Qt Tutorial - t7/main.cpp

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# Source code for tutorial 7: main.cpp

    /****************************************************************
    **
    ** Qt tutorial 7
    **
    ****************************************************************/

    #include <qapplication.h>
    #include <qpushbutton.h>
    #include <qlcdnumber.h>
    #include <qfont.h>
    #include <qvbox.h>
    #include <qgrid.h>

    #include "lcdrange.h"

    class MyWidget : public QVBox
    {
    public:
        MyWidget( QWidget *parent=0, const char *name=0 );
    };

    MyWidget::MyWidget( QWidget *parent, const char *name )
            : QVBox( parent, name )
    {
        QPushButton *quit = new QPushButton( "Quit", this, "quit" );
        quit->setFont( QFont( "Times", 18, QFont::Bold ) );

        connect( quit, SIGNAL(clicked()), qApp, SLOT(quit()) );

        QGrid *grid = new QGrid( 4, this );

        LCDRange *previous = 0;
        for( int r = 0 ; r < 4 ; r++ ) {
            for( int c = 0 ; c < 4 ; c++ ) {
                LCDRange* lr = new LCDRange( grid );
                if ( previous )
                    connect( lr, SIGNAL(valueChanged(int)),
                             previous, SLOT(setValue(int)) );
                previous = lr;
            }
        }
    }

    int main( int argc, char **argv )
    {
        QApplication a( argc, argv );

        MyWidget w;
        a.setMainWidget( &w );
        w.show();
        return a.exec();
    }