Visual studio c++ documentation generator

You could use the XML-Documentation format, supported by VS2010, too. http://msdn.microsoft.com/en-us/library/ms177226%28VS.80%29.aspx

After commenting your code, you can use Sandcastle to create a MSDN-like documentation: http://sandcastle.codeplex.com/. (Here is a GUI representation for Sandcastle, which is a lot easier to use: https://github.com/EWSoftware/SHFB)

I use AtomineerUtils to create the XML-Documentation headers automatically. This tool will help you a lot. You can have free base version here: http://www.atomineerutils.com/products.php

You can have a look at Doxygen.

You could use my addin, Atomineer Pro Documentation to quickly generate documentation comments in Documentation-XML, Doxygen, Qt or JavaDoc format. Then use Sandcastle (DocXml) or Doxygen (DocXml, Doxygen, Qt, Javadoc) to convert this documentation into external documentation files.

I'd recommend uing DocXml format because all the above tools work with it, and Visual Studio recognises it (it syntax colours it, and it builds the docs into its intellisense database so it appears in tool-tip help as you type class/method names into your code).