#include <QApplication>
#include <QDialog>
#include <QDialogButtonBox>
#include <QPushButton>
#include <QVBoxLayout>
#include <QLineEdit>

class MyDialog : public QDialog
{
public:
    MyDialog()
    {
        QVBoxLayout* layout = new QVBoxLayout(this);
        layout->addWidget( new QLineEdit( this ) );
        layout->addWidget( new QLineEdit( this ) );

        QDialogButtonBox* box = new QDialogButtonBox( QDialogButtonBox::Ok | QDialogButtonBox::Cancel, Qt::Horizontal, this );
        connect( box, SIGNAL(accepted()), this, SLOT(accept()) );
        connect( box, SIGNAL(rejected()), this, SLOT(reject()) );
        layout->addWidget( box );

        box->button(QDialogButtonBox::Ok)->setAutoDefault( false );
        box->button(QDialogButtonBox::Ok)->setDefault( false );
        box->button(QDialogButtonBox::Cancel)->setAutoDefault( false );
        box->button(QDialogButtonBox::Cancel)->setDefault( false );
    }
};

int main( int argc, char* argv[] )
{
    QApplication app(argc, argv);
    
    MyDialog dlg;
    dlg.show();

    return app.exec();
}