QT QSplashScreen

#include "mainwindow.h"

#include <QApplication>

#include <QTextEdit>

#include <QSplashScreen>

#include<QProgressBar>

#include<QTime>

int main(int argc, char *argv[])

{

    QApplication app(argc, argv);

    QSplashScreen splash;

    QTime t0;

    t0.restart();

    splash.setPixmap(QPixmap(":/images/images/logo.png"));

    QProgressBar pb(&splash);

    QRect rect = splash.rect();

    pb.setGeometry(2, rect.height() - 20, rect.width() / 2 - 60, 14);

    pb.setRange(0, 3000);

    splash.show();

    QCoreApplication::processEvents(QEventLoop::AllEvents, 50);

    while (t0.elapsed() < 3000)

    {

        pb.setValue(t0.elapsed());

        app.processEvents();

    }

    pb.setValue(3000);

    app.processEvents();

    MainWindow w;

    w.showMaximized();

    splash.finish(&w);

    return app.exec();

}