QSplashScreen Example not working

vezprog

I am trying to implement a slash screen by editing my main file and adding some of the Qt4 example code.

this is what I have:
@
#include <QtGui/QApplication>
#include <QSplashScreen>
#include <QThread>
#include "mainwindow.h"

int main(int argc, char *argv[])
{
// create application instance
QApplication a(argc, argv);

// set up splash screen
QPixmap pixmap("splash.jpg");
QSplashScreen *splash = new QSplashScreen(pixmap);
splash->showMessage("Loading...");

// show splash screen
splash->show();

// sleep for 3 seconds
sleep(3);

// show main window
MainWindow w;
w.show();

// remove splash screen
splash->finish(&MainWindow);
delete splash;

return a.exec&#40;&#41;;

}
@

Now for some reason I am getting and error on the splash->finish(&MainWindow); line stating its expecting a primary expression before the line. This confuses me because splash is the main pointer. This is directly from the Qt Documentation as well.

Any Ideas?

dangelog

@
splash->finish(&w);
@

MainWindow is a type, w a variable of that type. Please consider learning C++ basics before using Qt...

(Also: do not delete your splash screen before hiding it. Just create it on the stack, or find a way to deleteLater() it when it's closed).

Rahul Das

Not related though, in the above code, sleep() is working ?

Rahul Das

I haven't tried though, made a couple of small changes. Might work.

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

class I : public QThread
{
public:
static void sleep(unsigned long secs) {
QThread::sleep(secs);
}
};

int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QPixmap pixmap("splash.jpg");
QSplashScreen *splash = new QSplashScreen(pixmap);
splash->showMessage("Loading...");
splash->show();

I::sleep(3);

MainWindow w;
w.show();
splash->finish(&w);

return a.exec&#40;&#41;;

}@

dangelog

http://developer.qt.nokia.com/wiki/Threads_Events_QObjects#92dd35cc61ffc41d02defdcef071856d

Please.

Rahul Das

[quote author="peppe" date="1313187434"]http://developer.qt.nokia.com/wiki/Threads_Events_QObjects#92dd35cc61ffc41d02defdcef071856d

Please.[/quote]

Thank you Peppe, But,am still curious, how would i use QTimer in the above lines of codes?
I failed to do :(

giesbert

In the above code, it won't help, as you wanted the sleep before the mainwindow pops up.

loladiro

What about
@
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QPixmap pixmap("splash.jpg");
QSplashScreen *splash = new QSplashScreen(pixmap);
splash->showMessage("Loading...");
splash->show();

MainWindow w;
splash->finish(&w);

QTimer t;
t.setInterval(3000);
t.setSingleShot(true);
connect(&t,SIGNAL(timeout()),&w,SLOT(show()));
connect(&t,SINGAL(timeout()),splash,SLOT(close()));
t.start();

return a.exec(&#41;;

}
@
EDIT: Nevermind, I had a wrong conception of finish() worked. I updated the code. It should work now.

Rahul Das

bq. I updated the code. It should work now.

Thanks alot loladiro, will try with this.