Classes are named using their generic name in help file. "MC" prefix is omitted (so if you see Queue class name, it's MCQueue in source code). Classes in Borland development tools have T* prefix, so MCQueue in Delphi/C++Builder/FreePascal code will become TMCQueue.
For declarations that don't have classes (DLL and SO declarations) the name of the class is the first part of the function name. Function declarations are defined so that they accept first parameter, which is in fact a pointer to the class instance.