This is a simple example of using SWIG. It covers two topics:
- Wrapping C++ class "sample" in Python.
- Calling Python script with wrapped class from C++.
For more information about project setting, look here.
Class sample (/sample/sample.h) contains three functions that we want call from Python script:
-
print_infoA(A *a) -
print_infoVoid(void *a) -
print_info(int i)
First function takes pointer to class A (/A/A.h).
For first two we have to put these lines in sample.i:
%typemap(in) void* { $1 = (void *)PyCapsule_GetPointer($input, "testVoid.pointer"); }
%typemap(in) A* { $1 = (A *)PyCapsule_GetPointer($input, "testA.pointer"); }
After that we can call function that takes void* or A* parameters.
Test Python script placed in /sample/test.py.
/startpy/startpy.cpp contains function pythonFunc that calls test.py.