///Functions description：paper cut
///Parameter description：PortNo，serial port 1->COM1 2->COM2 3->COM3 etc.  Baudrate,9600,19200,38400,115200 ；the same below
///Returned value : 0：succeed Not 0：fail   ；the same below

long CutPaper(long PortNo, long Baud);  ///for example: CutPaper(1,9600);  ///serial port 1，Baudrate 9600

////Fuction description：feed paper iMn mm
///Parameter description：iMm，unit mm，the printer feed paper

long FeedPaper(long PortNo, long Baud, long iMm);  ///for example: FeedPaper(1,9600,10);  ///serial port1，Baudrate 9600，Feed paper 10mm

////Fuction description：print character string 
///Parameter description：StrToPrint, typewirtten character string, the following with Enter, print character string immediately, the following without Enter, full line or the command FeedPaper, print character string
///len, character string length, includes the length of Enter, for example "123456789\n"，the length is 10

long PrintString(long PortNo, long Baud, LPCTSTR StrToPrint, long len);


////Functions description：set the multiple of the character 
///Parameter description：xSize horizontal direction，0-1 times，1-2 times，。。。。，7-8 times 
 //////      ySize vertical direction，0-1times，1-2times，。。。。，7-8times

long SetFontSize(long PortNo, long Baud, long xSize, long ySize) 



////Fuction description：print code39 bar code
///Parameter description：StrBarcode  need to print character string to bar code，for example "0123456789123"
 //////      len :  the length of character string，also the length of StrBarcode 

long PrintCode39(long PortNo, long Baud, LPCTSTR StrBarcode, long len) 



////Fuction description：Set set the multiple of the character
///Parameter description：
////Affect width width 2~6  set according to result，usually，get 3，if too much, get 2
////Affect height height 1~255  picture element point height 

long CPRINTOCXCtrl::SetBarSize(long PortNo, long Baud, long Width, long Height)