pd(FALSE); 
  if   (pd.GetDefaults()) 
  { 
    if   (pd.m_pd.hDC)   
     DeleteDC(pd.m_pd.hDC); 
                
                if   (pd.m_pd.hDevNames) 
                { 
                        LPDEVNAMES   pdn   =   (LPDEVNAMES)GlobalLock(pd.m_pd.hDevNames); 
                        nPrintNameBufferLen--; 
                        *(szPrinterName   +   nPrintNameBufferLen)   =   0; 
                        _tcsncpy(szPrinterName,   (LPTSTR)pdn   +   pdn-> wDeviceOffset,   nPrintNameBufferLen);   //打印机名称 
                        GlobalUnlock(pd.m_pd.hDevNames); 
                        GlobalFree(pd.m_pd.hDevNames); 
                } 
        } 
        return   (*szPrinterName); 
}