event structure

[bapoyet]

Hello
I 'm programming with LabView 7.0 and I use event strucutre. I've got few buttons with similar actions. I want to know how can I detect wich button has been pressed. It will allow me not to multiply cases in the event structure.

Thanks for your help.

Benoit

[PauloM]

Hi,

On the left of your event structure there are a few parameters that you get from it.
One of them is CtlRef, witch is a reference to the control that triggered the event.
You can connect to it a property node or event nodes to do whatever you want to do with the control - know it's name, it's value, ...

Hope this helps,
Paulo

[bapoyet]

Hi
thanks for your answer
but I don't understand : I've got 3 buttons and I added an indicator on this CtlRef. I don't see any difference when I use one or one other button.... How can I see witch button has been cliqued with this component ?


Thanks for your help

Benoit

[becktho]

Hi

I'd suggest you to use the producer consumer pattern.

So each time one of those buttons is clicked, you produce the same element (usually this means enqueueing something). The consumer then start always the same action.
To see which button was pressed, you can write a numerical constant, depending on the case of the event-structure to an indicator. In the consumer you then will be able to read the value and decide what to do exactly.

Another way is to wire the control refnum to a property-node - so you can read the properties of this button.

Hope this helps.

Thomas

Message Edited by becktho on 06-17-2005 11:23 AM

Message Edited by becktho on 06-17-2005 11:24 AM

[di-marker]

Hello bapoyet,

i hope this example can help you.

Greets,
Marko

[LV_Pro]

Or, for a variation, this one


P.M.

[LV_Pro]

Oop, sent it and then saw that you are using 7.0, try this one.

P.M.