My first program with QGraphicsView

[jpn]

I meant that for an ellipse you don't need to implement your own QGraphicsItem, you can simply use a QGrapgicsEllipseItem instead:

#include <QApplication>
#include <QGraphicsView>
#include <QGraphicsScene>
 
int main( int argc, char **argv )
{
	QApplication app(argc, argv);
 
	QGraphicsScene scene(QRectF(0,0,100,100));
	scene.addEllipse(QRectF(25,40,50,20), QPen(Qt::green), QBrush(Qt::red));
	QGraphicsView view(&scene);
	view.show();
 
	return app.exec();
}

#include <QApplication>
#include <QGraphicsView>
#include <QGraphicsScene>

int main( int argc, char **argv )
{
	QApplication app(argc, argv);

	QGraphicsScene scene(QRectF(0,0,100,100));
	scene.addEllipse(QRectF(25,40,50,20), QPen(Qt::green), QBrush(Qt::red));
	QGraphicsView view(&scene);
	view.show();

	return app.exec();
}

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[Morea]

With this constructor

Planet::Planet() //:QGraphicsEllipseItem(QRect(0,0,0,0))
{
	setBrush(QBrush(QColor(45,21,182)));
	setPen(QPen(QColor(200,10,10)));
}

Planet::Planet() //:QGraphicsEllipseItem(QRect(0,0,0,0))
{
	setBrush(QBrush(QColor(45,21,182)));
	setPen(QPen(QColor(200,10,10)));
}

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I get different colors, but it doesn't change the Brush if I add

setBrush(QBrush(QColor(rand()%255,rand()%255,rand()%255)));

setBrush(QBrush(QColor(rand()%255,rand()%255,rand()%255)));

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to the

void Planet::paint(QPainter* painter, QStyleOptionGraphicsItem* option,QWidget* widget)

void Planet::paint(QPainter* painter, QStyleOptionGraphicsItem* option,QWidget* widget)

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function.
Strange.