如何用QGraphicsWidget 实现move的功能?
如题,代码如下 m_pScene->clear(); QWidget* widget = new QWidget; widget->resize(w,h); QGraphicsProxyWidget *proxy = m_pScene->addWidget(widget,Qt::BypassGraphicsProxyWidget | Qt::Window); proxy->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable); proxy->setPos(x,y); m_pScene->update(); return ;按理来说应该可以move了,但是鼠标点上去不能move,谁能帮忙解答一下