Custom QGraphicsView items are not movable

hobbyProgrammer

I made my own QGraphicsView, but the items I've created are not movable.

this is the code:

#include "graphicsview.h"

GraphicsView::GraphicsView(QWidget *parent) : QGraphicsView(parent)
{
    scene = new QGraphicsScene();
    this->setScene(scene);
    this->setAlignment(Qt::AlignLeft | Qt::AlignTop);
    LoadImage();
}

void GraphicsView::mousePressEvent(QMouseEvent *event)
{
    if(event->buttons().testFlag(Qt::LeftButton))
    {
        int x,y;
        x = event->pos().x();
        y = event->pos().y();
        qDebug() << x << ", " << y;
        QPointF point = mapToScene(x, y);
        QGraphicsEllipseItem *ellipse;
        ellipse = scene->addEllipse(point.x(),point.y(),5,5,QPen(Qt::red), QBrush(Qt::red));
        ellipse->setFlag(QGraphicsEllipseItem::ItemIsMovable);
    }
}

mrjj

Hi
I think you just broke GraphicsView normal handling.
Try also calling base class mousePressEvent as it might use for the actual item selection

void GraphicsView::mousePressEvent(QMouseEvent *event)
{
    if(event->buttons().testFlag(Qt::LeftButton))
    {
        int x,y;
        x = event->pos().x();
        y = event->pos().y();
        qDebug() << x << ", " << y;
        QPointF point = mapToScene(x, y);
        QGraphicsEllipseItem *ellipse;
        ellipse = scene->addEllipse(point.x(),point.y(),5,5,QPen(Qt::red), QBrush(Qt::red));
        ellipse->setFlag(QGraphicsEllipseItem::ItemIsMovable);
    }
// call base class
QGraphicsView::mousePressEvent(event);
}