From main.cpp

@
#include "mainwindow.h"
#include <QApplication>
#include <QSplashScreen>
#include "testsplashscreen.h"

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

testSplashScreen *splashScreen = new testSplashScreen();
splashScreen->setPixmap(QPixmap(":/loading.gif"));
splashScreen->setTextArea(QRect(210, 145, 400, 57));
splashScreen->show();
QFont splashFont;
splashFont.setFamily("Ariel");
splashFont.setPixelSize(10);
splashScreen->setFont(splashFont);
qApp->processEvents();
splashScreen->setTextMessage(QObject::tr("Initializing....."), Qt::white);
// Load Configuration files here...
splashScreen->setTextMessage(QObject::tr("Building Menu...."), Qt::white);
// build gui 
qApp->processEvents();
MainWindow w;
w.show();
splashScreen->finish(&w);
return a.exec();

}
@

From mainwindow.cpp

@
#include "mainwindow.h"

MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
}

MainWindow::~MainWindow()
{

}
@

From testsplashscreen.cpp
@
#include "testsplashscreen.h"
#include <QPainter>

testSplashScreen::testSplashScreen(QWidget *parent) : QSplashScreen(parent)
{
setWindowFlags(Qt::WindowStaysOnTopHint | Qt::SplashScreen);
}

void testSplashScreen::setTextArea(QRect Area, int Alignment)
{
splashRect = Area;
Alignment = Alignment;
}

void testSplashScreen::setTextMessage(QString message, QColor color)
{
splashMessage = message;
splashColor = color;
showMessage(splashMessage, splashAlignment, splashColor);
}

void testSplashScreen::drawContents(QPainter *painter)
{
painter->setPen(splashColor);
painter->drawText(splashRect, splashAlignment, splashMessage);
}
@

From testsplashscreen.h

@
#include "testsplashscreen.h"
#include <QPainter>

testSplashScreen::testSplashScreen(QWidget *parent) : QSplashScreen(parent)
{
setWindowFlags(Qt::WindowStaysOnTopHint | Qt::SplashScreen);
}

void testSplashScreen::setTextArea(QRect Area, int Alignment)
{
splashRect = Area;
Alignment = Alignment;
}

void testSplashScreen::setTextMessage(QString message, QColor color)
{
splashMessage = message;
splashColor = color;
showMessage(splashMessage, splashAlignment, splashColor);
}

void testSplashScreen::drawContents(QPainter *painter)
{
painter->setPen(splashColor);
painter->drawText(splashRect, splashAlignment, splashMessage);
}
@

From mainwindow.h

@
#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>

class MainWindow : public QMainWindow
{
Q_OBJECT

public:
MainWindow(QWidget *parent = 0);
~MainWindow();
};

#endif // MAINWINDOW_H
@

From splashScreen.pro
@
#-------------------------------------------------

Project created by QtCreator 2014-02-15T13:52:27

#-------------------------------------------------

QT += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = splashScreen
TEMPLATE = app

SOURCES += main.cpp
mainwindow.cpp
testsplashscreen.cpp

HEADERS += mainwindow.h
testsplashscreen.h

RESOURCES +=
testSplashScreen.qrc
@

This code will demonstrate the issues I'm having, if the splash screen is even displayed its for just a flash less than 1/2 second. The problem is that all the processing is completed before the screen will show. If you comment out the a.exec(); then absoulutely nothing is displayed at all which indicates that the QSplashScreen does not perform until the apps exec function is called.

Thanks for the help.

More seriously, it should indeed work calling only processEvents().

Do you have the same behavior with documentation's example ?

I've done some more testing, if I comment out the code to create the main window and basically draw the splash screen and exit it works as expected messages get updated, etc, however if I comment out app.exec() then the splace screen does not display. I'm not sure if its a bug in 5.2.0, a design flaw in the splash code logic or I can't just wrap my head around it but IMO the splash screen should be able to be displayed and updated by calling app.processevents(); whether or not app.exec(); has been called or not. I'll post more when I get 5.2.x installed.

Thanks

End result, the code works, however the splash screen is only displayed for maybe a 1/2 second and dissapears due to splashScreen.finish(); I assume.

Further note, I am running ubuntu 13.10 which installs 5.0.2, 14.04 is due out in a few weeks which pushes the 5.2.x series maybe I'll force the update to see if by chances its a glitch that has been fixed already.

Thanks again.

From the docs

@
QApplication app(argc, argv);
QPixmap pixmap(":/splash.png");
QSplashScreen splash(pixmap);
splash.show();
app.processEvents(); << this is what you might be missing
...
QMainWindow window;
window.show();
splash.finish(&window);
return app.exec();@

Hope it helps