How to delete an already existing layout on a widget?

Question

You must first delete the existing layout manager (returned by layout()) before you can call setLayout() with the new layout.

Answer 1

I want to remove the current layout, replace it with a new layout but keep all widgets managed by the layout. I found that in this case, Chris Wilson's solution does not work well. The layout is not always changed.

This worked for me:

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