Detect Front Panel Activity

[Michael L.]

Hi all,

my VI needs to react to both front panel activity (which can originate from a lot of different controls) and a notifier. Waiting for the notifier is easy, but how do I find out if there has been front panel activity? The "Wait for Front Panel Activity" VI comes to mind, but because I also have to react to the notifier, I must set a timeout to "Wait for Front Panel Activity". Since the latter has no status output to indicate a timeout, I'm a little lost. Also, what about when I'm waiting for the notifier and some front panel activity occurs? Any ideas?

Michael

[becktho]

Hi Michael

You can use an event-structure. There you can react on events generated by controls on the front panel, but you also can react on events generate programmatically.

Just search the example library.

Hope this helps.

Thomas

[falkpl]

The event structure is the way to go, You can then pick and choose which front panel activity you want. You can put the event structure in one loop and synchronize a second loop to execute your processing (either with notifiers or queues. This allows great control over the what and when actions of a program. The event structure removes any polling and is therefore very responsive and processor non-intensive.

Paul

[Michael L.]

Thanks for the help. I might be back later with a few more questions tomorrow, after I've looked through the examples.

Michael