///Functions description£ºpaper cut
///Parameter description£ºPortNo£¬serial port 1->COM1 2->COM2 3->COM3 etc.  Baudrate,9600,19200,38400,115200 £»the same below
///Returned value : 0£ºsucceed Not 0£ºfail   £»the same below

long CutPaper(long PortNo, long Baud);  ///for example: CutPaper(1,9600);  ///serial port 1£¬Baudrate 9600

////Fuction description£ºfeed paper iMn mm
///Parameter description£ºiMm£¬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£ºprint character string 
///Parameter description£ºStrToPrint, 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£ºset the multiple of the character 
///Parameter description£ºxSize 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£ºprint code39 bar code
///Parameter description£ºStrBarcode  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£ºSet set the multiple of the character
///Parameter description£º
////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) 
