I need the event. PreventDefault() when event.cancelable = false

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• Structure of the event - controlled motor not variable

  I have a state machine that includes certain structures of the event. These event structures are used to control stepper motors using an Arduino Mega microcontroller. I'm using labview in 2012.

  The entrance to one of the events is the variable "pour the entry. I want to use it to control the motor speed and direction.

  If I control the motor as shown in the attached image Working.jpg, then the motor functions correctly. If I fix the motor to the steps variable # then the engine moves at the speed set in the right direction depending on whether the entry "pour" is positive or negative.

  However, I want to control the speed of the engine, not the number of steps, with the variable "pay Input". I checked that the values read by the indicator image INPUT_VALUE works do not are of the same order as the specified values, working, by using the "Set Speed". When I connect the value of the entry to the spindle speed of the motors of the Arduino (not_working.jpg) icon, the engine is running, apparently indefinitely at maximum speed. I don't understand why there is a difference in motor behavior between the value provided by these two methods at the entrance to the speed of the motor. I am confused by the present and don't know where to go from here.

  The structure of the event somehow behaves differently when taking a value from outside the structure to this data inside? or y at - it something to do with the opening of the structure on its first loop?

  I have also attached my vi together, even though she may not be the easiest to follow and requires an arduino Mega to run.

  Carlr wrote:

  I have a state machine that includes certain structures of the event. These event structures are used to control stepper motors using an Arduino Mega microcontroller. I'm using labview in 2012.

  The entrance to one of the events is the variable "pour the entry. I want to use it to control the motor speed and direction.

  If I control the motor as shown in the attached image Working.jpg, then the motor functions correctly. If I fix the motor to the steps variable # then the engine moves at the speed set in the right direction depending on whether the entry "pour" is positive or negative.

  However, I want to control the speed of the engine, not the number of steps, with the variable "pay Input". I checked that the values read by the indicator image INPUT_VALUE works do not are of the same order as the specified values, working, by using the "Set Speed". When I connect the value of the entry to the spindle speed of the motors of the Arduino (not_working.jpg) icon, the engine is running, apparently indefinitely at maximum speed. I don't understand why there is a difference in motor behavior between the value provided by these two methods at the entrance to the speed of the motor. I am confused by the present and don't know where to go from here.

  The structure of the event somehow behaves differently when taking a value from outside the structure to this data inside? or y at - it something to do with the opening of the structure on its first loop?

  I have also attached my vi together, even though she may not be the easiest to follow and requires an arduino Mega to run.

  You have a very inappropriate design of "state machine" - even if you do not have same event in more than one of your structures of the event (in addition to time-out), looks that get some of your treatment to go forward until you get something very specific (and in which none of your other user events are being processed).

  I strongly suggest that first set you design of State machine - perhaps follow producer/consumer Design Pattern (events) rather than having everything in a loop, the way you have.  If you keep everything in a loop, you should consider redesign so that you at least allow events to deal with rather than stay in a loop for an indefinite period!

  In any case, in the case where work, you send variable "Set Speed (steps per second)" for engines step by step write vi.  But otherwise, you're feeding 'Entry for' value - are they the same? And to let you know, you send only command "write" step by step when the input value to be paid.

  It's a big mess!  For starters, look at the attached picture, get rid of your structure of the event that has "for the entry" and replace it with what I showed in the picture. (In fact, all your event structures can / must be replaced with a similar logic.) Does not need the event structure in all this, you're just more complicated it must be!

  -DP

  

• Need to reset the button by default when you use the structure of the event?

  When you use the buttons with a mechanical action "releasing lock" to only trigger the same structure with the same 'value has changed', the button does not jump upwards as you would expect.  I can get to behave as I want by adding a "default reset" invoke the node, but this seems somewhat exaggerated.  Is there an easier way to get the button to jump to the top after pressing on?

  The button will reset once it is read by the code. This means that the terminal is inside the structure of the event. If you move outside the terminal, it would read only the beginning of the race and then never and it will not be reset.

  If the terminal is learn the structure of the event, it is read by the code (even if it is not connected to anything) and it reset as soon as the event has a chance to run.

• NEED HELP FAST - façade freezes when I run my program. I have all the events to the interaction of the façade. I don't have a chance to launch an event that I can't even click on anything whatsoever on the front panel?

  All,

  I'm pragmatic disabling most of the façade with a particular event. This freeze happened when I launched this event and then stopped the program in the middle of the event. While the program has been frozen at all times no matter how many times I turned on my computer and turned off and restarted labview. I tried with pragmatism, allowing some of these objects on the front façade of the loop of events without result. What else could it be? When I select the program stops at the structure of the event and is waiting for him. When I have a finite number of thread for the time terminal timeout the timeout event runs and then waits for the structure of the event and I'm still not allowed to do anything.

  Aaron

  Yenkip,

  OK, the moral of the story when programmatically disabling an object to front panel make sure you have the code that allows very early in the program, changing constantly in the middle of the program changes its active status. I tried enabling some of these objects, but not all. When I tried allowing each of them, I realized that everything in the deactivation of the tab control tab control disables not only the ability to change the tab control. IT WASN'T THE STRUCTURE OF THE EVENT. The guys help OR on the phone told me that the structure of the event was obviously the question. I'm fine now.

  Thank you

  Aaron

• Detection of change DAQmx - cancel the event error logging

  I am trying to use DAQmx for detection on some digital lines of changes. I think I installed everything in this article, but I always get error 'Error 1 has occurred to unregister events in the detection of change in Test - Error.vi Unregister'. When I change the structure to register for another event, not involving DAQmx but using the same structure, I get this error.

  I need this implementation on a code that runs for a very long time and according to the above article:

  "Use the Unregister function for events and function to destroy the user events to release the associated events and the reference of user event. LabVIEW unregisters all events and destroyed the existing user automatically events when the top-level VI end of execution. However, to conserve memory resources, National Instruments recommends that you unsubscribe and destroy the user events explicitly, especially in an application that is running for a long period of time. »

  Here are some screenshots of my comic, but also the .vi. Note that the detection of real change does not work well, it's just after I click on 'stop' I get the error generated by the "unregister to events.vi.

  

  

  Note When you transfer the .vi, I saw the issues described on this thread and had to change the name of the file...

  crossrulz wrote:

  You must cancel the registration of the event before deleting the task DAQmx.

  Delete the task implicitly cancels registration of events.  If you disable the task, rather than simply cancel, the event is already cancelled and you don't need two nodes.

  Or quite simply, the event is part of the job.  no tasks, no event and LabVIEW cleans the records for the non-existent event.  Other events that are not 'owned' by similar of e/s Sessions must use the unregister (as of the events of user)

• 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...

• When to use the structures of the event

  I wrote several applications using the state machine architecture.  Generally, these applications have two buttons (I created), a race and give up.  The abort button interrupts the guide and goes to a State of inactivity which loops until the run button is selected.  One thing that I don't like, my programs ending up with one or more local variable for the Cancel button.

  (1) should I use structures event for these types of programs?

  (2) is a program of event also structure a state machine?

  Why would you need local varables for the button abandon? Do simply lock action so it resets automatically.

  If your loop by turning in any case (e.g. for updating views) migh ask both controls. Any necessary event structure.

  ggress1 wrote:

  (1) should I use structures event for these types of programs?

  (2) is a program of event also structure a state machine?

  The event structures are mainly for the manipulation of interaction of the user on the front panel. I encourage you to learn more about the structures of the event so you can make an informed choice on the best architecture of code for a particular programming problem. Maybe you should show us some of your code so that we can decide by using the event structures should improve things.

  A program with event structures is generally much less forgiving of the rookie mistakes. Used properly, they can easily lock your program.

• Multiple connections WebDav - error 1055: cancel the event recording

  Hello

  I use WebDav to extract the files from the controller to the computer.

  It does not work when I use only one connection.

  When I use the same WebDav vi several times to extract the files in different folders, I get error 1055: unregister events.

  

  The first vi continues to operate, but the other stops.

  The vi is attached in the following snippet:

  In order to run it, the joint screws are also necessary ('FileInfo name and Path.vi' and "State.ctl of WebDAV sync").

  

  The second vi I want to run at the same time is exactly the same, but with different name of queue and different data records:

  

  If I delete the function "Cancel registration for events" on the side right, then I get no error, but the second vi stops without explicitly stop the while loop.

  What could be wrong?

  Thank you.

  The problem seems to be related to the use of an event inside a timed loop structure.

  Call loops are designed to be run in certain time intervals, while program alsways waits on the structure of the event inside the loop until an event occurs. These two behaviors are strictly opposed to each other, which could cause problems in this particular case.

  Replace call loops with while loops, seems to solve the problem

  Andreas Jost

  Technical sales engineer

  National Instruments

• Extremely slow start, when I saw the event connect my mouth gaping, LOTS of ERRORS - ideas?

  My system REALLY takes a lot of time to boot, I see that many others have the same problem and I'm once again, sitting here all night get more angry about how to solve this problem, no good at such things tech, great new computer still on warranty, oh yes, but microsoft windows is SEPARATED.  All the guarantees it?  Danger danger danger.

  ActionLog name: Microsoft-Windows-Diagnostics-Performance/Operational
  Source: Microsoft-Windows-Diagnostics-Performance
  Date: 2009-10-19 12:30:32 AM
  Event ID: 100
  Task category: startup performance monitoring
  Level: critical
  Key words: event log
  User: LOCAL SERVICE
  Computer: TracyHome
  Description:
  Windows has started:
  Start time: 227174ms
  IsDegradation: false
  Incident Time (UTC): 10/19/2009-04:26:40
  The event XML:
  
   
     
      100
      1
      1
      4002
      34
      0 x 8000000000010000
     
      1320
     
     
      Microsoft-Windows-Diagnostics-Performance/Operational
      TracyHome
     
   
   
      2
      2009 10-19 T 04: 26:40.796Z
      2009 10-19 T 04: 30:27.245Z
      345
      335
      227174
      137437
      20
      1652
      10448
      28932
      602841088
      0
      4993
      674
      646
      153
      115553
      3
      89737
      fake
      0
      0
      0
      0
      fake
      fake
      fake
      0
      0
      fake
   
  Log name: Microsoft-Windows-Diagnostics-Performance/Operational
  Source: Microsoft-Windows-Diagnostics-Performance
  Date: 2009-10-19 12:30:32 AM
  Event ID: 100
  Task category: startup performance monitoring
  Level: critical
  Key words: event log
  User: LOCAL SERVICE
  Computer: TracyHome
  Description:
  Windows has started:
  Start time: 227174ms
  IsDegradation: false
  Incident Time (UTC): 10/19/2009-04:26:40
  The event XML:
  
   
     
      100
      1
      1
      4002
      34
      0 x 8000000000010000
     
      1320
     
     
      Microsoft-Windows-Diagnostics-Performance/Operational
      TracyHome
     
   
   
      2
      2009 10-19 T 04: 26:40.796Z
      2009 10-19 T 04: 30:27.245Z
      345
      335
      227174
      137437
      20
      1652
      10448
      28932
      602841088
      0
      4993
      674
      646
      153
      115553
      3
      89737
      fake
      0
      0
      0
      0
      fake
      fake
      fake
      0
      0
      fake
   
  

  Your system runs a check of the Performance of Microsoft Diagnostics when starting, why start has slowed to a crawl. And it seems to work many times.  I don't know why this is the case - none of what you posted gives a cause for verification.  Are there other errors leading up to these?  If so, could you put them as well?

  Go to start / search and type msconfig and enter.  Double-click the program icon that appears.  Click the Startup tab and check to see if Microsoft Diagnostics is listed as a startup item - it then, uncheck the box. (I did not thiink it is the problem, but it is best to check to be sure.)

  Try a system restore to a point BEFORE this problem started to occur.  Here's how: http://www.howtogeek.com/howto/windows-vista/using-windows-vista-system-restore/.  Check the box to show more than 5 days of restore points.  If this does not work, try an earlier point or two.

  If this does not work, do a startup repair, boot from the Installation of Windows Vista genuine disc or your recovery disk. Here is the procedure: http://www.bleepingcomputer.com/tutorials/tutorial148.html.  You may need to change the BIOS to do the CD drive first in the boot sequence.  It was boot the PC and wait for the screen where it shows the F key to enter the menu start or start of installation.  Push it quickly. Make the change, save your work and exit.  Insert the CD into the drive and restart.  When you are prompted, press a key to start the PC.

  If you don't have a floppy, you can make a recovery disk to http://neosmart.net/blog/2008/windows-vista-recovery-disc-download/ using a burning like software: http://www.snapfiles.com/get/active-isoburner.html and of course a blank CD.  This recovery file is just as good as one that comes with Vista, but it can't do a reinstall.  You can do a system restore or startup repair or even use the command prompt.  Boot from the CD may be your only option to keep the PC "awake" long enough to make the procedures - which even works.

  If it does not go to Sart / all Aprograms / accessories / command prompt and right click on command prompt, and then click Run as administrator.

  Type sfc/scannow, go and let it run.  It will scan and try to correct some of your system files.  If all goes well, it completes without error, it could not repair (if such errors occur, then post back here).

  Then type chkdsk /f /r and enter and let it run.  It will scan and try to fix bad sectors on your hard drive.

  If that is not working, after return and we work on other solutions to the problem - we have still quite a few options, we can try - but I think that the first option for recovery (System Restore) is likely to work best if you know ehen this started and can find a restore prior to that point.

  Good luck and I hope this helps - but please post back whatever the case.  We are here to help you best we can.

  Lorien - a - MCSE/MCSA/network + / A +.

• What happens in the event the sensor when the IDSMC is down?

  Can someone on the list perhaps point me in the right direction? I'm looking for the following information.

  1. I would like to know what is happening for alarm events to a sensor where the receiver IDSMC is down at the level of the VMS 2.1 server. They stored on the sensor until the handler ID has recovered and then sent?

  2 How many events can be stored in the probe when the receiver IDSMC is down?

  3. is there a good doc Cisco who will describe the process and if so, what url

  My apologies if this has been discussed in a previous thread. Think I remember reading about this process, sometimes back, but were unable to locate the information again.

  It depends on what version is on the sensor.

  SideNote: Security Monitor (SecMon) is the VM tool used to receive and view the messages. Identifiers (IDS MC) Management Center is the VM tool used for the configuration of the sensors. Many users often use IDS MC to signify the two IDs MC and SecMon.

  With sensors version 3.x, there is a process called the post office which transmits the sensor events to SecMon.

  If SecMon (or the post office on SecMon process) were to go down for a while, the process of the post Office on the sensor will store up to 1000 events in an internal queue.

  If SecMon return online then these event 1000 will be sent to SecMon.

  If more than 1000 events are generated while SecMon is declining WHILE the 1000 first events are queued and the most recent events will be abandoned by the sensor until SecMon returns to the top.

  Also these 1000 events are stored in the space of memmory post office. If the sensor is stopped or restarted these 1000 events will be removed memmory.

  Solution: If you believe you've lost events while SecMon is down, so there may still be a way to retrieve these events from the sensor by using a manual method. You must have configured the sensor to ALSO log events in the logs on the sensor. Then every time you think you may have lost events, you will need to manually download the log files of the sensor for this period. If I remember correctly, there is a script that can be run and then load these events into the database to display SecMon.

  With sensors of version 4.x, the process of the post office was replaced by EventServer. The events are placed in an EventStore. When SecMon runs it will connect to the EventServer and ask events. The EventServer will then access the EventStore to shoot events and send them to SecMon.

  The EventStore can contain several thousand alarms (on most sensors, the EventStore is 4 GB of hard drive space) which can be searched for via the EventServer.

  So if SecMon sinks events are always written on the EventStore on the sensor. When SecMon returns to the top, it simply links the EventServer and queries for all the alarms from the time at which it came down. EventServer ALL alarms will then draw in the EventStore from this point on.

  The only events that can be lost would be where there are so many events that he filled the EventStore (EventStore will automatically replace the oldest alarms with the most recent alarms when it is full).

  Or if a user had performed "erase events" on the sensor so that SecMon declined.

  So in version 4.x sensors the sensor will store as many events that will hold the EventStore.

  I'm not aware of a doc that would spell out it for you right now.

  I know that the doc authors are working on an architecture document, but I don't know if he'll get into that detail.

• Need an event to find out when my components are no longer displayed

  Greetings!

  Funny that it is difficult to make such an obvious thing GUI development.

  I have a series of custom components in a viewstack. When one of them get away because the user clicked to see another component, it should be able to know that it is removed! Or at least, there should be a 'aboutToBeDisplayed' event so that it can reset its content!

  These obvious manifestations are in Java, MFC, QT, etc... But I can't find it in Flex!

  Any help would be appreciated!

  When a viewStack changes, the components are not explicitly added or removed.  They are just hidden and displayed.

  You can do things with the show and hide the event:

  http://www.Adobe.com/LiveDocs/Flex/3/langref/MX/core/UIComponent.HTML#event:show

  http://www.Adobe.com/LiveDocs/Flex/3/langref/MX/core/UIComponent.HTML#event:hide

  With a ViewStack, you can also use the change event:

  http://www.Adobe.com/LiveDocs/Flex/3/langref/MX/containers/ViewStack.HTML#event:change

  According to your specific needs, some may be better suited that relate to the components being added or removed from the scene:

  http://www.Adobe.com/LiveDocs/Flex/3/langref/MX/core/UIComponent.HTML#event: Add

  http://www.Adobe.com/LiveDocs/Flex/3/langref/Flash/display/DisplayObject.HTML#event: added

  http://www.Adobe.com/LiveDocs/Flex/3/langref/Flash/display/DisplayObject.HTML#event:addedT oStage

  http://www.Adobe.com/LiveDocs/Flex/3/langref/MX/core/UIComponent.HTML#event:remove

  http://www.Adobe.com/LiveDocs/Flex/3/langref/Flash/display/DisplayObject.HTML#event:remove d

  http://www.Adobe.com/LiveDocs/Flex/3/langref/Flash/display/DisplayObject.HTML#event:remove dFromStage

• My calendar retains the events for a month, but when I look back over the past months, only recurring and default events are preserved.  I have a bad memory and I want that all events held on my calendar.  How can I do this?

  My calendar keeps events a month, but when I think back several months, only recurring and default events are preserved.  I have a bad memory and want to keep all the events, I put on my calendar for a year.  How can I do this?

  Go to settings > Mail, content, timing and you should see an option for synchronization. Make sure that you put in all the events if you want to keep past events calendar

  Alternatively you can also use iCloud.com to restore calendar events that may have been accidentally deleted

  If you've accidentally deleted your calendars, reminders, or contacts of...

  I hope this helps!

• Lightning: How can I permanently change the event organizer email address when he invited?

  I have two email accounts with Thunderbird; one is the default account from which my emails are sent. However, when you attempt to send an invitation to the event through lightning, my secondary email is displayed in the field of the organizer and it cannot be changed.
  Thank you, in advance, for all the answers.

  Right click on the calendar in the left pane - properties
  Change the e-mail address you like.

• Since the download of Firefox 4, I have problems of archiving of conversations from my gmail Inbox view. Also, when I go to enter a new event in google calendar, I have to now click the cursor in the box type of the event (it used to let me just start typ

  Since the download of Firefox 4, I have problems of archiving gmail conversations since my Inbox view (one or more conversations) as it says 'No. Conversations selected' when I selected one or more. Also, when I go to enter a new event in google calendar, I have to click the cursor in the field type of the event (it used to let me just start typing) or else he bends and begins to jump to the day view or another month. Does anyone know how to fix one of these?

  I had this problem; But while trying to solve another problem, I reset my preferences for Firefox and it fixed this problem as well. To reset the preferences, follow this link: http://support.mozilla.com/en-US/kb/Resetting%20preferences

• Calendar deletes the event data when upgrading to icloud

  Hey there,

  When I add an event to the calendar on my mac app I add details (time and title), but once the application updates to icloud details disappear and the default event is the title of 'New event' and the time of the default event. 09:00.

  I even tried to change preferences to only refresh every 15 minutes give me to add the event and then updated, but it still does not work.

  Maybe this will help.

  Calendar may not enter the new event.

  Calendar may not enter the new event (2)