QPaintEvent syntax question

[jpn]

The result of

void Class::paintEvent(QPaintEvent* /* event */)
{
    ...
}

void Class::paintEvent(QPaintEvent* /* event */)
{
    ...
}

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and

void Class::paintEvent(QPaintEvent* event)
{
    Q_UNUSED(event);
}

void Class::paintEvent(QPaintEvent* event)
{
    Q_UNUSED(event);
}

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is the same; the compiler won't complain about an unused parameter. Although the latter is more readable, isn't it?