I get the wrong color in paint function.

[joeQ]

//ShowImgScene
void ShowImgScene::AddRect(QRect &rect, QColor color /*= QColor(Qt::red)*/)
{
    QPen pen;
    QGraphicsRectItem * pRectItem = new GraphicsRectItem(rect); // GraphicsRectItem
    pen.setWidth(0);
    pen.setColor(color);
    pRectItem->setPen(pen); // at here i set the pen
}

I wan to get the color in GraphicsRectItem::paint function.

//GraphicsRectItem
void GraphicsRectItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
    QGraphicsRectItem::paint(painter,option,widget);

    QColor color = painter->pen().color(); // but the color always is black
    if( option->state & QStyle::State_Selected ){
        painter->fillRect(option->rect,color);
    }
}

where is i wrong? and, how to get the color of before set in paint function?

About this problem, i can use the setData and data. But, i think there must be a better way.

[matthew.kuiash]

@joeQ I think you should use "this->pen()" to access the colour of the graphics item. You're accessing the last pen set on the painter instead.

Please try this…

QColor color = pen().color();

(I'm working from memory, apologise if I'm wrong!)

[joeQ]

@matthew.kuiash

Excellent, Your memory is good! Thank u very much.