void test::showEvent ( QShowEvent *pEvent)
{
    QList<QWidget*> listChild = findChildren<QWidget*>();
    foreach( QWidget *pWnd, listChild)
    {
        QString sz = pWnd->objectName();
        const QRect &rect = pWnd->geometry();
        int n = 0;
    }

    QWidget::showEvent( pEvent);
}