Reactors and 3rd party programs

[brawleyman]

I am using HydraCAD on my machine. There is a command called "HCAD_PRETTYPIPES" that creates a thick line between symbols for pipe lines, I think it is a .dll file. I would like to run a command after that one is done running. The command I would like to run afterward is called "refreshdwg" which scales the pipe line width and some other things.

 

I am brand new to reactors and don't really know where to start. Is this even possible? Here is the code I have conjured up, but nothing happens.

 

(vlr-command-reactor nil '((:vlr-commandEnded . endCommand)))

(defun endCommand (calling-reactor endcommandInfo / thecommandend)
(setq thecommandend endcommandInfo)
(if (= thecommandend "HCAD_PRETTYPIPES") (c:refreshdwg))
(princ)
);defun

[Hippe013]

I use the following code to remind myself how the reactors are working.

 

(vlr-command-reactor nil '((:vlr-commandended . sayit)))

(defun sayit (d1 d2)
 (alert (strcat (vl-princ-to-string d1) " : " (vl-princ-to-string d2)))
 )

 

I would first look at whether this above code triggers the alert. Try using a simple command like line. Keep in mind that your "c:refreshdwg" cannot contain certain code. What code that is not accepted is explained in the help file for reactors. Without knowing more about your code (c:refreshdwg) I couldn't tell you why it isn't working. Hope this helps at least a little.

 

regards,

 

Hippe013

[BlackBox]

Rule #VLR01246932:

 

In Visual LISP, one cannot call a Command within a Reactor's callback function; however, one can call a LISP function (including those prefixed with c:), so long as said LISP function does not contain a Command call, and generally speaking does not prompt for user input.

 

Note - One can successfully call Commands in .NET event handlers, as a generalization; application / document context must permit such a command being invoked, however.

 

 

 

If your Reactor callback function, and the desired LISP function meet that criteria, you'd want to consider registering a CommandEnded event handler if only wanting to react to successfully completed HCAD_PRETTYPIPES command calls, otherwise also include the CommandCancelled, and CommandFailed events.

 

HTH

[BIGAL]

Maybe a simple 2 line script called by a lisp as a defun

(command "script" "prettypies")
HCAD_PRETTYPIPES
(load "refreshdwg")