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post
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post
post program callback_routine command
The post command provides a means of sending commands to other Tcla
programs that are currently running on your Amiga. "post" functions
like the send command, except that post does immediately returns (rather
than waiting for the remote command to execute and be replied to), and
the user calling post can supply an optional callback routine, which will
be sent to it by the remote program when that program finishes executing
the requested Tcl command. For example,
send smusloader song load foo
would send a command to program "smusloader" to load song "foo" and
wait for smusloader to reply.
post smusloader loaddone song load foo
would also send a command to smusloader to load foo, but it would return
immediately. Later, when foo finishes the request, it will send a
command, in this case "loaddone" to your program, with arguments being
the result string and TCL_OK/TCL_ERROR return value passed as arguments
to your routine.
If an empty string is sent, return is still immediate but no callback
is performed.