///////////FILE qt.h
#include <qapplication.h>
#include <qwidget.h>
#include <qprocess.h>
#include <qpushbutton.h>

class myWidget:public QWidget
{
    Q_OBJECT
    public:
        QPushButton *button;
        myWidget( QWidget *parent = 0, const char *name = 0);
        ~myWidget( );

    public slots:
        void buttonClicked( );
};
/////////////////FILE qt.cpp#include <qapplication.h>
#include <qwidget.h>
#include <qprocess.h>
#include <qpushbutton.h>
#include "qt.h"

myWidget::myWidget( QWidget *parent , const char *name )
            :QWidget( parent, name )
        {
            button = new QPushButton(  "CLICK", this, "HI" );
            connect( button, SIGNAL( clicked( ) ), this, SLOT(buttonClicked()) );
        }
myWidget::~myWidget( )
        {
        }

        void myWidget::buttonClicked( )
        {
            QProcess *proc = new QProcess( this );
            proc->addArgument( "firefox" );
            proc->addArgument( "http://www.google.com" );
            proc->start( );
        }
/////////////////////////FILE main.cpp
#include <qapplication.h>
#include "qt.h"

int main( int argc, char **argv )
{
    QApplication q(argc, argv);
    myWidget *wid = new myWidget( );
    wid->show( );
    q.setMainWidget( wid );
    q.exec( );
}
//////////////////////////////FILE test.pro
######################################################################
# Automatically generated by qmake (1.07a) Thu Nov 24 10:25:43 2005
######################################################################

TEMPLATE = app
INCLUDEPATH += .

# Input
HEADERS += qt.h
SOURCES += main.cpp qt.cpp