questions about GNUstep

[Mark Frank]

GNUstep:
I have some questions about GNUstep, that I was hoping you could
answer.  I am running GNUstep on Windows, and am reasonably
successful.  I have some applications that I developed under NextStep,
and am trying to port them to GNUstep.  These are mostly scientific
applications, for which I wrote some simple x-y plotting routines.  My
questions,
* After looking at your on-line documentation, I am uncertain whether
display post script is supported.  I have some code inside a view such
as,
      for(i=0; i<NUMBER_LINES; i++)
      {
       ...;
        userPathOps[op_ctr++]   = dps_lineto;       
       }
      if(i == NUMBER_LINES)
          start--;
      PSDoUserPath(userPathPts, point_ctr, dps_float, userPathOps,
op_ctr, bbox, dps_ustroke);
Does GNUstep support this type of code, and if not, what should I use instead.
* I have also have an interest in interfacing Objective-C code to
C/C++.  Is there any documentation on how to do this.
* I was also somewhat confused about the support for frameworks. 
Currently, I am using frameworks under OpenStep on Windows, but your
documentation seems to indicate that this is not the preferred method.
 What should I use instead?
Thanks for any pointers you can give me,
Mark
mark.frank@ieee.org