Simplest way to get mouse events on Qt3DWindow

Saitodepaula

I want to get mouse events (like mouse position) on a Qt3D Window, every time I click inside the window.

I've seen this topic

https://forum.qt.io/topic/75730/mouse-controls-over-qt-3d-window/2

but my Qt3DWindow is not inside any widget, so I don't think I need an EventFilter.

I'm just beggining to learn C++ and Qt, so I'm trying to make the simplest program possible. In the code below (all my program is in this code), I would like to get the mouse position every time I click inside the Qt3D Window, but I can't even get a debug message every time I click.

As far as I understand, the mouseMoveEvent function is only called one time, when the program gets executed. How would I call this function in the main loop, if there is such a thing in Qt?

Do I need to do something like Qt3DInput::QMouseDevice *mouse = new Qt3DInput::QMouseDevice(scene);? But how would I use it?

#include <QGuiApplication>

#include <Qt3DCore/QEntity>
#include <Qt3DRender/QCamera>
#include <Qt3DRender/QCameraLens>
#include <Qt3DCore/QTransform>
#include <Qt3DCore/QAspectEngine>

#include <Qt3DInput/QInputAspect>

#include <Qt3DRender/QRenderAspect>
#include <Qt3DExtras/QForwardRenderer>
#include <Qt3DExtras/QPhongMaterial>
#include <Qt3DExtras/QGoochMaterial>
#include <Qt3DExtras/QSphereMesh>
#include <Qt3DExtras/QCuboidMesh>

#include <QMouseEvent>
#include <Qt3DInput/QMouseDevice>
#include <Qt3DInput/QMouseHandler>
#include <Qt3DInput/QMouseEvent>

#include <QDebug>

#include "qt3dwindow.h"

void mouseMoveEvent(Qt3DInput::QMouseEvent *event);

Qt3DCore::QEntity *createScene()
{
    // Root entity
    Qt3DCore::QEntity *rootEntity = new Qt3DCore::QEntity;

    // Material
    //Qt3DRender::QMaterial *material = new Qt3DExtras::QPhongMaterial(rootEntity);
    Qt3DRender::QMaterial *material = new Qt3DExtras::QGoochMaterial(rootEntity);

    //Cube
    Qt3DCore::QEntity *cubeEntity = new Qt3DCore::QEntity(rootEntity);
    Qt3DExtras::QCuboidMesh *cubeMesh = new Qt3DExtras::QCuboidMesh;

    cubeEntity->addComponent(cubeMesh);
    cubeEntity->addComponent(material);

    return rootEntity;
}

int main(int argc, char* argv[])
{
    QGuiApplication app(argc, argv);
    Qt3DExtras::Qt3DWindow view;

    Qt3DCore::QEntity *scene = createScene();

    // Camera
    Qt3DRender::QCamera *camera = view.camera();
    camera->lens()->setPerspectiveProjection(45.0f, 16.0f/9.0f, 0.1f, 1000.0f);
    camera->setPosition(QVector3D(5.0, 5.0, 5.0f));
    camera->setViewCenter(QVector3D(0, 0, 0));

    Qt3DInput::QMouseEvent *e;

    mouseMoveEvent(e);

    view.setRootEntity(scene);
    view.show();

    return app.exec();
}

void mouseMoveEvent(Qt3DInput::QMouseEvent *event)
{
    if (event->button() == Qt::LeftButton)
    {
        qDebug() << "ok";
    }
}