QTextCharFormat cachedFormat(quint64 key) const;
QTextCharFormat cachedFormat(quint32 formatType, quint32 messageLabel = 0) const;
void setCachedFormat(const QTextCharFormat &format, quint32 formatType, quint32 messageLabel = 0);
QTextCharFormat cachedFormat(quint64 key) const;
QTextCharFormat cachedFormat(quint32 formatType, quint32 messageLabel = 0) const;
void setCachedFormat(const QTextCharFormat &format, quint32 formatType, quint32 messageLabel = 0);