Apple AppleShare 3.0 File Server Controls - Manual (Page 55)

SCSendMessage
SCSendMessage sends a server message to every user whose user name record ID
(UNRecID) is contained in the array pointed to by scDiscArrayPtr.
Note This call is not supported by Macintosh File Sharing.
Parameter (uses disconnectPB variant of SCParamBlockRec)
Block 16 ioResult word
18 scDiscArrayPtr long
22 scArrayCount word
26 scCode word
30 scFlags word
32 scMessagePtr long
Fields ioResult Word result value: Result code.
scDiscArrayPtr Longword input pointer: Points to the
array of user name record IDs (UNRecID).
scArrayCount Word input value: The number of elements
in the array of user name record IDs
(UNRecID).
scCode Word input value: The server control
code; always SCSendMessage ($0009).
scFlags Word input value: The following bit
must be set:
bUNRFSendMsg There is a message pointed to by
scMessagePtr.
scMessagePtr Longword input value: A pointer to a
Str199 containing the message sent to
the workstations.
Result Codes noErr 0 No error.
AlreadyShuttingDown -1 The server is already
shutting down.
AlreadyDisconnecting -2 The server is already
disconnecting.
paramErr -50 The server is not
running or a UNRecID
is invalid.
SCServerVersion
SCServerVersion returns the server version information.