# Function Reference

# _WinAPI_GetRawInputBufferLength

Retrieves the required buffer size to call the _WinAPI_GetRawInputBuffer() function

#include <WinAPISys.au3>
_WinAPI_GetRawInputBufferLength ( )

## Return Value

Success: | The minimum required buffer size, in bytes.
Failure: | 0 and sets the @error flag to non-zero, call _WinAPI_GetLastError() to get extended error information.

## See Also

Search GetRawInputBuffer in MSDN Library.