1. 添加模块

在cmakeList.txt 中添加svg模块

2. 使用示例

这里已给已初始化的按钮设置图标为例：

	int width = 12;
    int height = 12;
    QSvgRenderer *minRenderer = new QSvgRenderer(QString(":/resources/icon/min_window.svg"));
    QPixmap pixmap(width, height);
    pixmap.fill(Qt::transparent);
    QPainter painter(&pixmap);
    minRenderer->render(&painter);
    QIcon icon(pixmap);
    minButton->setIcon(icon);
    minButton->setIconSize(pixmap.size());

效果：