C++ (Cpp) QDialog::rect示例

bool ButtonDelegate::editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index)
{
    if (event->type() == QEvent::MouseButtonPress) {

        QMouseEvent* e =(QMouseEvent*)event;

        if (option.rect.adjusted(4, 4, -4, -4).contains(e->x(), e->y()) && m_btns.contains(index)) {
            m_btns.value(index)->state |= QStyle::State_Sunken;
        }
    }
    if (event->type() == QEvent::MouseButtonRelease) {
        QMouseEvent* e =(QMouseEvent*)event;

        if (option.rect.adjusted(4, 4, -4, -4).contains(e->x(), e->y()) && m_btns.contains(index)) {
            m_btns.value(index)->state &= (~QStyle::State_Sunken);

            QDialog *d = new QDialog();

            d->setGeometry(0, 0, 200, 200);
            d->move(QApplication::desktop()->screenGeometry().center() - d->rect().center());
            d->show();
        }
    }
}