Problem with Splash Screen ?

[vinod]

Hello,

Here is my code. I am trying to display the "Logo" image as a splash screen on top all of my windows. But when executing , the splash screen is displayed on bottom of the main widget. What is the reason ? How can I solve it ?

#include <qapplication.h>
#include "welform.h"
#include <qtimer.h>
#include <qpixmap.h>
#include <qsplashscreen.h>
 
 
int main( int argc, char ** argv )
{
 
 
    QSplashScreen *splash=NULL;
    QApplication a( argc, argv );
    welForm *w;
 
 
    QPixmap logo(QPixmap::fromMimeSource("Logo"));
    splash=new QSplashScreen(logo,Qt::WStyle_StaysOnTop|Qt::WX11BypassWM);
    splash->show();
    QTimer::singleShot(5*1000,splash,SLOT(close()));   
 
    w=new welForm(0,"welForm"); 
    a.setMainWidget(w);
    w->show();
 
    //delete splash;
    //a.connect( &a, SIGNAL( lastWindowClosed() ), &a, SLOT( quit() ) );
   int rc=a.exec();
 
   //splash->finish(w);            this finish() also not work.... so I commented it.
   if(splash)
   delete splash;
 
  return rc;  
}

#include <qapplication.h>
#include "welform.h"
#include <qtimer.h>
#include <qpixmap.h>
#include <qsplashscreen.h>


int main( int argc, char ** argv )
{
    
    
    QSplashScreen *splash=NULL;
    QApplication a( argc, argv );
    welForm *w;
    
    
    QPixmap logo(QPixmap::fromMimeSource("Logo"));
    splash=new QSplashScreen(logo,Qt::WStyle_StaysOnTop|Qt::WX11BypassWM);
    splash->show();
    QTimer::singleShot(5*1000,splash,SLOT(close()));   
  
    w=new welForm(0,"welForm"); 
    a.setMainWidget(w);
    w->show();
  
    //delete splash;
    //a.connect( &a, SIGNAL( lastWindowClosed() ), &a, SLOT( quit() ) );
   int rc=a.exec();
   
   //splash->finish(w);            this finish() also not work.... so I commented it.
   if(splash)
   delete splash;
    
  return rc;  
}

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thanks in advance............

A S Vinod

[wysota]

Try this:

QApplication app(argc, argv);
QSplashScreen *splashscreen = new QSplashScreen(QPixmap::fromMimeSource("Logo"), Qt::WDestructiveClose|Qt::WStyle_StaysOnTop); // no need for other flags
splashscreen->show();
app.processEvents(); // this should make the splash appear
welForm *w = new welForm(0,"welForm"); 
app.setMainWidget(w);
w->show();
QTimer::singleShot(5000,splashscreen,SLOT(close())); // timer needs the event queue
return app.exec();

QApplication app(argc, argv);
QSplashScreen *splashscreen = new QSplashScreen(QPixmap::fromMimeSource("Logo"), Qt::WDestructiveClose|Qt::WStyle_StaysOnTop); // no need for other flags
splashscreen->show();
app.processEvents(); // this should make the splash appear
welForm *w = new welForm(0,"welForm"); 
app.setMainWidget(w);
w->show();
QTimer::singleShot(5000,splashscreen,SLOT(close())); // timer needs the event queue
return app.exec();

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[vinod]

Hello,

I had tried your code. But the result was same. The splash screen always appeared below to the main window.


So what will be he exact problem....


Vinod

[wysota]

Did you pass any window flags to the main window?

[vinod]

No , I didn't pass any arguments to main window...

But , now I solve the problem.

By just calling the finish(mainWindow) function of SplashScreen class before calling show(mainWindow).

Here is the working code :-

int main( int argc, char ** argv )
{
 
   QApplication a( argc, argv );
 
 
    QSplashScreen *splash=new             
QSplashScreen(QPixmap::fromMimeSource("Logo"),Qt::WDestructiveClose|Qt::WStyle_StaysOnTop);
    splash->show();
    a.processEvents();
    welForm *w=new welForm(0,"welForm"); 
    a.setMainWidget(w);
    splash->finish(w);    
    w->show();
 
    QTimer::singleShot(10000,splash,SLOT(close()));   
     return a.exec();
}

int main( int argc, char ** argv )
{
  
   QApplication a( argc, argv );
        
    
    QSplashScreen *splash=new             
QSplashScreen(QPixmap::fromMimeSource("Logo"),Qt::WDestructiveClose|Qt::WStyle_StaysOnTop);
    splash->show();
    a.processEvents();
    welForm *w=new welForm(0,"welForm"); 
    a.setMainWidget(w);
    splash->finish(w);    
    w->show();

    QTimer::singleShot(10000,splash,SLOT(close()));   
     return a.exec();
}

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Thank You...

[yabadabadoo]

hello...
i am trying to display a splash screen before my application starts. But it is not displaying SplashScreen. given below is my code.

#include <QApplication>
 
#include "client.h"
 
int main(int argc, char *argv[])
{
	QApplication app(argc, argv);
	QPixmap pixmap("redcross.png");
	QSplashScreen *splash = new QSplashScreen(pixmap);
	splash->show();
	app.processEvents(); 
	splash->showMessage("Loaded modules");
 
	client client;//inherited from QDialog
	splash->finish(&client); 
	client.show();
 
	QTimer::singleShot(5000,splash,SLOT(close())); // timer needs the event queue
 
	return app.exec();
}

#include <QApplication>

#include "client.h"

int main(int argc, char *argv[])
{
	QApplication app(argc, argv);
	QPixmap pixmap("redcross.png");
	QSplashScreen *splash = new QSplashScreen(pixmap);
	splash->show();
	app.processEvents(); 
	splash->showMessage("Loaded modules");
	
	client client;//inherited from QDialog
	splash->finish(&client); 
	client.show();
	
	QTimer::singleShot(5000,splash,SLOT(close())); // timer needs the event queue
	
	return app.exec();
}

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thanx

[wysota]

I tested the code and it worked for me. Maybe the problem is that you use a relative path to the redcross.png image? If QSplashScreen can't find it, it won't be displayed.

[yabadabadoo]

yes.... that was the problem... thank you very much..

[Prashant Kumar]

can i use finish before calling show() on the mainwindow?

[anda_skoa]

can i use finish before calling show() on the mainwindow?

That is what the code in post #6 does, isn't it?.

Cheers,
_

[kachhadiyatushar]

Hello,

I am running QSplashscreen over my Qt application. I am setting five different images on each second with numeric data. After running few hours it just shows me a black popup without image. The pixmap loading images and setting on splash but, It shows me black screen for 5 seconds. If you guys have any solution for this issue, kindly help me.

Thanks

Tushar