【转载】关于graphicsview背景透明的问题

#include <QtGui>

int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QMainWindow window;

QGraphicsScene* scene = new QGraphicsScene(&window);
QGraphicsItem* item = scene->addText("QGraphicsTextItem");
item->setFlags(QGraphicsItem::ItemIsMovable);

QGraphicsView* view = new QGraphicsView(&window);
view->setStyleSheet("background: transparent");  //就是这句可以设置透明
view->setScene(scene);
window.setAttribute(Qt::WA_TranslucentBackground);
window.setWindowFlags( Qt::FramelessWindowHint) ;
window.setCentralWidget(view);
window.setStyleSheet("background: green");
window.show();
return app.exec();
}