Use a Reactor To Catch the Mouse Wheel...

I think the title says it all...

I am looking for a way to notice when the mouse wheel has been used. I
tried catching the commandEnded using a reactor but apparently it is not
doing the Zoom command. Or seemingly any other command for that matter.
The mouse reactors seem to only be Right click and Double click.

Is there a way, either through VLISP or VBA that I can find out when someone
has zoomed (in or out) via the mouse wheel?

Thank you,
Kevin Grigsby

 

Not that I know.

 

One would think that Autodesk would have enabled the values of "viewctr" and
"viewsize" to trigger the :vlr-sysVarChanged and :vlr-sysVarWillChange events,
but alas; they haven't. The only way I know how to monitor the change in
VisualLsip is via a (grread) loop.

 

Of course I agree that it is an ... "oversite" shall we say.

I need to catch it whenever. Middle of a command, not in a command. I am
not sure if (grread) will do the trick. I'll look into it. I may check
Microsoft site to see if I can catch it at the OS level and then pass data
to AutoCAD...

Thank you for your help.
Kevin Grigsby