Loading the Prolog code

Prolog code (source or QOF) can be loaded by submitting normal Prolog load predicates as queries. Note that Quintus uses slashes / in file names where Windows uses backslash \. Example:

     PrologQueryCutFail("load_files('d:/xxx/myfile')")
     

To facilitate the location of Prolog files, two file search paths are predefined:

app

identifies the directory path of the Visual Basic project or the applications executable.

That is, you can load the file myfile located in the same directory as the project/executable, issuing the query:

          PrologQueryCutFail("load_files(app(myfile))")
          

vbqp

identifies the directory path of the vbqp.dll file.

That is, you can use the following query to load the file myfile if it is located in the same directory as vbqp.dll:

          PrologQueryCutFail("load_files(vbqp(myfile))")