Tcl/Tk in a Nutshell

Name

sybpoll

sybpoll handle [timeout] [-all]

Return a list of handles that have results available, or a null string if no results are available. The handle parameter must be a valid Sybtcl handle.

An optional timeout parameter indicates how long to Wait, in milliseconds, before returning. The timeout value can be 0 for polling (the default) or −1 to wait indefinitely until results are available.

The optional parameter -all indicates to check all Sybtcl handles that have asynchronous requests pending.