Ok, QRadioButton's status should be checked when Next button is clicked
and I was checking the status when the QWizardPage was added to the QWizard.

now , how can we override the QWizard's next button to check the
QRadio button status of each page ? and if we can not over ride the
Next button , then we should be able to connect each next button
to a QWizardpage and it's QRadioButton's field , and I came up
with some thing like:

wizard.button(QWizard::NextButton)->connect(wizard.button(QWizard::NextButton), SIGNAL(clicked()), wizard.currentPage()->field(QRadioButton) ,SLOT(wizard.currentPage()->?));

but still don't know if I can use QRadioButton in field ,and what should I use beside of ? mark.

Thanks for help.