Mouse wheel scroll event ON CHANGE?

[Andrey_Dmitriev]

Colleagues,

Very simple question:

How to get mouse wheel scrolling event on change? Without polling?

Is Acquire Input Data.vi the only way to get it?

Thank you in advance,

Andrey.

[MikeS81]

Hi Andrey,

i think it's not build in. I wrote some years ago the attched vi's, because i also miss this feature. These vi's use the "acquire input data.vi", but it only polls if a control has registered for it.

Hope it helps.

Mike

[Wiebe@CARYA]

"Andrey Dmitriev" <x@no.email> wrote in message
news:1235576407442-860112@exchange.ni.com...
> Colleagues,&nbsp;Very simple question:How to get mouse wheel scrolling
event on change? Without polling? Is&nbsp;Acquire Input Data.vi&nbsp;the
only way to get it?&nbsp;Thank you in advance,Andrey.

There is no way to get that without poling.

Regards,

Wiebe.

[Andrey_Dmitriev]

Thanks, Mike,

I have solution similar with yours. I was sure that  I'm missing something, but it seems to be no other way other than polling (with native LabVIEW components). With polling sometimes I have "skipped" events, so end user will get feeling, that software react with delays. Well, I will profile and "balance" my application.

It sould be possible with WinAPI, but may take huge amount of time for impementation. Hell with WaitForSingleObject, DLL Wrapper, events generation from DLL to LV, and bla bla bla...

Ah, there are nothing ideal and "ready for use" in our world. Unfortunately.

Andrey.

[Wiebe@CARYA]

That's cheating!

[MikeS81]

Hi Andrey,

as you said, it's possible with WinAPI. I started to write a function which can do it. I'll upload it in the next days. It only need some more tests.

Mike

Message Edited by MikeS81 on 06-09-2009 06:14 PM

[Andrey_Dmitriev]

Mike,

Thanks for that. Looking forward for your solution.

Andrey.

[tst]

I submitted a request for this here. If you want this in future versions, you should vote for it.

[daveTW]

Hey Mike,

I discovered your VIs today and I want to tell you, I think it's excellent work. Congratulations!

greets, Dave

[parthabe]

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Wiebe@CARYA wrote:

That's cheating!

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What did you mean by this, exactly... ?!