QWidget QPixmap 截取控件并保存为图片 基本控件（十二）

一、功能
void QWidget::render(QPaintDevice *target, const QPoint &targetOffset = QPoint(), const QRegion &sourceRegion = QRegion(), QWidget::RenderFlags renderFlags = RenderFlags(DrawWindowBackground | DrawChildren))

Renders the sourceRegion of this widget into the target using renderFlags to determine how to render. Rendering starts at targetOffset in the target.
二、代码

    QPixmap pixmap(this->size());
    render(&pixmap);
    pixmap.save(QCoreApplication::applicationDirPath() + "/1.jpg");

三、效果图