win_add_dll_directory(+AbsDir,
-Cookie)This predicate adds a directory to the search path for dependent DLL
files. If the call is successful it unifies Cookie with a
handle that must be passed to win_remove_dll_directory/1
to remove the directory from the search path. Error conditions:
- This predicate fails if Windows does not yet support the
underlying primitives. These are available in recently patched Windows 7
systems and later.
- This predicate throws an exception if the provided path is invalid
or the underlying Windows API returns an error.
If open_shared_object/2
is passed an absolute path to a DLL on a Windows installation
that supports AddDllDirectory() and friends,150Windows 7
with up-to-date patches or Windows 8. SWI-Prolog uses LoadLibraryEx()
with the flags
LOAD_LIBRARY_SEARCH_DLL_LOAD_DIR and
LOAD_LIBRARY_SEARCH_DEFAULT_DIRS. In this scenario,
directories from %PATH% are not searched.
Additional directories can be added using win_add_dll_directory/2.