FunctionMapper (JNA API)
Description: declaration: package: com.sun.jna, interface: FunctionMapper

Package com.sun.jna

# Interface FunctionMapper

All Known Implementing Classes:
  `StdCallFunctionMapper`, `W32APIFunctionMapper`

public interface FunctionMapper
Provides mapping of Java method names to native function names. An instance of this interface may be provided to `Native.load(String, Class, java.util.Map)` as an entry in the options map with key `Library.OPTION_FUNCTION_MAPPER`.

There are several circumstances where this option might prove useful.

- C preprocessor macros are used to allow C code to refer to a library function by a different name
- Generated linker symbols are different than those used in C code. Windows `stdcall` functions, for instance, are exported with a special suffix that describes the stack size of the function arguments (see `StdCallFunctionMapper`).
- The naming of the C library methods conflicts horribly with your Java coding standards, or are otherwise hard to follow. It's generally better to keep the original function names in this case, to avoid confusion about what's actually being called, but the option is available.

See Also:
  - `Library.OPTION_FUNCTION_MAPPER`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `String`
  `getFunctionName(NativeLibrary library, Method method)`

- ## Method Details

  - ### getFunctionName

    String getFunctionName(NativeLibrary library, Method method)