type CtrlEvent = DWORD

type Handler = CtrlEvent -> IO BOOL

type PHANDLER_ROUTINE = FunPtr Handler

withConsoleCtrlHandler :: Handler -> IO a -> IO a

setConsoleCtrlHandler :: PHANDLER_ROUTINE -> BOOL -> IO ()

This function isn't suitable when we want to set the cTRL_C_EVENT handler. If you want to set the cTRL_C_EVENT handler, use c_SetConsoleCtrlHandler instead.

c_SetConsoleCtrlHandler :: PHANDLER_ROUTINE -> BOOL -> IO BOOL

mkHandler :: Handler -> IO PHANDLER_ROUTINE

cTRL_C_EVENT :: CtrlEvent

cTRL_BREAK_EVENT :: CtrlEvent