Qt - change QWidget layout

Question

Let's consider we have a QWidget and a layout named general_layout that contains other widgets and layouts. general_layout is set as the QWidget layout (setLayout(general_layout)).

Now I should to change the content of QWidget. How should I do? I have tried to delete and create a new layout for QWidget and that new layout set as a layout of the QWidget, but could not complet my intentions successfully.

Answer 1

The problem is that the widgets of a layout are not destroyed when deleting a layout. This results in all child widgets of myQWidget still being present, be it without a layout.

The solution is simple: add a

qDeleteAll(myQWidget->children());

after

delete general_layout;