You need at least two ///s for the detailed message, even if it is only a one liner. Also, the space is required between the brief and detailed messages. I like this syntax since it looks like normal C/C++ commenting and doesn't have a lot of doxy jargon, e.g., \brief, etc.
I typically doxy comment like follows:
/// Brief message
/// Detailed message. ///
You need at least two ///s for the detailed message, even if it is only a one liner. Also, the space is required between the brief and detailed messages. I like this syntax since it looks like normal C/C++ commenting and doesn't have a lot of doxy jargon, e.g., \brief, etc.