Re: [Swig-user] JAVA-callback from naitive C (using SWIG)?

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

Witek Piet wrote:
> Hi,
> 
> I am rather new to SWIG as I only just have succeeded in calling my
> first native C code from JAVA. I have a DLL written in native C. I would
> like to register some JAVA-callbacks methods, so that the native C code
> can call these JAVA methods. Is this supported by SWIG?
> 
> I have been reading about the "Cross language polymorphism using
> directors" in the SWIG manual, but I am not sure if I can use this
> technique for my purpose (JAVA-callback from native C) or if it is only
> valid for native C++. Any advice would be highly appreciated.

As there is no support for making callbacks from C++ to Java other than
by using C++ directors, I suggest you write either:

1) Write your own hand coded JNI wrappers for callbacks.
2) Write a C callback function that calls directly into a C++ virtual
method. You can then use directors to redirect this C++ virtual method
call into a Java director method.

William