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org.lwjgl.util.harfbuzz

public Interface hb_reference_table_func_tI

extends CallbackI
Known Direct Implementers
org.lwjgl.util.harfbuzz.hb_reference_table_func_t
Annotations
@FunctionalInterface
@NativeType:hb_reference_table_func_t
Imports
org.lwjgl.system.*, org.lwjgl.system.libffi.*

Type


hb_blob_t * (*invoke) (
    hb_face_t *face,
    hb_tag_t tag,
    void *user_data
)

Field Summary

Modifier and TypeField and Description
public static final FFICIF
CIF

Method Summary

Modifier and TypeMethod and Description
public default void
callback(long
a pointer to the memory used for the function's return value.

If the function is declared as returning void, then this value is garbage and should not be used.

Otherwise, the callback must fill the object to which this points, following the same special promotion behavior as LibFFI#ffi_call. That is, in most cases, ret points to an object of exactly the size of the type specified when CIF was constructed. However, integral types narrower than the system register size are widened. In these cases your program may assume that ret points to an ffi_arg object.

ret, long
a vector of pointers to memory holding the arguments to the function
args)

Implements org.lwjgl.system.CallbackI.callback.

The Java method that will be called from native code when the native callback function is invoked.
public default FFICIF
getCallInterface()

Implements org.lwjgl.system.CallbackI.getCallInterface.

Returns the libffi Call Interface for this callback function.
public long
invoke(long
an hb_face_t to reference table for
face, int
the tag of the table to reference
tag, long
user data pointer passed by the caller
user_data)

Callback function for face_create_for_tables.

Inherited from org.lwjgl.system.CallbackI:
address

Field Detail

CIFback to summary
public static final FFICIF CIF

Method Detail

callbackback to summary
public default void callback(long ret, long args)

Implements org.lwjgl.system.CallbackI.callback.

Doc from org.lwjgl.system.CallbackI.callback.

The Java method that will be called from native code when the native callback function is invoked.

Parameters
ret:long

a pointer to the memory used for the function's return value.

If the function is declared as returning void, then this value is garbage and should not be used.

Otherwise, the callback must fill the object to which this points, following the same special promotion behavior as LibFFI#ffi_call. That is, in most cases, ret points to an object of exactly the size of the type specified when CIF was constructed. However, integral types narrower than the system register size are widened. In these cases your program may assume that ret points to an ffi_arg object.

args:long

a vector of pointers to memory holding the arguments to the function

Annotations
@Override
getCallInterfaceback to summary
public default FFICIF getCallInterface()

Implements org.lwjgl.system.CallbackI.getCallInterface.

Doc from org.lwjgl.system.CallbackI.getCallInterface.

Returns the libffi Call Interface for this callback function. [INTERNAL API]

Returns:FFICIF

the CIF structure for this callback function

Annotations
@Override
invokeback to summary
public long invoke(long face, int tag, long user_data)

Callback function for face_create_for_tables.

Return value: (transfer full): A pointer to the tag table within face

Parameters
face:long

an hb_face_t to reference table for

tag:int

the tag of the table to reference

user_data:long

user data pointer passed by the caller

Annotations
@NativeType:hb_blob_t *