drawing a grid

[dreamer]

how can i draw a grid of points on a widget of type QgraphicsView?

I reimplement the PaintEvent method in my custom QgraphicsView class, but i can't see the points i draw......

A simple line drawing i have implemented:

void myview::paintEvent(QPaintEvent* event){
qreal x,y,w,h;
myscene->sceneRect().getRect(&x,&y,&w,&h);
 
QPainter painter(this);
painter.setPen(Qt::black);
painter.drawLine(x,y,w/2,h/2);
 
QGraphicsView::paintEvent(event);
}

void myview::paintEvent(QPaintEvent* event){
qreal x,y,w,h;
myscene->sceneRect().getRect(&x,&y,&w,&h);

QPainter painter(this);
painter.setPen(Qt::black);
painter.drawLine(x,y,w/2,h/2);

QGraphicsView::paintEvent(event);
}

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