Re: [Swig-user] How to use SWIG Generated C structures in Java as input to C functions via SWIG/JNI

[William S F. <ws...@fu...>]

On 22/11/11 23:44, colin gray wrote:
> Hello
>
> I hava a SWIG interface file that exposes some C functions (via JNI) to
> my Java application and these C structures are used as input into the C
> function (via SWIG/JNI).  SWIG generates the structure as a Java class,
> but I'm unsure how to set the structures properties as the setters take
> a SWIG generated type.  I need to set the structures properties before
> passing it as input into the C function from my Java class.
>   example_location_id_t_ is the class I need to pass, but the setters
> for **Id** and **Phy_idx** take the below SWIG types. How do I populate
> the SWIGTYPE_p_unsigned_char and SWIGTYPE_p_uint32_t so that I can set
> the Id and Phy_idx propertys of the SWIGTYPE_p_uint32_t class?
>
> setId(SWIGTYPE_p_unsigned_char value) and setPhy_idx(SWIGTYPE_p_uint32_t
> value)
>
The type wrapper classes are a kind of warning that you need to improve 
the wrappers. Perhaps you need to apply the const ref typemaps, hard to 
tell without seeing your C++ source. If the types are pointers you have 
numerous choices as to how to handle them, but that depends on what the 
C++ interface requires, which cannot be automatically deduced by SWIG 
when parsing the headers.

William