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QFontMetrics::boundingRect() returns wrong text width

  • I want to get a text width. I need to know this width before rendering of the text.
    So I do:
    @QFontMetrics m(font);
    QRectF b1 = m.boundingRect(QRect(0, 0, 0, 0), Qt::AlignCenter, text);@

    After that when I render this text I do:

    QRectF b2 = painter->boundingRect(QRect(0, 0, 0, 0), Qt::AlignCenter, text);@

    font and text are the same. But I get different width. Why and how can I get the same one?

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