LimeReport/demo_r2/main.cpp

#include "mainwindow.h"
#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QFile f(":qdarkstyle/style.qss");
    if (!f.exists())
    {
        printf("Unable to set stylesheet, file not found\n");
    }
    else
    {
        f.open(QFile::ReadOnly | QFile::Text);
        QTextStream ts(&f);
        a.setStyleSheet(ts.readAll());
        //a.setStyleSheet("");
    }
    MainWindow w;
    w.show();

    return a.exec();
}