MFC and JNI
in [MFC]
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From: Joseph M. Newcomer on 7 Apr 2010 16:04 C and C++ POD (Plain Old Data) types are interchangeable. Essentially, if you want to use something more complex, like std::vector, you would have to write a pice of code (most likely C code, or using the C subsect of C++) that marshaled the Java data into the C++ representation. Arrays would require marshaling unless you had a class that implemented the Java representation of the array so they were bitwise compatible. Since Java, as far as I know, does not specify how arrays are implemented, the code would not be portable across difference Java implementations (or even, perhaps, different releases of the Sun Java product, since backward compatibility has NEVER been a consideration in their releases) joe On Wed, 7 Apr 2010 00:02:19 -0700 (PDT), divya_rathore <divyarathore(a)gmail.com> wrote: >For curiosity sake.. is there some tutorial around for using JNI with C >++? Can you point it out for me? >An old idea that remains unimplemented has following scenario: > >a given raw data array (could be unsigned char, int, float, double >arrays defined in Java code) would be passed to a C++ dll. The dll >processes/modifies that array and returns back to java app. > >thanks in advance, >- Divya Joseph M. Newcomer [MVP] email: newcomer(a)flounder.com Web: http://www.flounder.com MVP Tips: http://www.flounder.com/mvp_tips.htm |