int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QPixmap pixmap(":/splash.png");
    QSplashScreen splash(pixmap);
    splash.show();
    app.processEvents();
    ...
    QMainWindow window;
    window.show();
    splash.finish(&window);
    return app.exec();
}

QPixmap pixmap(":/splash.png");
QSplashScreen *splash = new QSplashScreen(pixmap);
splash->show();

... // Loading some items
splash->showMessage("Loaded modules");

qApp->processEvents();

... // Establishing connections
splash->showMessage("Established connections");

qApp->processEvents();

Member Function Documentation

QSplashScreen::QSplashScreen(const QPixmap &pixmap = QPixmap(), Qt::WindowFlags f = Qt::WindowFlags())

Construct a splash screen that will display the pixmap.

There should be no need to set the widget flags, f, except perhaps Qt::WindowStaysOnTopHint.

QSplashScreen::QSplashScreen(QWidget *parent, const QPixmap &pixmap = QPixmap(), Qt::WindowFlags f = Qt::WindowFlags())

This is an overloaded function.

This function allows you to specify a parent for your splashscreen. The typical use for this constructor is if you have a multiple screens and prefer to have the splash screen on a different screen than your primary one. In that case pass the proper desktop() as the parent.

[virtual] QSplashScreen::~QSplashScreen()

Destructor.

[slot] void QSplashScreen::clearMessage()

Removes the message being displayed on the splash screen

See also showMessage().

[virtual protected] void QSplashScreen::drawContents(QPainter *painter)

Draw the contents of the splash screen using painter painter. The default implementation draws the message passed by showMessage(). Reimplement this function if you want to do your own drawing on the splash screen.

[virtual protected] bool QSplashScreen::event(QEvent *e)

Reimplemented from QObject::event().

void QSplashScreen::finish(QWidget *mainWin)

Makes the splash screen wait until the widget mainWin is displayed before calling close() on itself.

QString QSplashScreen::message() const

Returns the message that is currently displayed on the splash screen.

This function was introduced in Qt 5.2.

See also showMessage() and clearMessage().

[signal] void QSplashScreen::messageChanged(const QString &message)

This signal is emitted when the message on the splash screen changes. message is the new message and is a null-string when the message has been removed.

See also showMessage() and clearMessage().

[virtual protected] void QSplashScreen::mousePressEvent(QMouseEvent *)

Reimplemented from QWidget::mousePressEvent().

const QPixmap QSplashScreen::pixmap() const

Returns the pixmap that is used in the splash screen. The image does not have any of the text drawn by showMessage() calls.

See also setPixmap().

void QSplashScreen::repaint()

This overrides QWidget::repaint(). It differs from the standard repaint function in that it also calls QApplication::flush() to ensure the updates are displayed, even when there is no event loop present.

void QSplashScreen::setPixmap(const QPixmap &pixmap)

Sets the pixmap that will be used as the splash screen's image to pixmap.

See also pixmap().

[slot] void QSplashScreen::showMessage(const QString &message, int alignment = Qt::AlignLeft, const QColor &color = Qt::black)

Draws the message text onto the splash screen with color color and aligns the text according to the flags in alignment.

To make sure the splash screen is repainted immediately, you can call QCoreApplication's processEvents() after the call to showMessage(). You usually want this to make sure that the message is kept up to date with what your application is doing (e.g., loading files).

See also Qt::Alignment, clearMessage(), and message().