How can i move the QWidget in QGraphicsView?

[seokwon]

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    ui->graphicsView->setGeometry(0,0,geometry().width(),geometry().height());
    scene = new QGraphicsScene(0, 0, geometry().width(), geometry().height(), this);

    ui->graphicsView->setScene(scene);

    QPushButton *button =new QPushButton(NULL);
    button->setText("move it");
    scene->addWidget(button);
   }

Hello, This is my code.
I want to move the QPushButton or kind of QWidget in QGraphicsView for example QListWidet, QTableWidget etc.
So, How can i move QWidget?

[jsulm]

@seokwon http://doc.qt.io/qt-5/qwidget.html#setGeometry-1

[seokwon]

@jsulm
Thanks. But I want to move like a QGraphicsItem::SetFlag(QGraphicsItem::ItemIsMovable).
Can i not move in the same way as QGraphicsItem?
Can i move using mouse click then move?

[jsulm]

@seokwon See http://doc.qt.io/qt-5/qgraphicsproxywidget.html

[seokwon]

@jsulm
I already try it. but It is not work ..
This is my code.

   ui->graphicsView->setGeometry(0,0,geometry().width(),geometry().height());
    scene = new QGraphicsScene(0, 0, geometry().width(), geometry().height(), this);

    ui->graphicsView->setScene(scene);

    QPushButton *button =new QPushButton(NULL);
    QGraphicsProxyWidget *proxyItem = new QGraphicsProxyWidget;
    proxyItem->setWidget(button);
    proxyItem->setFlag(QGraphicsWidget::ItemIsMovable);
    scene->addItem(proxyItem);

Can you tell me what is wrong?

[jsulm]

@seokwon Take a look at https://stackoverflow.com/questions/26990502/why-qgraphicsitemitemismovable-has-no-effect