Package org.lwjgl.system

Interface Pointer

All Known Subinterfaces:

CallbackI, CallbackI.B, CallbackI.D, CallbackI.F, CallbackI.I, CallbackI.J, CallbackI.P, CallbackI.S, CallbackI.V, CallbackI.Z, EnumerationMutationHandlerI, SharedLibrary, WindowProcI

All Known Implementing Classes:

Callback, CustomBuffer, DEVMODE, DEVMODE.Buffer, DISPLAY_DEVICE, DISPLAY_DEVICE.Buffer, EnumerationMutationHandler, GLYPHMETRICSFLOAT, GLYPHMETRICSFLOAT.Buffer, LinuxLibrary, MacOSXLibrary, MacOSXLibraryBundle, MacOSXLibraryDL, MONITORINFOEX, MONITORINFOEX.Buffer, MSG, MSG.Buffer, ObjCMethodDescription, ObjCMethodDescription.Buffer, ObjCPropertyAttribute, ObjCPropertyAttribute.Buffer, PIXELFORMATDESCRIPTOR, PIXELFORMATDESCRIPTOR.Buffer, POINT, POINT.Buffer, Pointer.Default, PointerBuffer, POINTFLOAT, POINTFLOAT.Buffer, POINTL, POINTL.Buffer, RECT, RECT.Buffer, SECURITY_ATTRIBUTES, SECURITY_ATTRIBUTES.Buffer, SharedLibrary.Default, SharedLibrary.Delegate, Struct, StructBuffer, TOUCHINPUT, TOUCHINPUT.Buffer, Visual, Visual.Buffer, WINDOWPLACEMENT, WINDOWPLACEMENT.Buffer, WindowProc, WindowsLibrary, WNDCLASSEX, WNDCLASSEX.Buffer, XSetWindowAttributes, XSetWindowAttributes.Buffer, XVisualInfo, XVisualInfo.Buffer

public interface Pointer

Pointer interface.

LWJGL can run on both 32bit and 64bit architectures. Since LWJGL applications deal with native memory directly, this interface provides necessary information about the underlying architecture of the running JVM process.

When interacting with native functions, pointer values are mapped to Java long. LWJGL automatically converts long values to the correct pointer addresses when used in native code. Native functions sometimes require arrays of pointer values; the PointerBuffer class may be used for that purpose. It has an API similar to a LongBuffer but handles pointer casts automatically.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	Pointer.Default Default Pointer implementation.

Field Summary

Fields

Modifier and Type	Field and Description
static int	POINTER_SHIFT The pointer size power-of-two.
static int	POINTER_SIZE The pointer size in bytes.

Method Summary

Modifier and Type	Method and Description
long	address() Returns the raw pointer address as a long value.

Field Detail

POINTER_SIZE

static final int POINTER_SIZE

The pointer size in bytes. Will be 4 on a 32bit JVM and 8 on a 64bit one.

POINTER_SHIFT

static final int POINTER_SHIFT

The pointer size power-of-two. Will be 2 on a 32bit JVM and 3 on a 64bit one.

Method Detail

address

long address()

Returns the raw pointer address as a long value.

Returns:

the pointer address