On 9/15/22, Grant Edwards <grant.b.edwa...@gmail.com> wrote: > > Can that be done using ctypes? > > For example, I open a library that contains functon foo() where foo() > calls external function bar() which is not contained in the library. > Then, I provide a Python bar() function that gets called by foo() when > foo() is called?
That's straight forward if the library allows the application to pass a function pointer to bar(). ctypes function prototypes are defined by ctypes.CFUNCTYPE(restype, *argtypes, use_errno=False, use_last_error=False) for the cdecl calling convention, or similarly by ctypes.WINFUNCTYPE() to use the Windows stdcall calling convention. A prototype can be instantiated as a function pointer that calls a Python function, e.g. c_bar = prototype(bar). -- https://mail.python.org/mailman/listinfo/python-list
