GLFWDeallocateCallback (LWJGL 3.3.1 - GLFW)

java.lang.Object
- org.lwjgl.system.Callback
- - org.lwjgl.glfw.GLFWDeallocateCallback

All Implemented Interfaces:

java.lang.AutoCloseable, GLFWDeallocateCallbackI, org.lwjgl.system.CallbackI, org.lwjgl.system.NativeResource, org.lwjgl.system.Pointer
```
public abstract class GLFWDeallocateCallback
extends org.lwjgl.system.Callback
implements GLFWDeallocateCallbackI
```
The function pointer type for memory deallocation callbacks.
This is the function pointer type for memory deallocation callbacks. A memory deallocation callback function has the following signature:
```
 void function_name(void* block, void* user)
```
This function may deallocate the specified memory block. This memory block will have been allocated with the same allocator.

This function may be called during Init but before the library is flagged as initialized, as well as during Terminate after the library is no longer flagged as initialized.

The block address will never be NULL. Deallocations of NULL are filtered out before reaching the custom allocator.
Note
- The specified memory block will not be accessed by GLFW after this function is called.
- This function should not call any GLFW function.
- This function may be called from any thread that calls GLFW functions.
Type
```
 void (*GLFWDeallocateCallbackI.invoke(long, long)) (
     void *block,
     void *user
 )
```
Since:

version 3.4

Nested Class Summary
- Nested classes/interfaces inherited from interface org.lwjgl.system.Pointer
  org.lwjgl.system.Pointer.Default

Field Summary
- Fields inherited from interface org.lwjgl.glfw.GLFWDeallocateCallbackI
  CIF
- Fields inherited from interface org.lwjgl.system.Pointer
  BITS32, BITS64, CLONG_SHIFT, CLONG_SIZE, POINTER_SHIFT, POINTER_SIZE

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static GLFWDeallocateCallback`	`create(long functionPointer)`	Creates a `GLFWDeallocateCallback` instance from the specified function pointer.
`static GLFWDeallocateCallback`	`create(GLFWDeallocateCallbackI instance)`	Creates a `GLFWDeallocateCallback` instance that delegates to the specified `GLFWDeallocateCallbackI` instance.
`static GLFWDeallocateCallback`	`createSafe(long functionPointer)`	Like `create`, but returns `null` if `functionPointer` is `NULL`.

Methods inherited from class org.lwjgl.system.Callback
address, equals, free, free, get, getSafe, hashCode, toString

Methods inherited from interface org.lwjgl.system.CallbackI
address

Methods inherited from interface org.lwjgl.glfw.GLFWDeallocateCallbackI
callback, getCallInterface, invoke

Methods inherited from interface org.lwjgl.system.NativeResource
close

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- Method Detail
  - create
```
public static GLFWDeallocateCallback create(long functionPointer)
```
    Creates a GLFWDeallocateCallback instance from the specified function pointer.
    
    Returns:
    
    the new GLFWDeallocateCallback
  - createSafe
```
@Nullable
public static GLFWDeallocateCallback createSafe(long functionPointer)
```
    Like create, but returns null if functionPointer is NULL.
  - create
```
public static GLFWDeallocateCallback create(GLFWDeallocateCallbackI instance)
```
    Creates a GLFWDeallocateCallback instance that delegates to the specified GLFWDeallocateCallbackI instance.