菜鸟问题：如何在graphicsView中绘制网格？？ [复制链接]

求助如题，请各位大侠们帮个忙。。。。

重载drawbackground函数就行

呵呵，能否指点的再具体点，一个简单的示例也行，谢谢。

    painter->save();
    if (sce->getGridVisible())
    {
        painter->setRenderHint(QPainter::Antialiasing, false);
        painter->setRenderHint(QPainter::TextAntialiasing, true);
        painter->setRenderHint(QPainter::SmoothPixmapTransform, false);

        painter->setPen(QColor(161, 161, 161, 50));
        qreal limite_x = sce->width();
        qreal limite_y = sce->height();

        painter->setBrush(Qt::NoBrush);
        painter->drawRect(0, 0, sce->width(), sce->height());
        int grid_size = sce->getGridSize();
        for (int gx = 0 ; gx < limite_x ; gx += grid_size)
        {
            painter->drawLine(QPointF(gx, 0), QPointF(gx, limite_y));
        }
        for (int gy = 0 ; gy < limite_y ; gy += grid_size)
        {
            painter->drawLine(QPointF(0, gy), QPointF(limite_x, gy));
        }
    }

    painter->restore();