question on event

[Doyon]

What's the type of the new value for many condition in a event loop. The wire has a dark mauve color ?

Thx

[Doyon]

allright it's a variant

 How I'm supposed to know in which format I have to put it ? 

[mikeporter]

The datatype of the NewVal and OldVal terminals in a value change event matches the datatype of the control the event is on. Clusters or stings can be pink or mauve colored.

Mike...

[smercurio_fc]

That depends on the event and the control that generated the event. In the "Cluster and Variant" palette there is a Variant to Data function for converting the variant to a G datatype.

[Doyon]

What's G type

[mikeporter]

For variants it depends on the datatype that was passed to the variant control - which can be anything... Can you post a piece of the code?

Mike...

[Doyon]

What I have to do if I want to get these informations from new value :

it's from the array of boolean or from array of enumeration

if it's from the array of enumeration what I changed ?

Thx

[mikeporter]

Ok, the reason that you have a variant datatype is because you have two controls with different datatypes assigned to the same event. The attached code shows how you can tell which one actually fired the event and convert the variant back into a standard LV datatype.

Mike...

[smercurio_fc]

Another option is to simply separate the events and have them handled in two separate event cases. Then, the "NewVal" dataype will match the datatype of the control that generated the event and you don't have to worry about variants.

Note: Event structures are normally run inside a while loop. Please look at the examples that ship with LabVIEW that show you how to use the Event Structure.

[Doyon]

Thanks both of you