Navigation
Unreal Engine C++ API Reference > Runtime > Core > Async
Inheritance Hierarchy
- IAsyncReadFileHandle
- FAsyncReadFileHandleNull
References
| Module | Core |
| Header | /Engine/Source/Runtime/Core/Public/Async/AsyncFileHandleNull.h |
| Include | #include "Async/AsyncFileHandleNull.h" |
Syntax
class FAsyncReadFileHandleNull : public IAsyncReadFileHandle
Remarks
An IAsyncReadFileHandle that returns only failed results, used when a function has failed but needs to return a non-null IAsyncReadFileHandle.
Overridden from IAsyncReadFileHandle
| Type | Name | Description | |
|---|---|---|---|
  |
IAsyncReadRequest * | ReadRequest
(
int64 Offset, |
Submit an async request and/or wait for an async request |
  |
IAsyncReadRequest * | SizeRequest
(
FAsyncFileCallBack* CompleteCallback |
Request the size of the file. This is also essentially the existence check. |
  |
bool | UsesCache () |
Return true if this file is backed by a cache, if not, then precache requests are ignored. |