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c++qtqgraphicsview

QGraphicsScene does not have a function to remove QWidget

QGraphicsScene has an addWidget(QWidget *) function, but no corresponding removeWidget(QWidget *). It has only removeItem(QGraphicsItem *).

How do I remove a QWidget?

Solution

  • Here's a basic sample, see if it works for you.

    QGraphicsScene scene;   
QPushButton *button = new QPushButton; 

//Add item and obtain QGraphicsProxyWidget 
QGraphicsProxyWidget *proxy = scene.addWidget(button);

//Remove item
scene.removeItem(proxy);

    Just remember to delete any memory you allocate.

    Edit: After OP's comments, maybe this is what you want

    //add item
QGraphicsProxyWidget *proxy = new QGraphicsProxyWidget;
proxy = scene.addWidget(button);

//remove item
scene.removeItem(button->graphicsProxyWidget());

    Again, remember to delete proxy, or use a smart pointer.