Qt中右键菜单的生成方式:contextMenuEvent

实现protected contextMenuEvent函数

void MyItem::contextMenuEvent(QContextMenuEvent event)
{
QMenu menu;
QAction moveAction = menu.addAction("move back");
QAction actAction = menu.addAction("test");
QAction selectedAction = menu.exec(QCursor::pos());
if(selectedAction == moveAction) {
setPos(0, 0);
}
}