How to display a splash screen in Qt

Article Metadata

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Tested with

Devices(s): Emulator

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Compatibility

Platform(s): S60 3rd Edition FP1, S60 3rd Edition FP2, S60 5th Edition

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Article

Keywords: QSplashScreen

Created: james1980 (12 Jan 2009)

Last edited: hamishwillee (11 Oct 2012)

Overview

This code snippet demonstrates how to display a splash screen before your application loaded using QSplashScreen.

A splash screen is a widget that is usually displayed when an application is being started. Splash screens are often used for applications that have long start up times (e.g. database or networking applications that take time to establish connections) to provide the user with feedback that the application is loading. The splash screen may usually appear in the center of the screen.

Preconditions

• Download and install the Qt SDK

Various Function

• Makes the splash screen wait until the widget mainWin is displayed

 splash.finish(&window);

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

splash.showMessage("Wait...");

Source File

#include <QApplication>
#include <QPixmap>
#include <QSplashScreen>
#include <QWidget>
#include <QMainWindow>
int main(int argc, char *argv[])
{
     QApplication app(argc, argv);
     QPixmap pixmap("c://designer.png");
     QSplashScreen splash(pixmap);
     splash.show();
     splash.showMessage("Wait...");
     qApp->processEvents();//This is used to accept a click on the screen so that user can cancel the screen
 
     QMainWindow window;
     window.setStyleSheet("* { background-color:rgb(199,147,88); padding: 7px}");
 
     window.show();
     splash.finish(&window);
     return app.exec();
 
}

Screenshot

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