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                            void __fastcall TForm1::BitBTn1Click(TObject *Sender)
  {
  char *ADevice, *ADriver, *APort;
  THandle DeviceMode;
  PDeviceMode DevMode;
  int length,width;
  length=1400;
  width=2410; //设定自定义纸张的尺寸单位为0.1毫米    
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!-- frame contents --   !-- /frame contents --
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  ADevice =new char[100];
  ADriver =new char[100];
  APort =new char[100];
  //获取打印机
  Printer()-GetPrinter(ADevice, ADriver, APort,DeviceMode);
  //获取PDevMode结构
  DevMode =(_devicemodeA*) GlobalLock((void *)DeviceMode);
  //设定可以修改的值
  DevMode-dmFields = DevMode-dmFieldsDM_PAPERSIZE;
  DevMode-dmFields = DevMode-dmFieldsDM_PAPERLENGTH;
  DevMode-dmFields = DevMode-dmFieldsDM_PAPERWIDTH;
  //设定要修改的值
  DevMode-dmPaperSize=DMPAPER_USER; //设为自定义纸张
  DevMode-dmPaperLength=length;
  DevMode-dmPaperWidth=width;
  //测试打印
  Printer()-BeginDoc();
  TextOut(Printer()-Handle, 0, 0, "-----------------",17);
  Printer()-NewPage();
  TextOut(Printer()-Handle, 0, 0, "++++++++++++++++++",18);
  Printer()-NewPage();
  Printer()-EndDoc();
  }      

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