How to use a png image as a QGraphicItem?

[frnklu20]

How can I do this?I don't want to use an allipse or a circle or a rect

[mrjj]

Hi
what about
https://doc.qt.io/qt-5/qgraphicspixmapitem.html
that would load png.

[frnklu20]

Oh yeah! But it gives me an error

QGraphicsPixmapItem *item = new QGraphicsPixmapItem(QPixmap("C:/Users/ILHA4/Desktop/trafo"), &scene);

It says:
"no matching constructor for initialization of 'QGraphicsPixmapItem'"

UPDATE:

dialog.h

#include <QGraphicsPixmapItem>

namespace Ui {
class Dialog;
}

class Dialog : public QDialog
{
...
        QGraphicsPixmapItem *item;
};

dialog.cpp

#include <QGraphicsPixmapItem>

Dialog::Dialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::Dialog)
{
    ui->setupUi(this);

    scene= new QGraphicsScene(this);
    ui->graphicsView->setScene(scene);
    QBrush redBrush(Qt::red);
    QPen blackpen(Qt::black);
    
    item->setPixmap(QPixmap("C:/Users/ILHA4/Desktop/trafo"));
    scene->addItem(item);
    ellipse=scene->addEllipse(10,10,100,100,blackpen,redBrush);
    ellipse->setFlag(QGraphicsItem::ItemIsMovable);
}

When i do this the program unexpectedly finishes :(

UPDATE 2:

dialog.cpp

Dialog::Dialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::Dialog)
{...

      QGraphicsPixmapItem *item=scene->addPixmap(QPixmap("C:/Users/ILHA4/Desktop/trafo"));
    item->setPos(50,50);
    scene->addItem(item);
}

It doesn't give me an error, but the item doesn't appear on the screen :(

[SGaist]

Hi,

@frnklu20 said in How to use a png image as a QGraphicItem?:

"C:/Users/ILHA4/Desktop/trafo"

That's pretty unusual for an image name. The extension is missing. Is that on purpose ?

[frnklu20]

thats the path of the image, where it is located on my computer

the name of the image is trafo, of high voltage transformer.

[SGaist]

What type of image is that ? Again, it's really unusual for an image file to not have an extension.

[frnklu20]

it's a png image, but if i do:

GraphicsPixmapItem *item=scene->addPixmap(QPixmap("C:/Users/ILHA4/Desktop/trafo.png"));

it doesn't work either, the image doesn't appear on the screen

[SGaist]

It that case, check whether the QPixmap is null.

[frnklu20]

Yes that's it, the path was wrong

Thanks man, you're awesome!