Problem with Splash Screen ?

[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

[d_stranz]

Don't hijack old threads for a new post, please.

My crystal ball is at work, so I can't use it. And without my crystal ball, I can't see the invisible code you have posted to show what you are doing. And since I can't see the invisible code, I can't give you any suggestions for what might be wrong, but I have a pretty good idea. Sorry.

[kachhadiyatushar]

#ifndef TIMER_H
#define TIMER_H

#include <QTimer>
#include <QDebug>
#include <QSplashScreen>
#include <QPixmap>
#include <QPainter>

class timer_s: public QTimer
{
Q_OBJECT

public:
int timePassed;
QSplashScreen *splash;
float temp;
QFont splashfont;
QString tem,Con_tem,TClock,Snap_Smiley_Image_Path;
QByteArray ab,Con_ab;
QByteArray ba;
int i1,i2;
const char* mychar;
const char* Conv_char;
float a, b;
Qt::Alignment align,align2;
float LowtempC,HightempC;
float HightempF,LowtempF,DisableRedC;
QPixmap InitImage;
QPainter painter;

explicit timer_s(QObject *parent = 0) : QTimer(parent)
{
splash = new QSplashScreen();
}

private slots:

void tick()
{
if(timePassed == 8)
splash->show();
if(timePassed == 0)
{
splash->close();
splash->deleteLater();
stop();
deleteLater();
}
else
{
InitImage.load(""+Snap_Smiley_Image_Path+QString("/timer-%1.png").arg(timePassed)+"");
splash->setPixmap(InitImage);
timePassed--;
}
}

void CelsToF()//F temp to C
{
if((TClock == "false" && timePassed == 5) || (TClock == "true" && timePassed == 2))
{
splashfont.setFamily("Helvetica Neue Regular");
splashfont.setPixelSize(110);
DisableRedC = HightempC;
i1 = tem.count();
ab = tem.toLatin1().insert(i1,"°C");
align = Qt::AlignVCenter|Qt::AlignRight;
mychar = ab.data();
Con_tem = QString::number(temp);
i2 = Con_tem.count();
Con_ab = Con_tem.toLatin1().insert(i2,"°F");
align2 = Qt::AlignVCenter|Qt::AlignRight;
Conv_char = Con_ab.data();//Convert C to F End
splash->show();
}
if(timePassed == 0)
{
splash->close();
splash->deleteLater();
tem.clear();
HightempC = 0;
LowtempC = 0;
a = 0;
b = 0;
stop();
memset(&Conv_char, 0, sizeof(Conv_char));
memset(&mychar, 0, sizeof(mychar));
deleteLater();
}
if(tem.toFloat() >= HightempC && DisableRedC != -999 && timePassed != 0)
{
if(timePassed == 5 || (TClock == "true" && timePassed == 2)){
splash->showMessage(tr(mychar),align,Qt::white);
splash->setFont(splashfont);
}
if(TClock == "true" && (timePassed == 2 || timePassed == 1))
InitImage.load(""+Snap_Smiley_Image_Path+QString("/high%1.png").arg(timePassed)+"");
else
InitImage.load(""+Snap_Smiley_Image_Path+QString("/high%1.png").arg(timePassed)+"");
painter.begin(&InitImage);//Display Other Temp on Top Right Start
painter.setPen(Qt::white);
painter.setFont(QFont("Helvetica Neue Regular",22));
painter.drawText(InitImage.rect(),Qt::AlignTop|Qt: :AlignRight,Conv_char);//Display Other Temp on Top Right end
painter.end();
splash->setPixmap(InitImage);
}
else if(tem.toFloat() <= LowtempC && DisableRedC != -999 && timePassed != 0)
{
InitImage.load(""+Snap_Smiley_Image_Path+QString("/invalid%1.png").arg(timePassed)+"");
splash->setPixmap(InitImage);
}
else
{
if(timePassed == 5 || (TClock == "true" && timePassed == 2)){
splash->showMessage(tr(mychar),align,Qt::white);
splash->setFont(splashfont);
}
if(timePassed != 0)
{
if(TClock == "true" && (timePassed == 2 || timePassed == 1))
InitImage.load(""+Snap_Smiley_Image_Path+QString("/valid%1.png").arg(timePassed)+"");
else
InitImage.load(""+Snap_Smiley_Image_Path+QString("/valid%1.png").arg(timePassed)+"");
painter.begin(&InitImage);//Display Other Temp on Top Right Start
painter.setPen(Qt::white);
painter.setFont(QFont("Helvetica Neue Regular",22));
painter.drawText(InitImage.rect(),Qt::AlignTop|Qt: :AlignRight,Conv_char);//Display Other Temp on Top Right end
painter.end();
splash->setPixmap(InitImage);
}
}
timePassed--;
}

void validtemp()
{
if((TClock == "false" && timePassed == 5) || (TClock == "true" && timePassed == 2))
{
splashfont.setFamily("Helvetica Neue Regular");
splashfont.setPixelSize(110);
//splashfont.setBold(true);
//tem = QString::number(temp);
tem = QString::number(temp,'f',1/*floor(b*10.0)/10.0*/);
i1 = tem.count();
ab = tem.toLatin1().insert(i1,"°F");
align = Qt::AlignVCenter|Qt::AlignRight;
mychar = ab.data();
a = temp - 32;
b = a * 5/9;
Con_tem = QString::number(b,'f',1/*floor(b*10.0)/10.0*/);
i2 = Con_tem.count();
Con_ab = Con_tem.toLatin1().insert(i2,"°C");
align2 = Qt::AlignRight|Qt::AlignBottom;
Conv_char = Con_ab.data();
splash->show();
}
if(timePassed == 0)
{
//qDebug()<< timePassed;
splash->close();
splash->deleteLater();
HightempF = 0;
LowtempF = 0;
temp = 0;
stop();
memset(&Conv_char, 0, sizeof(Conv_char));
memset(&mychar, 0, sizeof(mychar));
deleteLater();
}
if(temp >= HightempF && HightempF != -999 && timePassed != 0)
{
if(timePassed == 5 || (TClock == "true" && timePassed == 2)){
splash->showMessage(tr(mychar),align,Qt::white);
splash->setFont(splashfont);
}
if(TClock == "true" && (timePassed == 2 || timePassed == 1))
InitImage.load(""+Snap_Smiley_Image_Path+QString("/high%1.png").arg(timePassed)+"");
else
InitImage.load(""+Snap_Smiley_Image_Path+QString("/high%1.png").arg(timePassed)+"");
painter.begin(&InitImage);
painter.setPen(Qt::white);
painter.setFont(QFont("Helvetica Neue Regular",22));
painter.drawText(InitImage.rect(),Qt::AlignTop|Qt: :AlignRight,Conv_char);
painter.end();
splash->setPixmap(InitImage);
}
else if(temp <= LowtempF && HightempF != -999 && timePassed != 0)
{
InitImage.load(""+Snap_Smiley_Image_Path+QString("/invalid%1.png").arg(timePassed)+"");
splash->setPixmap(InitImage);
}
else
{
if(timePassed == 5 || (TClock == "true" && timePassed == 2)){
splash->showMessage(tr(mychar),align,Qt::white);
splash->setFont(splashfont);
}
if(timePassed != 0)
{
if(TClock == "true" && (timePassed == 2 || timePassed == 1))
InitImage.load(""+Snap_Smiley_Image_Path+QString("/valid%1.png").arg(timePassed)+"");
else
InitImage.load(""+Snap_Smiley_Image_Path+QString("/valid%1.png").arg(timePassed)+"");
painter.begin(&InitImage);
painter.setPen(Qt::white);
painter.setFont(QFont("Helvetica Neue Regular",22));
painter.drawText(InitImage.rect(),Qt::AlignTop|Qt: :AlignRight,Conv_char);
painter.end();
splash->setPixmap(InitImage);
}
}
timePassed--;
}
};

#endif // TIMER_H


This is my code kindly check it and let me know if anything wrong in it.

Thanks

[d_stranz]

Sorry, no. Your code is unreadable. However, from just glancing at it, it appears you do not understand at all how a QTimer should be used but it is impossible to read unformatted code.

Post a new thread, and put your code formatted with proper indentation inside of CODE tags (as explained in my signature below) and then I will take a look after I can read it.

I won't respond to any more messages posted in this thread.