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API > API/Runtime > API/Runtime/Core > API/Runtime/Core/Async > API/Runtime/Core/Async/FAsyncReadFileHandleNull
- IAsyncReadFileHandle::SizeRequest()
- FAsyncReadFileHandleNull::SizeRequest()
References
| Module | Core |
| Header | /Engine/Source/Runtime/Core/Public/Async/AsyncFileHandleNull.h |
| Include | #include "Async/AsyncFileHandleNull.h" |
virtual IAsyncReadRequest &42; SizeRequest
&40;
FAsyncFileCallBack &42; CompleteCallback
&41;
Remarks
Request the size of the file. This is also essentially the existence check. A request for the size. This is owned by the caller and must be deleted by the caller.
Parameters
| Name | Description |
|---|---|
| CompleteCallback | Called from an arbitrary thread when the request is complete. Can be nullptr, if non-null, must remain valid until it is called. It will always be called. |