QMenu setStyleSheet样式设置

要实现如图所示的菜单按钮，有默认，悬停，点击三种状态；发现用Qss统一设置样式的时候，按下状态无效；

QMenu::item
{
background: rgb(77, 77, 77);
font-family: Microsoft YaHei UI;
font-size: 14px;
height:32px;
color: rgba(255, 255, 255, 0.7);
}
QMenu::item:pressed//无效
{ 
    background-color: rgb(32,128,247);
    color:#FFFFFF 
}
QMenu::item:selected//实际上是hover状态
{
color: rgba(255, 255, 255, 1);
background: rgb(59,59,60);

}

为了解决这个问题需要在代码里设置样式才有用

void LibItem::SlotOpenCtrl()
{
    QMenu menu(this);
    QIcon iconEdit = QIcon(":/analysisCenter/Resources/analysisCenter/editNameNor.svg");
    QIcon iconDelete = QIcon(":/preview/Resources/previewanalyze/delete.svg");
    QAction *editAction= menu.addAction(iconEdit,"     编辑");
    QAction *deleteAction= menu.addAction(iconDelete,"     删除");
    //用Qss文件设置无效，但是用代码直接设置有效
    menu.setStyleSheet("QMenu::item:pressed { background-color: rgb(32,128,247);color:#FFFFFF }");
    connect(editAction, &QAction::triggered, this, [=]() {emit signalProcessLib("edit", m_info); });
    connect(deleteAction, &QAction::triggered, this, [=]() {emit signalProcessLib("delete", m_info); });
    menu.exec(QCursor::pos());
}