QSplashScreen question

[graciano]

Hi,
In the following code ...

#include <QtGui>
int main(int argc, char *argv[])
{
     QApplication app(argc, argv);
     QPixmap pixmap("f0.png");
     QSplashScreen splash(pixmap);
     splash.show();
     app.processEvents();
     //...
     QMainWindow window;
     window.show();
     splash.finish(&window);
     return app.exec();
 
}

#include <QtGui>
int main(int argc, char *argv[])
{
     QApplication app(argc, argv);
     QPixmap pixmap("f0.png");
     QSplashScreen splash(pixmap);
     splash.show();
     app.processEvents();
     //...
     QMainWindow window;
     window.show();
     splash.finish(&window);
     return app.exec();

}

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... isn't it expected a mouse click to close the splash screen?

Or does it mean that i can use the mouse click to close the splash before the QMainWindow finishes loading?

[nish]

can you rephrase your question? i cant understand what you want to ask.

[aamer4yu]

From your code, I guess the splash screen wont be shown.
Read QSplashScreen::finish. You are calling window.show() and setting finish on the window.
try showing the window from a timer... say after 2 seconds. and dont call show in the main function itself.

[nish]

From your code, I guess the splash screen wont be shown.
Read QSplashScreen::finish. You are calling window.show() and setting finish on the window.
try showing the window from a timer... say after 2 seconds. and dont call show in the main function itself.

but this is the correct way... Qt Assitant shows the same example

[mcosta]

This code close the QSplashScreen when the user clicks on it or when the mainwindow is ready to show

[graciano]

This was my interpretation also.
But by the way:

#include <QtGui>
int main(int argc, char *argv[])
{
     QApplication app(argc, argv);
     QPixmap pixmap("f0.png");
     QSplashScreen splash(pixmap);
     splash.show();
     //app.processEvents();
     //...
     QMainWindow window;
     window.show();
     //splash.finish(&window);
     return app.exec();
 
}

#include <QtGui>
int main(int argc, char *argv[])
{
     QApplication app(argc, argv);
     QPixmap pixmap("f0.png");
     QSplashScreen splash(pixmap);
     splash.show();
     //app.processEvents();
     //...
     QMainWindow window;
     window.show();
     //splash.finish(&window);
     return app.exec();

}

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Commented this 2 lines and both splash and main windows open at the same time. Click closes the splash.
Thought this was only possible if using app.processEventes(); !

[nish]

This was my interpretation also.
Thought this was only possible if using app.processEventes(); !

if you read the docs again.. it says that app.processEvents() is used because app.exe() is not called yet. When your mainwindow is shown, app.exe() is called so no need of processEvents().

[graciano]

And in this case:

#include <QtGui/QApplication>
#include "mainwindow.h"
#include <QSplashScreen>
#include <QTimer>
 
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QSplashScreen *splash = new QSplashScreen;
    splash->setPixmap(QPixmap("f0.png"));
    splash->show();
    splash->showMessage(QObject::trUtf8("A preparar a janela principal ..."), Qt::AlignRight|Qt::AlignTop, Qt::black);
    MainWindow w;
    QTimer::singleShot(5000, splash, SLOT(close()));
    QTimer::singleShot(5000, &w, SLOT(show()));
    //delete splash;
    return a.exec();
}

#include <QtGui/QApplication>
#include "mainwindow.h"
#include <QSplashScreen>
#include <QTimer>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QSplashScreen *splash = new QSplashScreen;
    splash->setPixmap(QPixmap("f0.png"));
    splash->show();
    splash->showMessage(QObject::trUtf8("A preparar a janela principal ..."), Qt::AlignRight|Qt::AlignTop, Qt::black);
    MainWindow w;
    QTimer::singleShot(5000, splash, SLOT(close()));
    QTimer::singleShot(5000, &w, SLOT(show()));
    //delete splash;
    return a.exec();
}

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Obviously the commented line could not work ... but where to free the used memory by the splash screen?
Thanks