Structure of the event run only on first change of the value

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  This is my first Flash application, so please bear with me.
  
  In the example below, I have a number of files I load using Chargers.
  
  However, when I have more than one url wrong (missing file, bad domain,...) the IO_ERROR event fires only once. For all subsequent bad urls, the system does nothing and hangs just (when loading consecutively).
  
  One solution is to load all images silmultaneously, but I still want to know what is the problem.

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  http://tinyurl.com/5q87n3

• Why doesn't my event structure when the value of the Boolean indicator changes.

  Please see the code below

  Hi Nagaa,

  Here, it's in 2009. You can create an event for change of value indicators directly, you may use the property value signal node as in the attached vi.

  Hope this helps you. Any questions let us know.

• structure of the event does not record local vars

  I have a gif of a FPGA based topology I want to show some telesignalisations in.  As the user clicks on the Boolean, vertical lines appear and disappear as they click on it again, showing the current topology of closure.

  To save resources, I opted to use a structure of the event.  So far I put it for internal RX_FAC and RX_TERMXCO4AU you see at the top left of the image.

  A single loop of RX and one TX closure may be on at the time, so one of the first things that happens when the user clicks on the Boolean value is that it defines the values of all other Boolean in the same row of fake, thanks to the use of local variables.

  The problem is - the structure of the event runs only when the user actually clicks the Boolean true or false value, but not if the boolean is false through the use of a local var.  In other words, let's say I RX_TERMXCO4AU true and false RX_FAC.  If I click on RX_FAC to set it's true, then you will notice RX_TERMXCO4AU goes dark/false and RX_FAC lights.  So the value of RX_TERMXCO4AU has changed, but associated with the structure of the event RX_TERMXCO4AU does not run (that's why the vertical line between RX_TERMXCO4AU and TX_FACXCO4AU remains).

  This will make a lot more sense if you run the attached simple VI.  Right now, events exist for RX_FAC and RX_TERMXCO4AU, but it is sufficient to explain the problem I think.

  Any help is appreciated.

  The structure of the event is for events generated by users.  Writing to a local variable is a programmatic change.

  You want to do is write your value to the Value property (Signalling) of the Boolean that will change the value and raise the value change event.

• Why Event.ADDED run HGroup when you change the size of the element?

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  I was wondering why my listeners Event.ADDED/REMOVED run when I change the size of an element in a HGroup... I can't understand. Both are running.

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• Problem with the value of the checkbox and app.settings.getSetting)

  Hello everyone.

  I have a problem with is settings saved for checkbox.

  Saved settings does not apply on the value of the checkbox.

  It's strange, but it always 'true '.

  Here is piece of code:

  checkMe = 11;    //any value for the first time running
  
  
  if (app.settings.haveSetting("savea", "chck")) {                            
                        checkMe = app.settings.getSetting("savea", "chck");  // get saved value, else 11
                        alert("checkMe = "+checkMe)
                          }
                      if(checkMe == 11){
                          checkMe= false;   //if there is no saved settings, checkbox value will be false/ unchecked
                          alert("You run this script first time, so manual value will be 'false'")
                          }else{
                              checkMe = app.settings.getSetting("savea", "chck");     // if saved settings exist, get true or false
                          }
       alert("Yes, checkMe will = "+checkMe)        
      
      
  win.checkPanel.chkOne.value = checkMe;  /// checkbox value will equal saved checkMe
  
  var fff = win.checkPanel.chkOne.value;  // string for alert
   alert("aha! but checkbox value is  = " +fff+ "\n Why so?")     // here we`ve got always "true"
  
  
  
  
  win.checkPanel.chkOne.onClick  = function () {
          
      var path11 = win.checkPanel.chkOne.value;  //  checkbox value to variable
      app.settings.saveSetting("savea", "chck", path11);  //saving checkbox value
      alert("Saved this value - " + app.settings.getSetting("savea", "chck"))
            }
  
  

  win.checkPanel.chkOne.value is always true.

  Can anyone exmplain why and how to get rid of this static value?

  P.S. just in case, here's the complete code:

  function mainFun() 
  {
  
  
      this.windowRef = null;
  }
  
  
  
  
  mainFun.prototype.run = function()
  {
      
      /*----- UI -----*/
            var retval = true;
            var win = new Window("palette", "Check option", [150, 150, 460, 455]);
            this.windowRef = win;
  
  
      
            win.checkPanel = win.add("panel", [25, 150, 285, 265], "Checkbox");
            win.checkPanel.chkOne = win.checkPanel.add("checkbox", [10, 15, 125, 35], "Checkbox One");
            //win.checkPanel.chkTxtOne = win.checkPanel.add('edittext', [140, 15, 230, 35], '');
  
  
       win.quitBtn = win.add("button", [110,275,200,295], "Close");
  
  
  checkMe = 11;    //any value for the first time running
  
  
  if (app.settings.haveSetting("savea", "chck")) {                            
                        checkMe = app.settings.getSetting("savea", "chck");  // get saved value, else 11
                        alert("checkMe = "+checkMe)
                          }
                      if(checkMe == 11){
                          checkMe= false;   //if there is no saved settings, checkbox value will be false/ unchecked
                          alert("You run this script first time, so manual value will be 'false'")
                          }else{
                              checkMe = app.settings.getSetting("savea", "chck");     // if saved settings exist, get true or false
                          }
       alert("Yes, checkMe will = "+checkMe)        
      
      
  win.checkPanel.chkOne.value = checkMe;  /// checkbox value will equal saved checkMe
  
  var fff = win.checkPanel.chkOne.value;  // string for alert
   alert("aha! but checkbox value is  = " +fff+ "\n Why so?")     // here we`ve got always "true"
  
  
  
  
  win.checkPanel.chkOne.onClick  = function () {
          
      var path11 = win.checkPanel.chkOne.value;  //  checkbox value to variable
      app.settings.saveSetting("savea", "chck", path11);  //saving checkbox value
      alert("Saved this value - " + app.settings.getSetting("savea", "chck"))
            }
  
  
  
  
  
  
            win.quitBtn.onClick = function() { 
                win.close(); 
            }
  
  
      win.center();
            win.show();
  
  
            return retval;
    
  }
  
  
  if(typeof(mainFun_unitTest) == "undefined") {
      new mainFun().run();
  }
  
  

  A quick glance, I'd say it's because when the pref that is saved as a string, so after having read it you must control if (checkMe == 'true') rather than check it out as a Boolean value.

• the event structure cannot combine with other events and run only once

  Why it will always get stuck when I combined the 'new user add' event to the event of 'Login '?

  It works for me when I separate the two, but the 'Add a new user' button can work but only once for the structure above, program will be blocked on the second time that I press the button "add a new user".

  

  It has already been said, you must use that a single structure of the event and not 2. Also, avoid using local variables (better store data in a shift register and not in an indicator) how you do it, it can cause bad racing conditions.

  Actually here you just don't another data storage since you have a file. Don't store data file to the root of the C drive, you do not have write permission. Use the default data folder or the folder of the application.

  I have attached a simple example. I guess that's a work at home? Please make my account help: try to understand why your VI does not work and try to find a solution by yourself. Modify my sample and play with him. This is how you learn LabVIEW. If something is not clear, post here, and we can explain/help.

  Edit: has the 'connection' event, I don't check against whether the file exists or not. Difficulty of this part, gives too little practice.

• Structure of the event within the structure of the case run once

  Hi all

  I am a controller using myRIO and labview where the program compares a value of the probe in a "Preset" and then choose a structure case depending on what type of air supply is required. What can be seen on the picture, for example, is 0 if saturated air supply is necessary.

  The structure of the event is used to send a signal to step to the stepper motors to open the valves (closing is still pretty much in the same way). In any case, the event turns my valves 90 degrees. I read the sensor all a second, however, when the case remains unchanged, the case runs the event again causing my engines running at 90 degrees per second (essentially continuously). What I'm looking for is a way to send the signal to step only once until a new case is selected.

  He is not on the photo, but this is all within the large loop.

  Apologies for any bad/cringeworthy coding, it is literally my first program always using labview. I can post the full VI if you need.

  Any ideas would be very appreciated! Thank you

  Simos wrote:

  crossrulz you have a simple example by chance that uses the feedback node?

  See if that helps

  

• Structure of the event does not run

  Hello

  I have a Board who I am control with loop open using a stepper motor system.  I want to run some tests to measure to what extent and how constantly the motor can move the stage.  How my software works is that I give the engine a position (number of steps), then it runs until it reaches this position.

  The motor itself and then I want to set up a structure of event so that I can give different commands without having to restart the program each time.  The three cases, I want to implement are:
  (1) giving the engine a new job to run

  (2) telling the motor home again

  (3) stop the program at any time

  I watched tutorials on the structure of the event and cannot for the life of understand me why it won't work.  The motor houses himself, enters the while loop and just stays there.  When I change the values, nothing happens.  Can someone help me understand this?

  Riche29 wrote:

  Thank you for the answers.

  Would not has to do with the fact that I do run my software on a myRIO and not my PC, doesn't it?

  Yes, yes it would be.

  The myRIO is an on-Board Unit and has no video output, and therefore is not a concept of events based on user input.  I've never used a myRIO but I figured, would not allow even you put code on the myRIO if we used a structure of the event, but I guess you can have user events so maybe that's why no error was thrown.

  The code runs normally on Windows where I tested it.  I had to disable parts of the House and run the routine because I don't have the myDAQ or myRIO software installed but the structure of the event worked as expected.

  As for the change of Position value, the witness must be in case of structure, not only in the while loop.  If it isn't then you will read the last value not a new one.  You were probably just changes to test things because in the images you posted it was in the case of structure.

• How to import in the video editor of first elements 13 clips with the tag structure or the person, location and the structure of the event organizer?

  How to import in the video editor of first elements 13 clips with the tag structure or the person, location and the structure of the event organizer?

  senior50

  On what computer operating system is your first items 13 running? And you have updated 13 to 13.1 still using Help Menu/implementation of an open project? If this isn't the case, please consider this.

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  or

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  Have you been there and done that yet?

  Please examine, consider, give more details, and we can then decide what.

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• How to use the structures of the event for long-running tasks

  I created a state machine that scans a cluster of Boolean controls in a State of 'home '. Most of the States run a Subvi or two in ~ 100 ms or less.

  However, a State run for 10 seconds.

  The code works but the user interface is limited because the controls are outside the cluster because they provide inputs to the structure of State machine case but do not cause changes in the State. In other words, I all orders cluster stacked vertically on one side of the main panel and do not have the flexibility to move the controls to the more intuitive positions on the Panel.

  My question: How can I convert this code in a structure of the event and keep this long term 'event' and prevent that the operator by clicking another button event during the execution of this event?

  Thank you

  You say you have controls outside of your main code... You should really put these inside and manipulate them in a State of your state machine is initialized. This allows you to make changes to the code easier and limits of line entering your outside loop.

  You can do different things to lock the user.

  You can disable specific controls so that they can't be clicked or edited.

  You can use the palette of the mouse to define the busy cursor and disabled again once finished, I do this a lot during treatment when my code something loads the user just clicked.

  One of my favorites is to set a Boolean value in your data that passes through you event titled structure "disable mouse." When the value is True, a mouse down event will effectively reject the event, clicking on disable. I also added an event mouse move where if the bool disable the mouse is set to True, it moves an indicator of string with the mouse by telling the user why it is disabled.

  If you want more specific suggestions, I suggest to post an excerpt of your code, or attach your screws, so that we can better help you.

• While the loop within a box Structure runs only once a target FPGA

  I have a card OR cRIO-9012 RIO for the HIL system. I have a target FPGA file when I use a While loop within a while loop I use the box Structure to check a real condition inside I have the function of activation of the ports and selecting the analog and digital ports. But for my code the code runs only once on repeted times that we have in the LabVIEW environment.

  I also need help to optimize the code. I've seen people using While loop timed in the FPGA target I don't use in both cases.

  I've attached my FPGA with the Version of LV2012 file.

  Waiting for your comments.

  Thank you and best regards,

  Ganesha Moorthy

  You have while loops inside the structure to deal with a constant of false cable to the stop condition. These loops will obviously never stop so browse your outside while loop (containing the case structure) can never.

  This has nothing to do with the FPGA target, the same thing will happen in the development environment.

• Run only the first page load time

  All,
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• 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.

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  Hello

  I try to configure the time-out period in the structure of the 5s event using the loop, as shown in the picture as an attachment. The problem is that this time-out event occurred only when I code debugging and does not happen when I run the same without debugging. Any suggestions on this?

  Thank you!

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