Retrieves the required buffer size to call the _WinAPI_GetRawInputBuffer() function
#include <WinAPISys.au3>
_WinAPI_GetRawInputBufferLength ( )
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. |
Search GetRawInputBuffer in MSDN Library.