Current MSpace PViewport (not active) - Reactor question

Hi all, I'm stumped again. I have kludged two ways two determine which
pviewport *would be* active if mspace is toggled, but neither is valid in my
reactor and I keep thinking there ought to be a more direct way anyway. So,
isn't there a more direct way to determine this? Kludges follow.

Code:

;;; Kludge #1: Relatively beautiful :), but ssget + reactor = bad.
(if (ssget "x" '((0 . "viewport") (68 . 2)))
(vla-Item (vlax-get ActiveDocument 'ActiveSelectionSet) 0)
)

Code:

;;; Kludge #2: "If mspace is toggled."  HA!
;;; Unfortunately, toggling mspace is one of my reactor's triggers...
(defun MWE:GetcPViewport (vp)
(if (not (vl-catch-all-error-p
(vl-catch-all-apply
'vla-put-MSpace
(list ActiveDocument :vlax-True)
)
)
)
(progn
(setq vp (vla-get-ActivePViewport ActiveDocument))
(vla-put-MSpace ActiveDocument :vlax-False)
)
)
vp
)

 

;;BY LUCAS
;;which pviewport *would be* active if mspace is toggled
(defun GETCPVIEWPORT (/ LAYOUTNAME)
(setq LAYOUTNAME
(vla-get-name
(vla-get-layout
(vla-item
(vla-get-blocks
(vla-get-activedocument (vlax-get-acad-object))
)
"*PAPER_SPACE"
)
)
)
)
(ssname (ssget "x"
(list '(0 . "VIEWPORT") (cons 410 LAYOUTNAME) '(68 . 1))
)
0
)
)

 

Thank you Lucas, but it won't work in this context (see kludge #1...).
Selection set operations are not allowed in reactor functions.

James

 

Hi James,
What's the point? How would you use this info? What info
do you need? (vla-object, handle, or viewport number)

If just the viewport number, then use (vports)
(cadr(vports)) = previous viewport number.

 

Hi Doug,

Perhaps I should have included "Academic Excercise" in the long subject
line. , If that doesn't tell you all you need to know then...
Sorry, guess I cut my code too short again. Multi-Level question:

Level 1: Generally speaking, it seems like there would be a reactor
compatible way to get the 'current' viewport (as described). I'm not seein'
it.

Level 2: Specifically, I'm trying to get the handle, which of course I can
get if I have the vla-object. Thank you for the (vports) tip. I wasn't
aware of that (or had forgotten). But I still don't know how to get to the
handle w/o using a selection set. Actually, I think my main stump has to do
with ActiveX. With the variety of ways to determine this via viewport
numbers, I wonder why there is no viewport number ActiveX property or
method? Or have I just overlooked it?

Level 3: Why do I want this?
1. A SS (System Set - e.g. Plumbing, Lighting, etc.) is stored; per
viewport; via handle for multi-session use.
2. A pull-down menu indicates the current SS via cvport sysvar reactor.
3. In multi-viewport layouts, with pspace active, the 'current' viewport
SS should be indicated in the menu and therefore has to be determined within
the reactor.

As you can see, this is pretty minor in the scheme of things. If the answer
is no, as I think it is, I won't really be any worse off for it (perhaps
better in fact). I mainly posted on the basis of 'levels' 1 and 2, out of
curiosity. IOW, if anyone -just happens- to know, I'd be interested. But I
don't want anyone spending a bunch of time trying to figure it out on my
account.

Thank you again Doug,

James