If the function succeeds the return value will be status of the
OnPacketsRecv event handler
using flag. Default value is FALSE.
Description:
ReceiveManyAtOnce flag was introduced for setting of using
OnPacketsRecv event handler.
To use OnPacketsRecv you should set
ReceiveManyAtOnce flag in TRUE before QueStart function call, in
this case internal thread of the packets queue will call
OnPacketsRecv event handler instead of
OnPacketRecv.
ReceiveManyAtOnce flag status changing during internal thread execution will not cause changing of
OnPacketsRecv and/or
OnPacketRecv event handlers.