Generating events

Similar Questions

• user-generated event does not record

  I am having trouble with a user-generated event and hope that someone else has seen the same thing. I'm running LV 9 SP1, with a pretty standard structure of producer-consumer. The producer is event-driven and sends orders to the consumer based on the queue via the queues and the consumer information going back up the producer via the events generated by the user. In most cases, this works perfectly, but in a situation the event generated by the user is not registered by the structure of the producer of the event.

  The problem arises when the producer to place an order for the consumer advertising immediately generates an event. When this happens, the event is usually not treated by the producer - maybe 1 to 100 times the event is considered by the producer. My guess is that the user event is generated before the producer has completed execution of the event structure case who entered the command line of the consumer, which means (for some reason any) he'll never respond to the event. This suggests that event LV structures will not meet created events while they are running. Is this the case?

  I got around the problem by adding a 10ms before generating the user event (to allow for the case of the event at the end of the performance), but would really rather solve the problem if possible. Any suggestions?

  Thank you

  Baymen

  Thus, you do not have the result of the event of registry which contains this loop connected to any other other event that the loop of producer is correct?

  My first guess is that you raise the event and there is a State of race on the event and a loop is getting there faster than the other.

• How not to generate event complex several times? Exclude used events.

  Hi all.
  
  My problem is that I need to generate alerts in my app where time window is 30 minutes away and it is offered on each new incoming events, so if I event1, event2 event3 in the first window of time where event2 and event3 cause an alert and I event2 event3, event4 in the second window of time so my alert will be generated twice , but I need an alert to be generated once.
  
  Is there a solution to filter the events that caused an alert to avoid duplicate alerts?
  
  Kind regards
  Sergey

  I think that the following query should meet your requirement

                  SELECT
                        T.userId as userId,
                        T.totalAmount as totalAmount,
                        T.numEvents as numEvents
                  FROM
                        helloworldInputChannel MATCH_RECOGNIZE (
                            PARTITION BY userId
                            MEASURES
                                  userId AS userId,
                                  SUM(BUY.amount) as totalAmount,
                                  COUNT(*) as numEvents
                            PATTERN ( (B|S)+? (C|T) ) WITHIN 10 minutes
                            SUBSET
                                   BUY  = (B, C)
                                   SELL = (S, T)
                            DEFINE
                                  B AS (B.operation = "BUY"),
                                  S AS (S.operation = "SELL"),
                                  C AS (C.operation = "BUY" AND (SUM(BUY.amount) = SUM(SELL.amount)) ),
                                  T AS (T.operation = "SELL" AND (SUM(BUY.amount) = SUM(SELL.amount)) )
  
                        ) AS T
  

• 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:

  

• 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.

• Events and Photo Albums

  I recently upgraded from the Mavericks to El Capitan and therefore iPhoto has been migrated to Photos.  Is there a reason why I should do the Albums new for new pictures added since migration or can I add new events and save them under iPhoto events?

  Photos does not support events as it existed in iPhoto. Moments replace new auto-generated events. To manually control which is content, you create Albums.

  One of the more experienced members of the forum created a tip user explaining the differences. Sorry, but I cannot visit the tip link now, please search for it.

• Generation of a value change event internally by the application.

  Hello

  How to generate events programmaticaly change value by using the value property of the signal. I find the solutions on the forum who have the solution but the problem on these solution is this property node are within a while loop, so even if the value does not change an event is triggered that is not desired in my application. Can someone give a solution for this.

  Thank you

  Use a feedback node, and a box Structure so that you only write the property node when the value actually changes.

  

• Subsequent event not triggered?

  I have a MAIN VI and VI SUB who communicate through control refnum events. sequence of events is as follows.

  (1) void / vi changes a value in its control and this event is handled in the main vi (this works)

  (2) main vi in response to the event changes one of its control and fires an event to the event handler itself that is managed in the handler of sub - VI.

  the first phase is completed. now, the main vi runs a while loop and the sub vi runs in loop a while and main vi triggeres an event each ~ 150ms. that should be handled in the Subvi. This is the part that does not occur. I can see the main vi updated control, but (if generated) event is not handled by the Subvi. I use node-> (signalling) the Value of the property of the control to change the value and the firing of the event. what may be the possible cause?

  hope my question is clear.

  I found the problem.
  the subsequent events were not carried because the loop in which the event handler ran in a loop * once *.
  That is, the initial condition was itself false then the loop only ran once.
  This loop was controlled by ' stop if true '. He had to be 'continue if true'.
  the Boolean variable that controls this loop was real. This should have been my first clue.

  Sorry for the inconvenience

• 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

• Adding user events

  I have two screws that two raise user events (in the real application may have multiple events, can be added in the future). These screws must be independent of each other to be reused under source code control, so I like to keep a generic if possible solution. When I wire up one after another, the structure of the event only allows me to generate events user to one of the screws (a final) and not from these two subVIs.

  No elegant workaround solution?

  Hi jcurl,

  here a solution for you.
  You have over the "user event on" to the connector pane.
  Then, you can use the node 'Register of events' in your main vi.

  As an attachment, there is a screenshot and set the example.

  Best regards

  Mencef

• event graphics tool palette active?

  Hello users of LabVIEW,.

  Simple question, I hope. How can it detect the Paletter Active of the chart tool has changed? The only solution I found is to use the timeout event and to query the property node. If you use the mouse upwards and the mouse to the bottom of the event for the chart, click on the submenu zoom mouse are not saved.

  Thanks for the help,

  -Troy

  TroyR wrote:

  How can it detect the Paletter Active of the chart tool has changed?

  I don't think that you can, other than by something like what you were doing or by yourself with separate keys and the code. I have not checked in the latest versions, but I guess that no events have been added.

  You can vote for this if you wish (and comments) - http://forums.ni.com/t5/LabVIEW-Idea-Exchange/Generate-event-on-Selecting-a-tool-in-graph-palette/id...

• Set priority higher for front panel events in a Structure of the event

  Hey people,

  I need some advice on the management of events in Labview 2013... I have a structure of the event which handles events of façade (keys) as well as some user events. User events come thick and fast from an external dll. The data as well as this event gets queued at the start and then traced / processed.

  The tricky part is if there are great number of events of the user, the response to the event of the façade is significantly delayed. I get about 80 events back to back user every two seconds. So, if I press a button on the Panel before every two seconds (2 seconds, 4 seconds, 6 seconds... etc) is obviously the delayed answer as opposed to pushing in multiples of 3 seconds (3 seconds then 6 seconds, 9 seconds...) where the reaction is immediate.

  Now I know labview 2013 supports two prioritres while generating events (high & normal) but the problem is in my case, user events come from a dll using the 'PostLVUserEvent' method that does not accept a priority. And I don't see a way to set a priority for the events of façade (keys).

  Any thoughts on how this can be managed?

  Thanks in advance, best regards, Abel.

  The best solution would be to separate user and events of the FP in two independent loops, but I understand that this may be difficult if the two event classes operate on the same data.

  Another possibility is to use two loops serialized, encapsulated together in a larger loop, each containing a structure of the event: the first, with a short timeout, would manage the FP events and could go out on timeout. the second would deal with all user events and would be forced to stop after a predefined number of events managed or, better still, when a quantity preset time has elapsed.

• creating event dll

  Hello

  I have create a warpper dll control ASIO drivers for sound cards. I want to generate an event on the buffer for LV switch can perform the necessary work.

  I finished a first version using a fast while loop in LV, but I think that generates an event is a very elegant solution.

  The problem I have now is to compile my code! Indeed, I found a few questions how to generate events of my dll. I get "extcode.h" and some other stuff from "C:\Program NIUninstaller Instruments\LabVIEW 8.5\cintools".

  Visual C++ 2008 not now to bind the functions:

  Error 1 error LNK2028: token unsolved (A 0, 000295) "void __cdecl PopulateStringHandle (struct LStr * *, char *)" (?) PopulateStringHandle@@$$FYAXPAPAULStr@@PAD@Z) referenced in function "public: void __thiscall DriverCluster:nBufferSwitch (long, long) ' (?) OnBufferSwitch@DriverCluster@@$$FQAEXJJ@Z) DriverCluster.obj win32dll

  Thank you for your help and I hope this isn't too stupid question

  Marc

  Hello

  I found the solution, I just had to had the present *.lib in 'used libs' in the folder cintools.

  Sorry for flooding

  Marc

• Creation of all-day event that works for OS 4.2.1 4.5 device

  I am trying to create all day calendar events using the following code snippet:

          protected void insertOneIntoCalendar(EventList el, DateField thisField) {
  
                  if (el == null) {                        return;                }
  
                  BlackBerryEvent bbe = (BlackBerryEvent) el.createEvent();
  
                  if (bbe == null) {                        return;                }
  
                  //                bbe.addString(Event.SUMMARY, 0, thisField.getLabel().substring(0, thisField.getLabel().length() - 1));
  
                  //                bbe.addString(Event.NOTE, 0, thisField.getLabel() + " " + thisField.toString());
  
                  bbe.addDate(Event.START, 0, thisField.getDate() + ltz.getRawOffset());                bbe.addDate(Event.END, 0, thisField.getDate() + ltz.getRawOffset());
  
                  // Checks the Event List to determine if the ALLDAY field is supported                if(el.isSupportedField(BlackBerryEvent.ALLDAY)) {
  
                          // Checks the event to determine if ALLDAY attribute as already be set                        if (bbe.countValues(BlackBerryEvent.ALLDAY) > 0) {                                bbe.setBoolean(BlackBerryEvent.ALLDAY,0,Event.ATTR_NONE,true);                        } else {                                bbe.addBoolean(BlackBerryEvent.ALLDAY,Event.ATTR_NONE,true);                        }                } else {                        System.out.println("*** ALLDAY not supported");                }
  
                  // Checks the Event List to determine if the FB_FREE field is supported                if(el.isSupportedField(BlackBerryEvent.FREE_BUSY)) {                        if (bbe.countValues(BlackBerryEvent.FREE_BUSY) > 0) {                                bbe.setInt(BlackBerryEvent.FREE_BUSY, 0, Event.ATTR_NONE, BlackBerryEvent.FB_FREE);                        } else {                                bbe.addInt(BlackBerryEvent.FREE_BUSY, Event.ATTR_NONE, BlackBerryEvent.FB_FREE);                        }                } else {                        System.out.println("*** FB_FREE not supported");                }
  
                  try {                        bbe.commit();                } catch (PIMException pe) {                        System.out.println("*** Could not commit event");                }        }
  

  Including this code is compiled under JDE 4.2.1

  Run the application on a device running 4.7 (on a 9630), it will generate events throughout the day that are visible in all views of the calendar (works as expected for me).

  Run the application on a device running 4.5 or earlier (as 4.2.1) it will generate all day events which are visible in the view of the order of the day, visible temporarily week view (but if you scroll far they 'disappear') and never visible in the day view.

  Can someone comment on why this code does not work with the OS 4.5 and earlier versions?  All the assumptions have been broken in the code?  Do the specific dates and times assigned at the BEGINNING and END of question even though I'm this assigning an ALLDAY event?

  Thanks for any help.

  By experimentation, the apparent solution must normalize dates at midnight and check the date of the end one day later, as follows:

                  Calendar startCal = Calendar.getInstance(ltz);                startCal.setTime(new Date(thisField.getDate()));                startCal.set(Calendar.HOUR_OF_DAY, 0);                startCal.set(Calendar.MINUTE, 0);                startCal.set(Calendar.SECOND, 0);                startCal.set(Calendar.MILLISECOND, 0);
  
                  bbe.addDate(Event.START, 0, startCal.getTime().getTime());//              bbe.addDate(Event.START, 0, thisField.getDate() + ltz.getRawOffset());
  
                  Calendar endCal = Calendar.getInstance(ltz);                endCal.setTime(new Date(thisField.getDate()));                endCal.set(Calendar.DAY_OF_MONTH,endCal.get(Calendar.DAY_OF_MONTH) + 1);                endCal.set(Calendar.HOUR_OF_DAY, 0);                endCal.set(Calendar.MINUTE, 0);                endCal.set(Calendar.SECOND, 0);                endCal.set(Calendar.MILLISECOND, 0);
  
                  bbe.addDate(Event.END, 0, endCal.getTime().getTime());//              bbe.addDate(Event.END, 0, thisField.getDate() + ltz.getRawOffset());
  

• Event customized to BaseObject programmatically

  Hi all

  I work on HR custom feed import and for newly created users, I need to send e-mail to their managers. But I don't want to put in place a topological sort when you insert a people in D1IM, I decided that what I need is to raise the custom event (for the newly created people) when I'm done with the import.

  How can I trigger an event on some BaseObject programmatically?

  Thanks for any help,

  John

  Hi John,.

  You can take a look in the scripts SDK examples, which are part of the delivery of the product.

  In the Version 7.0.1 you will find them under Modules\QBM\dvd\AddOn\SDK\ScriptSamples

  There is a sample called '10 Generate Events.vb' in the folder '03 Using database objects"that should answer your question.