[ REQ 5894]: Question about Geomview + Xforms (Forms Library for X)

[iescobar at dcc.uchile.cl]

Hello,   

    I'm working with X-geomview, C++ (g++ compiler) and 
Xforms. In the second extern module of the Geomview Manual appears:

1. an OpenGL function called "foreground()"
   and

Question: How can I replace that function in Xforms? (Xforms is based
on Xlib) It's that function necessary for Xform?

2. The next code into the main:  


for (t=0; ; t+=dt) {
    fdmask = (1 << fileno(stdin)) | (1 << qgetfd());
    select(qgetfd()+1, &fdmask, NULL, NULL, &timeout);
    fl_check_forms();
    UpdateMesh(xmin, xmax, ymin, ymax, xdim, ydim, t);
  }

Question: How can I replace or fix the next two lines?:
    fdmask = (1 << fileno(stdin)) | (1 << qgetfd());
    select(qgetfd()+1, &fdmask, NULL, NULL, &timeout);

    I don't find the function qgetfd... Is there an equivalent for X?

For that example, I comment all of the above and it works... but
when I use other interface (made with Xforms too), geomview blocks if
I use its menues......
(That happen in a SunOs environment.... but not in Linux..!!! )

I speak english only a little, sorry :)
Any suggestions please send me a mail

Thanks in advance!!!