QT设计开机启动画面，【转载】亲测成功

#include <QApplication>
#include <QSplashScreen>
#include <QPixmap>
#include <mainwindow.h>
#include <QDebug>
#include <QElapsedTimer>
#include <QDateTime>

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

    QPixmap pixmap("img/logo.jpg");
    QSplashScreen screen(pixmap);
    screen.show();
    screen.showMessage("LOVE", Qt::AlignCenter, Qt::red);
#if 0
    int delayTime = 5;
    QElapsedTimer timer;
    timer.start();
    while(timer.elapsed() < (delayTime * 1000))
    {
         app.processEvents();
    }
#endif

#if 0
    QDateTime n=QDateTime::currentDateTime();
    QDateTime now;
    do{
        now=QDateTime::currentDateTime();
        app.processEvents();
    } while (n.secsTo(now)<=5);//5为需要延时的秒数
#endif

    MainWindow window;
    window.show();

    screen.finish(&window);

    return app.exec();
}

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QTextEdit>
#include <QDateTime>
#include <QCoreApplication>

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    QTextEdit *edit=new QTextEdit;
    edit->setText("Splash Example!");
    setCentralWidget(edit);
    resize(600,450);

    QDateTime n=QDateTime::currentDateTime();
    QDateTime now;
    do{
        now=QDateTime::currentDateTime();
        QCoreApplication::processEvents();
    } while (n.secsTo(now)<=5);//5为需要延时的秒数
    ui->setupUi(this);
}

MainWindow::~MainWindow()
{
    delete ui;
}
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QTextEdit>
#include <QDateTime>
#include <QCoreApplication>

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    QTextEdit *edit=new QTextEdit;
    edit->setText("Splash Example!");
    setCentralWidget(edit);
    resize(600,450);

    QDateTime n=QDateTime::currentDateTime();
    QDateTime now;
    do{
        now=QDateTime::currentDateTime();
        QCoreApplication::processEvents();
    } while (n.secsTo(now)<=5);//5为需要延时的秒数
    ui->setupUi(this);
}

MainWindow::~MainWindow()
{
    delete ui;
}