58小票机打印动态库和代码 通过调用ESCPOS命令，打印文字，条码

#ifdef COMPILE_FOR_WINDOWS #include "print.h" #include <iostream> #include <ctime> #include <string> #include <qmessagebox.h> #include <qlibrary.h> #include <qthread.h> #include <qeventloop.h> #include <QDebug> using namespace std; #include "qtcpserver.h" print::print() { hPort=NULL; //句柄 } bool print::start (int caozuo ,int type, QString com, QString bote,QString lpt , QString usb , QString ip , QString str) { _caozuo = caozuo; _device.printtype = type; _device.com = com.toStdString(); _device.BawdRate = bote.toInt(); _device.DataBits=8; _device.StopBits=ONESTOPBIT; _device.Parity=NOPARITY; //NONE _device.ReceiveBuffer=256; _device.lpt = lpt.toStdString(); _device.usb = usb.toStdString(); _device.ip = ip.toStdString(); _print_text = str; //usb QLibrary mylib("./lg.dll"); //声明所用到的dll文件 if (mylib.load()) //判断是否正确加载 { qDebug()<<"DLL load is OK!"; typedef QString (*Fun)(QString ); //定义函数指针，以备调用 Fun open=(Fun)mylib.resolve("find_path"); //援引 add() 函数 if (open) //是否成功连接上 add() 函数 { qDebug()<<"Link to Function is OK!"; QString usbstr = QString::fromStdString(_device.usb); usbstr = usbstr.toLower().section("usb",1,1); _device.usb = open(usbstr).toStdString(); } else qDebug()<<"Linke to Function is not OK!!!!"; } else qDebug()<<"DLL is not loaded!"; if( InitPort() ) //初始化打印机端口 { return false; } return true; } print::~print() { WriteData("\x1b\x44\x00",3); CloseHandle(hPort);//关闭端口 } bool print::InitPort() { const char *sLinkName = _device.com.c_str(); switch ( _device.printtype ) { case 0://串 sLinkName = _device.com.c_str(); break; case 1://并 sLinkName = _device.lpt.c_str(); break; case 2://usb sLinkName= _device.usb.c_str(); break; default: sLinkName = _device.com.c_str(); break; } WCHAR wstr[MAX_PATH]={0}; int returnValue = MultiByteToWideChar(CP_ACP, 0, sLinkName, -1, wstr, sizeof(wstr)); qDebug()<<"sLinkName"<<sLinkName << QString::number(returnValue); if(_device.printtype==1) //并口 { hPort = CreateFile(wstr, GENERIC_READ | GENERIC_WRITE, NULL, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, NULL); //hPort =CreateFile(wstr, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); } else { hPort =CreateFile(wstr, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);/* CreateFile(wstr, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );*/ } if (hPort == INVALID_HANDLE_VALUE) { // QString error = QString("打开端口、串口、usb失败,%1,%2").arg(_device.printtype).arg(sLinkName) ; // QMessageBox msgBox; // msgBox.setText( error ); // msgBox.exec(); return false; } else { //设置端口缓冲 SetupComm(hPort, 0, 0); // 设定通讯端口超时参数 COMMTIMEOUTS tmouts; tmouts.ReadIntervalTimeout = 100; tmouts.ReadTotalTimeoutMultiplier = 100; tmouts.ReadTotalTimeoutConstant = 100; tmouts.WriteTotalTimeoutConstant = 100; tmouts.WriteTotalTimeoutMultiplier = 100; SetCommTimeouts(hPort, &tmouts); //设定通讯端口通讯参数 DCB dcb; BOOL bol = TRUE; //dcb.DCBlength = sizeof(dcb); bol=GetCommState(hPort, &dcb); dcb.BaudRate = _device.BawdRate; dcb.ByteSize = _device.DataBits; dcb.StopBits = _device.StopBits; dcb.Parity = _device.Parity; bol = SetCommState(hPort, &dcb); //配置串口 qDebug() << "bol" << bol; // 清除通讯端口缓存 bool bol2 = PurgeComm(hPort, PURGE_TXCLEAR | PURGE_RXCLEAR | PURGE_TXABORT | PURGE_RXABORT); qDebug() << "bol2" << bol2; // 初始化重叠IO对象 OVERLAPPED m_OverlappedRead; OVERLAPPED m_OverlappedWrite; HANDLE m_hStopCommEvent; HANDLE m_hDataReady; memset(&m_OverlappedRead, 0, sizeof(OVERLAPPED)); m_OverlappedRead.hEvent = CreateEvent(NULL, FALSE, FALSE, NULL); memset(&m_OverlappedWrite, 0, sizeof(OVERLAPPED)); m_OverlappedWrite.hEvent = CreateEvent(NULL, FALSE, FALSE, NULL); // 初始化事件对豿 m_hStopCommEvent = CreateEvent(NULL, TRUE, FALSE, NULL); m_hDataReady = CreateEvent(NULL, FALSE, FALSE, NULL); if(_device.printtype == 1)//并口 { //初始化打印ESC @ //DWORD iBytesLength; char chInitCode[] = "\x0D\x1B\x40"; bk_flag = true; if( !Lpt_writedata(chInitCode, 3) ) { qDebug()<<"并口打印机未开"; } } else if(_device.printtype == 2) { //初始化打印ESC @ DWORD iBytesLength; char chInitCode[] = "\x0D\x1B\x40"; if( !WriteFile(hPort, chInitCode, (DWORD)3L, &iBytesLength, NULL) ) { qDebug()<<"usb打印机未开"; } } else //串口 { //初始化打印ESC @ DWORD iBytesLength; char chInitCode[] = "\x0D\x1B\x40"; WriteFile(hPort, chInitCode, (DWORD)3L, &iBytesLength, NULL); } } return 0; } bool print::NewRow() { std::string temp = "\x0A"; return WriteData(temp); } bool print::NewRow(int iRow) { bool Result = false; for (int i = 0; i < iRow; i++) { Result = NewRow(); if (!Result) break; } return Result; } bool print::CutPaper() { char temp[] = { 0x1d, 0x56, 0x01 }; bool r = WriteData(temp, 3); return r; } bool print::OpenCashbox(){ string s = "\x1B\x70\x30\x32\xC8"; return WriteData(s); } bool print::stopPrint() { string s = "\x1D\x99"; return WriteData(s); } bool print::WriteData(string meg) { bool ww = true; int type = _device.printtype; DWORD dwWrite; switch(type) { case 0://串 ww = WriteFile(hPort, meg.c_str(), (DWORD)meg.length(), &dwWrite, NULL); break; case 2://usb ww = WriteFile(hPort, meg.c_str(), (DWORD)meg.length(), &dwWrite, NULL); break; case 1://并口 ww = Lpt_writedata(meg); //qDebug()<<"enter 11111111111111111"; //ww = WriteFile(hPort, meg.c_str(), (DWORD)meg.length(), &dwWrite, NULL); break; default://默认串口 ww = WriteFile(hPort, meg.c_str(), (DWORD)meg.length(), &dwWrite, NULL); break; } return ww; } bool print::WriteData(string meg, int len) { bool ww = true; int type = _device.printtype; DWORD dwWrite; switch (type) { case 0://串 ww = WriteFile(hPort, meg.c_str(), (DWORD)len, &dwWrite, NULL); break; case 2://usb ww = WriteFile(hPort, meg.c_str(), (DWORD)len, &dwWrite, NULL); break; case 1://并口 ww = Lpt_writedata(meg, len); //ww = WriteFile(hPort, meg.c_str(), (DWORD)len, &dwWrite, NULL); break; default://默认串口 ww = WriteFile(hPort, meg.c_str(), (DWORD)len, &dwWrite, NULL); break; } return