Further questions on interfacing to Postgres libpq

[Joe]

An example test program that I'm using to learn D to C 
interfacing (specifically calling the libpq library) has a call 
to a C function declared as follows:

     void PQprint(FILE *fout,      /* output stream */
                  const PGresult *res,
                  const PQprintOpt *po);

PQprintOpt is a struct whose first six members are declared as 
'pqbool' which is in turn declared as "typedef char pqbool;" in 
the distributed Postgres header file. I've defined an "alias 
pqbool = char;" in the D file, which is pretty straightforward.

The second of the six members has the name "align", which is a D 
keyword. So I renamed it "align_" and I presume that won't cause 
any problems.

To deal with the first argument to PQprint, I added "import 
core.stdc.stdio : FILE;".  The question is how to pass the D 
"stdout" as that argument.  The D compiler tells me I can't pass 
it as is (as was done in C), because in D it's of type "File".