> ## Documentation Index
> Fetch the complete documentation index at: https://devdocs.xbox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# PFMemIsUsingCustomMemoryFunctions

> Determines if custom memory functions are being used.

Determines if custom memory functions are being used.

## Syntax

```cpp theme={null}
HRESULT PFMemIsUsingCustomMemoryFunctions(  
    bool* isUsingCustomMemoryFunctions  
)  
```

### Parameters

**`isUsingCustomMemoryFunctions`**   bool\*<br />*output*

Indicates if custom memory functions are in use.

### Return value

Type: HRESULT

HRESULT return code for this API operation.

## Requirements

**Header:** PFPlatform.h

## See also

[PFPlatform members](/services/playfab/api-references/c/pfplatform/pfplatform_members)


## Related topics

- [Services C API overview - PFPlatform.h](/services/playfab/api-references/c/pfplatform/pfplatform_members.md)
- [game_chat_free_memory_callback](/reference/chat/gamechat2/functions/game_chat_free_memory_callback.md)
- [Memory management in the PlayFab Unified SDK](/services/playfab/sdks/unified-sdk/memory-management.md)
- [PFMemSetFunctions](/services/playfab/api-references/c/pfplatform/functions/pfmemsetfunctions.md)
- [HCMemSetFunctions](/reference/live/httpclient/httpclient/functions/hcmemsetfunctions.md)