Re-layout-ing in a subclass

[Daniel T]

Hi my friends.
I have a question. I have a class, named Base which is a QDialog, and this have a very heavy population of widgets and established connection. It is possible to create a subclass of Base, called "Derived", which use all this created widgets of Base, and only make global changes of structure of layout of Base, and also add some other widgets ?
In other words, it is possible, to use Base created widgets, and simply re-layout it ? I read about that we cannot set 2 times "setLayout" if we not delete previously layout, So if i delete a layout, it will also delete his containing widgets ?
Greatings and thanks for any help.
Daniel

[mrjj]

Hi
Yes you can re-layout but layout owns the widget so you must take them out before you remove layout
something like.

void RemoveLayout (QWidget* widget)
{
    QLayout* layout = widget->layout ();
    if (layout != 0)
    {
    QLayoutItem *item;
    while ((item = layout->takeAt(0)) != 0)
        layout->removeItem (item);
    // keep or add to other layout
    delete layout;
    }
}

[Daniel T]

Thanks.
It is exactly what i need to know.
Daniel