org.bytedeco.javacpp

Class FunctionPointer

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.javacpp.FunctionPointer

public abstract class FunctionPointer
extends Pointer

All peer classes to function pointers must derive from FunctionPointer. Defining a subclass lets Generator create a native function type. A C++ function object gets instantiated for each call to allocate() as well. That function object can be accessed by annotating any method parameter with ByVal or ByRef. By default, an actual function pointer gets passed ByPtr.

To use FunctionPointer, subclass and add a native method named call() or apply(), along with its return type and parameters, as well as the usual native void allocate() method to support explicit allocation, which is typically a requirement for callback functions.

Author:

Samuel Audet

See Also:

Generator

Nested Class Summary

Nested classes/interfaces inherited from class org.bytedeco.javacpp.Pointer

Pointer.CustomDeallocator, Pointer.Deallocator, Pointer.NativeDeallocator

Field Summary

Fields inherited from class org.bytedeco.javacpp.Pointer

address, capacity, limit, position

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	FunctionPointer()
protected	FunctionPointer(Pointer p)

Method Summary

Methods inherited from class org.bytedeco.javacpp.Pointer

address, asBuffer, asByteBuffer, capacity, capacity, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, hashCode, init, isNull, limit, limit, memchr, memcmp, memcpy, memmove, memset, offsetof, position, position, put, setNull, sizeof, toString, withDeallocator, zero

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

FunctionPointer

protected FunctionPointer()

FunctionPointer

protected FunctionPointer(Pointer p)