# Package com.sun.jna

Provides simplified native library access.

See: Description

- Interface Summary
  Interface | Description
  --- | ---
  AltCallingConvention | Tagging interface to indicate the library or callback uses an alternate calling convention.
  Callback | All callback definitions must derive from this interface.
  Callback.UncaughtExceptionHandler |
  CallbackProxy | Placeholder proxy interface to allow an InvocationHandler to convert arguments/return values on callback methods.
  FromNativeConverter | Define conversion from a native type to the appropriate Java type.
  Function.PostCallRead | Any argument which implements this interface will have the `Function.PostCallRead.read()` method called immediately after function invocation.
  FunctionMapper | Provides mapping of Java method names to native function names.
  InvocationMapper | Provide a method for overriding how a given function is invoked.
  Library | Derive from this interface for all native library definitions.
  Native.ffi_callback |
  NativeMapped | Provide conversion for a Java type to and from a native type.
  Structure.ByReference | Tagging interface to indicate the address of an instance of the Structure type is to be used within a `Structure` definition rather than nesting the full Structure contents.
  Structure.ByValue | Tagging interface to indicate the value of an instance of the `Structure` type is to be used in function invocations rather than its address.
  ToNativeConverter | Define conversion from a Java type to its corresponding native type.
  TypeConverter | Convenience interface for bidirectional conversion.
  TypeMapper | Provides converters for conversion to and from native types.
  Version |

- Class Summary
  Class | Description
  --- | ---
  CallbackParameterContext | Provide argument conversion context for a callback invocation.
  CallbackReference | Provides a reference to an association between a native callback closure and a Java `Callback` closure.
  CallbackReference.AttachOptions |
  CallbackResultContext | Conversion context from a Java `Callback` result to a native value.
  CallbackThreadInitializer |
  DefaultTypeMapper | Provide custom mappings to and from native types.
  ELFAnalyser | Analyse an ELF file for platform specific attributes.
  FromNativeContext | Provides context for converting a native value into a Java type.
  Function | An abstraction for a native function pointer.
  FunctionParameterContext |
  FunctionResultContext | Provide result conversion context for a function call.
  IntegerType | Represents a native integer value, which may have a platform-specific size (e.g.
  Library.Handler |
  Memory | A `Pointer` to memory obtained from the native heap via a call to `malloc`.
  MethodParameterContext |
  MethodResultContext | Provide result conversion context for a function call that is called via a Library interface.
  Native | Provides generation of invocation plumbing for a defined native library interface.
  NativeLibrary | Provides management of native library resources.
  NativeLong | Represents the `long` C data type, which may be 32 or 64 bits on *nix-based systems.
  NativeMappedConverter | Provides type conversion for instances of `NativeMapped`.
  NativeString | Provides a temporary allocation of an immutable C string (`const char*` or `const wchar_t*`) for use when converting a Java String into a native memory function argument.
  Platform | Provide simplified platform information.
  Pointer | An abstraction for a native pointer data type.
  PointerType | Type representing a type-safe native pointer.
  StringArray | Handle native array of `char*` or `wchar_t*` type by managing allocation/disposal of native strings within an array of pointers.
  Structure | Represents a native structure with a Java peer class.
  Structure.FFIType | This class auto-generates an ffi_type structure appropriate for a given structure for use by libffi.
  Structure.FFIType.size_t |
  Structure.StructField |
  Structure.StructureSet | Avoid using a hash-based implementation since the hash code for a Structure is not immutable.
  StructureReadContext | Provide native to Java type conversion context for a `Structure` field read.
  StructureWriteContext | Provide Java to native type conversion context for a `Structure` field write.
  ToNativeContext | Context for converting a Java value to a native one.
  Union | Represents a native union.
  VarArgsChecker | Class for checking if a method has vararg parameters.
  WeakMemoryHolder | Helper to hold a memory object based on the lifetime of another object.
  WString | Simple wrapper class to identify a wide string argument or return type.

- Exception Summary
  Exception | Description
  --- | ---
  LastErrorException | Exception representing a non-zero error code returned in either `errno` or `GetLastError()`.

## Package com.sun.jna Description

Provides simplified native library access. See the overview for usage details.

Copyright © 2007-2016 Timothy Wall. All Rights Reserved.