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EXAMPLES.MAC
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1990-07-29
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; RBcomm macro examples
;
; by Ralf Brown
;---------------------------------------------------------------
; beep every half hour
; continues until another macro file loaded or some other binding
; issues a CANCEL_DELAYED ALL
;
; first, define #199 to have the name HalfHourBeep
#defkey HalfHourBeep 199
F2 DELAYED 1800
CALL HalfHourBeep ; 200-255 are reserved
HalfHourBeep MULTI
BEEP
DELAYED 1800
CALL #199 ; note: same as HalfHourBeep
END
; I have been asked "why CALL instead of PUSHKEY?" and "why doesn't the second
; CALL cause some kind of infinite loop?"
;
; The difference between PUSHKEY and CALL is that PUSHKEY #199 will not cause
; the #199 macro to execute until the next time RBcomm reads the keyboard at
; the terminal emulation level (it would be discarded by the line-input
; function, for example). The CALL executes immediately and then continues
; execution with the next line of the macro (if any). As written, the 'beep
; every half hour' macro will cause a beep even if currently executing another
; macro; with PUSHKEY, the beep would not occur until the current macro
; completes--unless the macro is/will execute a command which takes input, in
; which case the #199 will be lost, ending the repetition. You don't get an
; infinite nesting because the DELAYED command simply stores a pointer and the
; desired time, then exits. Thus, the macro works something like this:
;
; create an event for CALL #199
; exit F2
; ...
; time to wake up and execute the CALL #199
; BEEP
; create an event for CALL #199
; exit #199
; exit CALL #199
; ...
; time to wake up again and execute the CALL #199
; BEEP
; create an event for CALL #199
; exit #199
; exit CALL #199
; ...
; time to wake up again and execute the CALL #199
; etc.
;
; As you can see, at any given time, there is at most one pending event and one
; invocation of #199.
;---------------------------------------------------------------
; display a time-limited message without DESQview message-box
; note: should be on top-most row to avoid a mess if screen scrolls during
; wait interval
;
F3 MULTI
MESSAGE 0 50 "^[[0;5mTimed test message"
DELAYED 3
MESSAGE 0 50 " " ; same length as orig message
END
;---------------------------------------------------------------
; repeatedly try to elicit a response from the remote system
; abort after ten minutes of no response
;
F4 MULTI
DELAYED 600
ABORT_UNTIL ; give up after ten minutes
UNTIL SUCCESS
{
TEXT "\r"
WAITFOR 2 "login:"
}
CANCEL_DELAYED LAST ; no more need for the timed abort
END
;---------------------------------------------------------------
; notify user of any incoming calls (only for DESQview and Hayes-comp modems)
;
OnLoad WHEN 0 "RING^M"
NOTIFY "Phone is ringing"
;---------------------------------------------------------------
; add the standard bindings which have not been overridden
#include "rbcomm"