control value change

[grahamwebb]

How can I get a boolean signal that tells me when a control value has changed? .. I have a few case structures and would like them to operate when their control changes value, there a lots of different types of control, and I do't want to use the event structure.

[Broken_Arrow]

The attached VI will alert you (via boolean) when a U32 changes. Just change the datatype in the VI to match your datatype.

edit: I just re-read your post. If you have lots of control types, try the Data Changed VI from Open G. It is polymorphic (wire any data type to it and it adapts).

Personally, I use these VI's for only a few datatypes, so I have a small collection I've made -- U32, DBL, String.

[jcarmody]

An Event Structure is what you should use to operate when a control's value changes.  Why don't you want to?

[tbob]

Yes, use an Event Structure.  See attached VI.