‘class QFontMetrics‘ has no member named ‘horizontalAdvance‘

“error: 'class QFontMetrics' has no member named 'horizontalAdvance' auto width”，简单的翻译一下是QFontMetrics类中没有horizontalAdvance这个成员函数。

该问题是QT 版本不同导致的，我使用的qt版本是5.14.0，在该版本中，QFontMetrics类确实没有horizontalAdvance这个成员函数。

解决方案：

使用QFontMetrics::with方法替代QFontMetrics::horizontalAdvance方法。如下：

//auto width = metrics.horizontalAdvance(site);
auto width = metrics.width (site);

ref：

https://phabricator.kde.org/D22434

https://github.com/czyt1988/saribbon/issues/7

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