How to select multiple items without pressing Ctrl key within QGraphicsScene?

Question

In Qt\'s QGraphicsScene, if I wanna one item, just click it, and click another selectable item will make the selected item to be unselected. If I want to select mul

Answer 1

maybe it's a hack but it's works for me. In this example you can select multiple items using shift key

void MySceneView::mousePressEvent(QMouseEvent *event)
{
    if (event->modifiers() & Qt::ShiftModifier ) //any other condition
        event->setModifiers(Qt::ControlModifier);

    QGraphicsView::mousePressEvent(event);
}


void MySceneView::mouseReleaseEvent(QMouseEvent *event)
{
    if (event->modifiers() & Qt::ShiftModifier ) //any other condition
        event->setModifiers(Qt::ControlModifier);

    QGraphicsView::mouseReleaseEvent(event);
}