#include <iostream>
#include <QApplication>
#include <QPrinter>
#include <QFont>
#include <QFontMetrics>

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QPrinter myPrinter(QPrinter::HighResolution);
    QFont myFont(QFont("Arial",12),&myPrinter);
    QFontMetrics myMetrics(myFont,&myPrinter);
    std::cout << "Line spacing: " << myMetrics.lineSpacing() << std::endl;
    QString myString("Test");
    std::cout << "String width: " << myMetrics.size(0,myString).width() << std::endl;
    return app.exec();
}