Can I use generated code in a user-defined MFC application?

I am trying to make a MFC application with Microsoft Visual Studio 2010 with the goal of running code generated by simulink coder from a windows (FormView) form.

I have included all necessary files in the project, I have renamed the 'main' function in rt_main.c, I have inserted #include rt_main.c in the formview header file, and I have created a routine that calls rt_OneStep() regulary based on a user-defined execution rate. Methods that take care of the initialization and the output of the model are also in place.

However, I get two errors pointing to windns.h, a file that is included in the 'external dependencies' of the microsoft visual studio solution, when making a MFC application. I have made working MFC applications where this same file is included, so I know it has to be caused by some kind of interaction with the matlab/simulink include-files or with the generated code.

The errors both read "error C2059: Syntax Error : 'constant' " and point to the following section of code in windns.h:

       DNS_MX_DATAW        MX, Mx,
                           AFSDB, Afsdb,
                           RT, Rt; //error points here
       DNS_TXT_DATAW       HINFO, Hinfo,
                           ISDN, Isdn,
                           TXT, Txt,
                           X25;

This section of code appears twice in the file, hence the two errors. I know someone who has used a similar method to implement simulink generated code into a Microsoft Visual Studio solution (also a MFC application), but with an older version of Visual Studio. His program works fine, but when I load his solution into Visual Studio 2010 I get the same errors. Does anyone know what causes this, and how to get around it?

*EDIT: I have discovered that one of the lines in the preprocessor definitions I have added to the project from the defines.txt file generated by simulink coder reads 'RT'. I assume this must be causing the error. What is the function of this line? Can I remove or adjust it to avoid the error? I will try some things but I feel it's dangerous to modify things without fully grasping the consequences. A quick response would be much appreciated, thanks in advance.