How to start an action at application launch ?

Hi All,

I have successfully implemented the progress bar example below but would like to eliminate the need for the start button !

I would like the progressBar to start as soon as the application is launched & close when the progress bar has been completed ??

Is this possible ? Can you please give a little detialed answers of how to implement this please ?

Many thanks in advance,

Fassage

Code:

---

****************************************************************************/
#ifndef FORM1_H
#define FORM1_H
 
#include <qdialog.h>
#include <qtimer.h>
 
class QProgressBar;
class QPushButton;
 
class Form1 : public QDialog
{
    Q_OBJECT
 
public:
        Form1( QWidget* parent = 0, const char* name = 0, bool modal = FALSE, WFlags fl = 0 );
        ~Form1();
 
        QPushButton *sb;
        QProgressBar* pb;
        QTimer timer;
 
protected slots:
        void myiter();
        void mystart();
};
 
#endif // FORM1_H
 
****************************************************************************/
#include "form1.h"
#include <qpushbutton.h>
#include <qprogressbar.h>
#include <qtimer.h>
 
Form1::Form1( QWidget* parent, const char* name, bool modal, WFlags fl ) : QDialog( parent, name, modal, fl )
{
        sb = new QPushButton( "&Start", this );
        pb = new QProgressBar( this );
        pb->setGeometry( QRect( 100, 0, 500, 30 ) );
        pb->setTotalSteps( 10 );
        pb->reset();
 
        connect( sb, SIGNAL( clicked() ), this, SLOT( mystart() ) );
        connect( &timer, SIGNAL( timeout() ), this, SLOT( myiter() ) );
}
 
Form1::~Form1() {};
void Form1::mystart() { if ( !timer.isActive() ) { timer.start(400); } else { timer.stop(); } }
void Form1::myiter() { int i = pb->progress(); pb->setProgress( ++i ); }
 
#include <qapplication.h>
#include "form1.h"
 
****************************************************************************/
int main( int argc, char ** argv )
{
    QApplication a( argc, argv );
    Form1 w;
    w.show();
    a.connect( &a, SIGNAL( lastWindowClosed() ), &a, SLOT( quit() ) );
    return a.exec();
}

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just call mystart() in your constructor (or show()); and call close() (e.g. in myiter()) when you are done

Hi caduel !

Thats what i thought...

It worked perfect.

Many thanks,

Fassage

Sorry forgot to post new working code for future beginners like myself !

Code:

---

****************************************************************************/
 
#ifndef FORM1_H
#define FORM1_H
 
#include <qdialog.h>
#include <qtimer.h>
 
class QProgressBar;
class QPushButton;
 
class Form1 : public QDialog
{
    Q_OBJECT
 
public:
        Form1( QWidget* parent = 0, const char* name = 0, bool modal = FALSE, WFlags fl = 0 );
        ~Form1();
 
        QProgressBar* pb;
        QTimer timer;
 
protected slots:
        void myiter();
};
 
#endif // FORM1_H
 
****************************************************************************/
 
#include "form1.h"
#include <qprogressbar.h>
#include <qtimer.h>
 
Form1::Form1( QWidget* parent, const char* name, bool modal, WFlags fl ) : QDialog( parent, name, modal, fl )
{
        pb = new QProgressBar( this );
        pb->setGeometry( QRect( 0, 0, 500, 30 ) );
        pb->setTotalSteps( 10 );
        pb->reset();
 
        connect( &timer, SIGNAL( timeout() ), this, SLOT( myiter() ) );
 
        if ( !timer.isActive() ) { timer.start(400); } else { timer.stop(); }
}
 
Form1::~Form1() {};
void Form1::myiter() {
        int i = pb->progress();
        pb->setProgress( ++i );
        if ( i == pb->totalSteps() )  { close(); }
}
 
****************************************************************************/
#include <qapplication.h>
#include "form1.h"
 
int main( int argc, char ** argv )
{
    QApplication a( argc, argv );
    Form1 w;
    w.show();
    a.connect( &a, SIGNAL( lastWindowClosed() ), &a, SLOT( quit() ) );
    return a.exec();
}

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