SendMessage(port$, cmd$[, ...])
cmd$to the message port specified in
port$. The command specified in
cmd$must not contain any space characters. Additionally, you can send an unlimited number of arguments to the message port. Just pass them as optional arguments after the command name. The optional arguments must be passed as strings.
The port specified in
port$ must have been created previously by a
call to CreatePort(). Please remember that port names
are case sensitive, i.e. "MYPORT" and "myport" denote two different message
ports. For style guide reasons, port names are usually in upper case only.
The message will be sent to the specified message port in form of a
OnUserMessage event that will be forwarded to the callback you
specified when installing this event handler using InstallEventHandler().