QSplashScreen Class

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");

QCoreApplication::processEvents();

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

QCoreApplication::processEvents();

QScreen *screen = QGuiApplication::screens().at(1);
QPixmap pixmap(":/splash.png");
QSplashScreen splash(screen, pixmap);
splash.show();

Member Function Documentation

[explicit] 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(QScreen *screen, const QPixmap &pixmap = QPixmap(), Qt::WindowFlags f = Qt::WindowFlags())

This is an overloaded function.

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

[virtual noexcept] 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.

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

Reimplements: QWidget::event(QEvent *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.

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().

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

Reimplements: QWidget::mousePressEvent(QMouseEvent *event).

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 QCoreApplication::processEvents() 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. This function calls repaint() to make sure the splash screen is repainted immediately. As a result the message is kept up to date with what your application is doing (e.g. loading files).

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