Delete content widget in layout

[Hogwarts]

Hi
I'm trying to delete a widget or several widgets content in a QBoxLayout. How can I do this?

This is my code:

void CustomRadioButton::deleteOption(int pos)
{
    if(pos >= 0 && pos < getLayout()->count())
    {
        delete getLayout()->takeAt(pos);
        update();
    }
}

void CustomRadioButton::deleteOption(int pos)
{
    if(pos >= 0 && pos < getLayout()->count())
    {
        delete getLayout()->takeAt(pos);
        update();
    }
}

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I think I managed to delete the widget, but the layout do not updated visually. Any idea??
Thanks in advanced and excuse my English.

[Everall]

from the docs :
http://doc.qt.nokia.com/4.7/qboxlayout.html

QBoxLayout Class Reference says :

To remove a widget from a layout, call removeWidget(). Calling QWidget::hide() on a widget also effectively removes the widget from the layout until QWidget::show() is called.

So it's there already.

Have fun.

everall