It's work!

#include <QApplication>
#include "oposfiscalprinter_cco.h"
#include <QTextCodec>
#include <QTextStream>

using namespace OposFiscalPrinter_CCO;

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    IOPOSFiscalPrinter *printer = new IOPOSFiscalPrinter();
    printer->setControl("{CCB90072-B81E-11D2-AB74-0040054C3719}");
    printer->Open("ATOLFptr.1");
    printer->ClaimDevice(100);
    printer->SetDeviceEnabled(true);

    printer->SetFiscalReceiptType(4);
    printer->BeginFiscalReceipt(false);

    QString desc = QString("test абвгдеёжз");
    QTextCodec *codec = QTextCodec::codecForName("IBM 866");

    QTextStream in(codec->fromUnicode(desc), QIODevice::ReadOnly | QIODevice::Text);
    printer->PrintRecItem(in.readLine(), 0, 1000, 0, 100, QString("ps"));

    printer->PrintRecTotal(100, 100, QString::number(1));
    printer->EndFiscalReceipt(false);

    return 0;
}