我如何在QToolButton中使用“ setToolButtonStyle”

Question

我试图在QToolButton上使用方法setToolButtonStyle隐藏文本并仅显示图标，它告诉我：错误：'QToolButton'中没有名为'setToolButtonStyle'的成员

void mainmenu_view::initButton(QToolButton* button,QSize size){

    std::stringstream ss;
    ss<<":/draw/"<<button->text().toStdString()<<".PNG";

    button->setFixedSize(size.width(),size.height());
    button->setIcon(QIcon(QString::fromStdString(ss.str())));
    button->setIconSize(size);

    **button->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);**
}