Not working custom deginer widget + container based on QWidget!

[qlands]

Hi,

I created a custom Designer widget that I want to use as container.

I indicated that it is a container with:

bool myWidget::isContainer() const
{
    return true;
}

bool myWidget::isContainer() const
{
    return true;
}

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However, even when Designer loads the custom widget and I can it to a ui... The widget is not a container! What else I need to do?

Thanks,
Carlos.