Generate the event

Similar Questions

• Generate the event by timeout

  Hi all

  I have a structure of the event, whose events are all s 'change of the value' of the buttons on the front panel (each of them did switch a light when you click on it).

  I need one of the events to run also in the case where a certain time elapses (so that one of the lights to blink).

  Is there a way to generate such an event?

  I thought about creating a loop timed running in parallel, which generates an event 'false' to each iteration... but how this false event be generated? (it looks like all the events that can be handled by an event structure are generated by human action, such as push buttons, dragging the mouse etc..)

  Thank you, best regards

  It worked, but I had to use a parallel loop as suggested by johnsold.

  Thank you all!

• generate the event user triggers two events structure

  Hello

  I would like to generate a while a user event that triggers events in two or more loops loop event.

  I have attached a non-fonctionnel project VI, so easier to show what I would understand.

  My experience is that user generated event cause that a case of Structure of the event, not both. Why? What if I want the two loops of the event that will be raised? How can you make with the user event?

  Maybe someone could explain this a bit deeper?

  Thank you very much!

  Kind regards

  PS. : new problem with forum upload file...

  So here's the VI in my dropbox:

  https://DL.dropboxusercontent.com/u/8148153/draft_to_show.VI

  Classic mistake.

  You need TWO 'register for events', the output of each class to a separate structure of the event.  Then it won't work.

• Generate the event when the focus lost

  Hello

  is there a way to capture an event when a textbox control lose focus?

  Thank you.

  Yes there is, just create an event filter button on this control of the chain and when a tab is entered you trigger your (re) load event. Or you can set a keyboard shortcut for this field (such as ctrl-D) to define a group of controls to a default state.

  What are the complications that would keep a button 'Load' of work? Maybe things are too complicated and we need to simplify things a bit.

  Mike...

• Value property (signage) for the event - button press the joystick

  I tried to use my Logitech joystick button to trigger events.  I read several messages and LV help on how to register for events, and I have not found exactly what I need.

  I understand that events are generally not triggered by contributions of NON-INTERFACE, but I keep reading messages that make it sound possible.  Book LV Basics II says: "NOTE of Clusters are the only container objects for which you can generate events.  LabVIEW generates events control for clusters, before it generates events for the objects they contain, except in the case of the value change event.  They Value Change event generates the event part of the cluster, click the cluster itself. »

  So, the gamepad buttons and axes are in clusters and I'm trying to detect a change in value for items in a cluster (see the attached below .VI), but the event is not the trigger.  If I press the button 9 on the broomstick, the LED should light and channel indicator should say that the event has been triggered.  It is a simplification of what I'm trying to do, but I think that if I can do this simple case work, I can do the rest.

  It was created in LV10.

  So what I am doing wrong?

  Thank you, Ed

  Oh, I think that we have understood what you have when asked. We all said that you need ASK the joystick in a LOOP

• Programatically change control to generate and event...

  I add some improvements of the user (anti-screw-it-up functions) to ensure the desired process are executed.

  First question: if I have handles by a change of value in a text control, an event (event occurs when you press enter or exit control with the mouse) the event will also occur if you leave the control by changing by programming the focus to another control?

  I'll try and put in place a vi temp to test this, but wanted to see if anyone had tried this and if it works or not.  My other option is to set up several instances of the event but I was hoping to use a single case to handle everything.

  A few details, I have a test system that tests a product automatically when the product is placed in a cradle and the cradle is put in position and active a prox sensor.  At the end of the test, the system waits for prox sensor turn off before resetting the system.

  If a device goes down, there are options to rework and the unit can be retested.  When it fails, a label prints defining failure modes and provides a number of failed series.  When the device is tested again, failing serial number is entered into a text control. I want the sequence of re - test (queued upward at the event) occur when 1, a failing serial number is entered or two a key (with mouse) I'm pretty sure by pressing a button would in turn automatically create the event of change of control of text so my button can no doubt be a fictitious button just for appearances.

  When the hole is if the user enters a serial No. failed and don't leave the command and then committed a pump to start the test.  Can I use a function of "empty access/string path ' but the control will continue to show empty as if nothing has been entered until you press the Enter key or the mouse is used to exit the control."

  If I can generate the event by changing the focus, then it will ensure that if you enter a failure s/n, the sequence of re - test occurs and if nothing exists in this domain, it performs a first test of time.

  A bit long-winded for sure, but any thoughts are appreciated.

  Can't really post a simple code that this feature is in my top level vi and I have a very large app justifying download.

  Doug

  Yes, change in focus is the same by clicking with the mouse outside the control.

  /Y

• Cancellation of registration user stored in the shift register event generates the error 1 if Subvi runs intermittently

  Hello

  I'm trying to understand the behavior of the attached excerpt from a larger overall vi functional.

  In a State, I'm generating a user event and in a State later unsubscribe from the event and destroy it.

  Now, if I went through the VI together in one step (i.e., step through events? set to FALSE), the VI runs without generating an error. However, if I run the VI by intermittent and output after each execution of the loop, the vi generates error 1. Why is it so? Please notify. Thank you.

  Peter

  Why are you registration and deregistration of events user, but you have no event structure in your VI who use them?

  When you run events, probaby the event you registered disappears when your VI stops running.  If you were able to keep your VI in the foreground running, then the life of the event would persist.

  The event number still exists in the uninitialized shift register, but it does not say more once your high level VI stops and you get the error 1.

  If it was really a global functional VI, you would terminals connected to the connector table in your VI, you would call this as a Subvi as part of a main VI and life event would persist and you wouldn't mistake 1.

• Error 1 to generate the user event

  I have a master/slave VI tester to evaluate the functioning of a Global functional error which should gather errors are generated in each loop.  I get 1 error: invalid parameters to the user events VI generate in the FG of entry error and do not know why.

  I enclose my (LV 8.5) shots of screw and screen, because I think that images would explain better than words.  I have documented the code to indicate what should happen and what is happening.

  Please let me know if you need more details.  Thank you! Your help is appreciated!

  ~ Kristen

  In the case of initialization of your VI main, you're going to initialize the FGV Subvi error.  But you can't give the refnum of user events to store in the shift register.

  When you use this FGV later, it uses the empty refnum into the shift register and sends that to generate the user event, and it gives an error.

• Generates an event on the indicator

  I'm developing a program in which I need to generate an event on the indicator, the project is as we give 4 entries for LabVIEW vi equipment, since these 4 controls are through material I can't generate events on them, so I'm trying to generate an event on the indicators of these controls , but the structure of the event does not respond when I use the value on the display change event. After doing some research, I got to know that we can use the value property (Signaling) to generate events on the indicator, but I don't get how to use it.

  This is the vi in which I train, this is not the project initial vi, it's just the vi to learn how to generate events on the indicator.

  Thanking you

  You create a value of signage as follows: click with the right button on the Boolean value and choose Create > property node > value (signaling)

  If send you a value to this terminal will trigger an event.  For example see the image:

  

• Structure of the event in primary vi and sub - VI with queues

  Hi all

  I have an application that uses the architecture of producer-consumer in which a queue transmits messages of a main VI by a Subvi, in response to the events of the user in the front panel. Inside the Sub VI, the queue is removed and treaty based on the corresponding message, and the result is displayed on the façade the sub of VI. User events are captured in the main VI using a Structure of the event. This works as expected.

  However, I also the controls on the Panel before the sub - VI to change the queue. My approach is to have another structure of the event in the VI sub for this. However, while the events in the main work of fine VI, events of sub - VI never treated.

  A simplified sandbox VI of what I'm trying to do is attached. As you can see, the main VI events are triggered as expected, but events in the sub VI are never triggered.

  I watched this white paper: detect an event in a Subvi from a high level VI , but it's not exactly what I'm trying to do. Instead, I'm just trying to detect an event generated within the Subvi. I searched this forum and found some research related, but none of them seemed to answer what I'm trying to do.

  Thank you

  Matt

  Your major issue here is the loop location.  While the structure should be inside the Subvi to make a message in the appropriate queue manager.  In fact, you should have 2 loops within your Subvi: 1) the QMH and (2) of the event loop.  You must use a user event to congratulate the event loop in the Subvi to stop.  You should NOT use the time-out of the Structure of the event unless you absolutely must.  And since everything in the Subvi is the message function, you do not have expectations.  They will be inactive (no CPU using) when there are no items to process from the queue or queue.

• structure of the event + while loop

  Hello, I am trying to understand how to unite two while loops in attached VI for half a day

  The first loop creates a state machine solid which reacts on each key and runs one of the structure cases. (that part works very well)

  The second loop, always generates the random number, but it stops the generation during the time where one of the structure cases events are executed. (this is the part ticky)

  Any suggestions?

  If you want your random number to stop so that the user triggered events are running, you should be able to simplify your design a lot.

  It can be done with a loop using the case of timeout.

• How to merge the event structures?

  I have a program of VI script that reads a text file of records and displays a structure of the event.  It works very well because it creates all the controls and indicators I need associated with the defined registry and code backend (i.e. the structure of the event).

  After I generated all this code, I copy and paste in the main VI I develop.  Everything works very well.  The only problem is that there are 100 text files from separate registry.  This means that I end up with 100 separate event structures.  Although it works, it takes a lot of space and I prefer to combine them.  However, each event structure has anywhere from 15 to 75 entries, so to do this manually is not an option.

  Is it possible to selectively merge the event automatically structures?

  I guess I could write a labview scripting routine that could get a reference to the structure of the event in VI, then merge... but part of the problem there is that there are a handful of structures of event I want to separate them just because they are not associated with the set of registers, that I mentioned.

  
  

• structure of the event to turn on and off a LED

  Good afternoon

  I would like to activate a part of my algorithm according to the value in another part. To make it easier, I symbolize the value by a button and tried a structure of user event to turn on or turn off an LED located in another while loop.

  I can turn on the LED, but unfortunately I can't spend off of the LED thereafter.

  It is possible to change the structure of the event and select the option "change value". However, I would like the fatest way to turn on and off using the structure of the event and the Bay. I mean I would like activate a part of the algorithm only if the button is enabled for not having a continuous audit of the value of the button by the structure of the event.

  Please, if anyone has an idea to turn off the LED (after the switch on), add a comment without hesitation.

  I will be happy to solve this simple problem.

  Thanks in advance for your help.

  Ragards

  You have a race condition.

  When you click stop, it's a race about whether if the event gets not saved and destroyed by the removal of the stem all loop against sending the same user in the lower loop.

  Why it only seems to happen with the case of false must be a quirk of how the code is compiled and the order, it is run.

  If you put a step between your Boolean switch and LED, for me anyway, the error is now generated on the true case of the structure of matter (always false for switch.).

  If you put a constant error in the lower loop and wire while guaranteeing the Unregister event so that you now it does not run until the two while loops are arrested, then I don't see a mistake regardless of the value of the Boolean switch when you click stop.

• Can I record a value Object Variable Global change in a structure of the event?

  I have revealed a global variable to the user via a panel of sup, so that the user directly changes a global variable Panel.  This works very well for this application.

  However, I would like to respond to that in a structure of the event.

  I tried to register for the GV-> [command] Panel.  It seems to work, but the changes do not generate an event.

  I then tried to save the commands individually.  Also hosted in the code, it did not work at run time.

  Is this possible?  Any ideas on how to make it work?

  
  

• Worth the user events until the structure of the event runs?

  If I create and enter a user event and immediately generate this event before that my structure of the event has seen the refnum inscription, is the event that is always guaranteed to be seen by the structure? In other words, events are queued to the top? It works, but I wonder if I can count on it. I am very sure that I can but I'm setting up a production code and want to be sure that I do not take just the benefit of a bug.

  A picture is worth a thousand words.

  

  To my knowledge, the registry for event creates the queue. This behavior is always the same in 7.1, so don't expect to change.

  I think that there was a recent discussion on the lavas on that, but I did not.

  Felix