Re: Working char ** variables

On Thu, 3 Sep 2020 at 23:17, Ervin Hegedüs <[email protected]> wrote:

> Hi there,
>
> I have a global variable with list of C strings:
>
> char ** custom_variables;
>
> with a method to append a new item to the end:
>
> void add_item_to_array(char *** arr, char * item);
>
> (this is how I call it:
>   add_item_to_array(&custom_variables, "foo")
> )
>
> I can access this variable in Python, and what I set I can see in
> the running code, eg:
>
> mytest.cvar.custom_variables = ["Foo", "bar"]
>
> and I get what I want.
>
>
> I'd like to use that list with .append() method, so I think I
> have two ways - but I don't know the first (use list.append()),
> and the second (use
> mytest.add_item_to_array(mytest.cvar.custom_variable, "foo"))
> drops an error:
>
>
> Traceback (most recent call last):
>   File "./py3test.py", line 52, in <module>
>     mytest.add_item_to_array(mytest.cvar.custom_variables, "FooBar")
>   File "../../mytest.py", line 207, in add_item_to_array
>     return _mytest.add_item_to_array(arr, item)
> TypeError: in method 'add_item_to_array', argument 1 of type 'char ***'
>
>
> Which typemap have to I use and how?
>
>
Hi Ervin

The types for your typemaps need to be char***. It depends on a few things
as to which typemaps you need, but probably just the 'in' typemaps. The
Typemaps documentation chapter has lots of details. I strongly suggest
reading about the debugging options, such as -debug-tmsearch.

William

_______________________________________________
Swig-user mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/swig-user