Generate an event

Hi all,
I have a class that has a function that takes time to
perform.
This function reads data from a text file into an array.
I need to notify the caller when the data is actually read so
he may use another class member function to get them.
Please give me a general guideline on what should I use (I am
new to flash).

Sorry for not answering. I was away for a while.
I am using AS2, at least for now. Anyway I found out about
the EventDispatcher
class that did exactly what I wanted.

Similar Messages

How can I detect an external trigger and then generate an event or occurance

I have a PXIe-1065 chassis with a PXIe8030 controller, PXI-6653 timing module, PXI-6542 Digital IO, and PXI-6259 DAQ board, running LabView 8.5. I need to detect a trigger (100 ns TTL pulse) from an external device then start a process on a GPIB device. Is there a way for me to detect this trigger and then generate an event, or an occurance ? Can I do this without polling a device? Can any of this hardware generate an interrupt that LabView can detect?

My screenshot was only an example how you can approach the issue. I wasnt saying that you should try it with AI....
Just take a closer look into the DAQmx Events and you will discover something like this:
hope this helps,
NorbertMessage Edited by Norbert B on 10-05-2007 02:35 AM
CEO: What exactly is stopping us from doing this?
Expert: Geometry
Marketing Manager: Just ignore it.
Attachments:
DAQmxEvent.PNG ‏11 KB

Programatically change control focus to generate and Event......

I'm adding some user enhancement (anti-screw-it-up functions) to insure the desired process is executed.
Primary question: If I have an event that is handles by a value change in a text control, (event happens when you hit Enter or exit control with mouse) will the event also occur if you exit the control by programatically changing the focus to another control ?
I'm going to try and set up a temp vi 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 multiple event cases 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 moved into position and activates a prox sensor. At end of test, system waits for prox sensor to de-activate before resetting the system.
If a unit fails, there are rework options and the unit can be retested. When it fails, a label prints defining the failure modes and provides a failing serial number. When the unit is retested, the failing serial number is entered into a text control. I want the re-test sequence (queued up in the Event) to occur when either 1, a failing serial number is entered or two a button is pressed (with mouse) I'm pretty sure pressing a button would in turn automatically create the text control change event so my button can probably be a dummy button just for appearances.
Where the hole is if the user enters a failed serial # and doesn't exit the control and then engages a pump to start the test. I can use a 'Empty Path/String' function but the control will continue to show empty as if nothing was entered until the Enter key is pressed or the mouse is used to exit the control.
If I can generate the event by changing the focus, then it will insure that if a failing s/n is entered, the re-test sequence occurs and if nothing exists in that field, it performs a first time test.
A little long winded for sure but any thoughts are appreciated.
Can't really post any simple code as this feature is in my top level vi and I have a really big app that doesn't warrant uploading.
Doug
Doug
"My only wish is that I am capable of learning each and every day until my last breath."
Solved!
Go to Solution.

Actually, changing the focus alone did not trigger the event but I was able to then utilize the Empty Path/String function to drive a Value(Signaling) node for the control.
Doug
"My only wish is that I am capable of learning each and every day until my last breath."
Attachments:
Event_Structure_Trials.vi ‏29 KB

Generate an event programically

Greetings everyone!
I am trying to create a 'splash' screen that is displayed during httpconnection calls so that the user is informed of the status of the connection (ie connecting, posting, receiving etc). I created a form that implements the runnable method so that i can call httpconnection on a seperate thread. Once the run method is called i clear up all elements in the form, display a message and proceed with the http business.
The only problem is that the only way i found that i can move on to either a) the next form (if the data return is OK) or b) to the same form that made the call (if there is some error) is by inserting a command in the form after the connection is finalized, thus allowing the user to click his way out of the info screen.
I was wondering if there is some way for an event to be generated automatically once the connection is finalized, which could be treated by the commandlistener, thus allowing me to avoid any further user interaction.
thanks in advance!
best,
marcos

thanks for the help guys, i apologize if i did no make myself clear, but i think i can try out the call back method you guys suggested.
my problem was the following, i would:
1) generate an event that would call my connection thread
2) the main thread would then finish
3) the connection thread would get started
4) the form would be cleared up and a new message (ie connecting etc) would be appended
5) the connection thread would finish
i guess what i forgot to explain is that at this point i was hoping i could 'generate' an event so that i could call back my CommandHandler class (which implements commandlistener). i could probably change the code around in all my forms so that the result from the connection gets treated in the same thread that calls the connection. but by what i understood i could call commandlistener(command c, displayable d) directly, which would result in an event being generated and thus i could stick to my current logic whereby all events get treated in the main thread.
so the next step would be
6) i save the result of my connection
7) i call back my commandhandler
8) i treat the result of the connection and move on to the next Form by calling display.setDisplay...
is that correct or did i misinterpret your answer?
thanks again for the all the help guys, much appreciated!

Generate an event from another event

Hello,
What im trying to achieve is once a user presses the enter key in a Text Area, it generates another event which is 'pressing a button' without actually physically doing it.
private JButton btn = new jButton("Submit");
private void msg_taKeyReleased(java.awt.event.KeyEvent evt) {
    if(evt.getKeyCode() == KeyEvent.VK_ENTER){
       // generate event that clicks button without doing it physically
} Does anybody know how to do this?
Thanks

I would use key binding: [http://java.sun.com/docs/books/tutorial/uiswing/misc/keybinding.html]
Demo:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class KeyboardBindingExample {
public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable(){
            public void run() {
                new KeyboardBindingExample().launch();
    private Action click = new AbstractAction("Submit") {
        public void actionPerformed(ActionEvent evt) {
            System.out.println("click!");
    void launch() {
        JTextArea text = new JTextArea(20,60);
        JButton submit = new JButton(click);
        JPanel south = new JPanel();
        south.add(submit);
        InputMap im = text.getInputMap();
        ActionMap am = text.getActionMap();
        Object key = click.getValue(Action.NAME);
        im.put(KeyStroke.getKeyStroke("ENTER"), key);
        am.put(key, click);
        JFrame f = new JFrame("KeyboardBindingExample");
        Container cp = f.getContentPane();
        cp.add(new JScrollPane(text), BorderLayout.CENTER);
        cp.add(south, BorderLayout.SOUTH);
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.pack();
        f.setLocationRelativeTo(null);
        f.setVisible(true);
}

Generate an Event based on Counter Trigger

Hello,
I have the following part that is already working: a counter (used for period measurement) which is triggered by a digital input. After that I'm reading the data and I'm puting them in a Queue. Here I get an error. The Enqueue Element Vi is providing an error. (Error 1, something with a @ character that is illegal). I've notice that if I disable the trigger for the counter I don't get the error. I'm thinking that this is cause by the delay between the moment in which the Enqueue Block tries to enqueue and the moment in which the counter provides something to its ouptut.
What I want to do is to Generate an Event based on the Counter Trigger Signal and to put all the reading and Enqueue part in an Event Structure. I've tried to do that using an Export Signal - Property Node, but I didn't manage to make it work.
If you have any solution for this (with or without events - I just want to get rid of that error) please let me know.
PS: I have Labview 8.5.1 and the USB-6210.
Thanks,
LostInHelp

Hello Mike,
Thanks for your replay.
I've attached two vi files. In one you can find how I've tried to generate an event based on the counter trigger (test.vi).
The second one (test1.vi) is the vi where I get the queue error. I've deleted from the second vi the part where the data are dequeue and handled.
Thanks
LostInHelp
Attachments:
test41.vi ‏50 KB
test110.vi ‏35 KB

Generate dynamic event of producer loop in multiple consumer loop

I have one producer loop which used event case to interface with FP controls and 5 consumer loops
If I have to use the fifth consumer loop to generate dynamic event which send to event case in produer loop.
I have to wire register event with dynamic event terminal in producer loop . Also I need to wire user event to consumer loop (at the bottom of screen window) which is far away from producer loop. It is hard to wire them.
Is there any other method to let many consumer loop to communicate with one producer loop through dynamic event (the same user event)?

I like to use an Action Engine to hold control my Event Reference. Then anybody can send the event commands.
You may also want to look at the VIs I recently submitted for OpenG here.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines

Function modules to generate the event required

Hi guys,
I have created a workflow but its start event is not getting triggered though condition data is correct.
I want to debug and see when the Business object's event is called.
Can you please tell me name of the Function modules to generate the event. This way i'll put a breakpoint on those and check the flow ?
Regards,
Shaili

Thanks Surjith
I'll check this FM.
Also I want you advice on the real issue i'm facing.
I have created a workflow giving some condition with start event as CHANGED of BUS1006. Now the work of populating the field in condition is done automatically by a BADI i've created.
The issue is that the workflow is not triggerd during automatic population of teh field but is triggered when i explicitly populate the field.
The reason might be that CHANGED event of the business object used is triggered before the SAVE BADI has populated teh field. So CHANGED event 's condition is not satisfied before the BADI has finished updating.
Is there a way tackle this. Can I somehow push back the trigger of workflow...I'm new to workflows so please don't mind if this sounds foolish
Regards,
Shaili

Bonjour keeps generating error event 100. It's there 128 times in a week! What does it mean?

Bonjour keeps generating error event 100 in windows 8.1 event viewer. It's there 128 times in a week! What does it mean?

Hey Michael,
That error could be cause by a conflict with the firewall on your computer. Take a look at the articles below to go over some troubleshooting as well as verifying that Bonjour was properly installed on your computer.
iTunes for Windows: Bonjour alert due to firewall, security, or proxy software
http://support.apple.com/en-us/HT203392
How to tell if Bonjour for Windows successfully installed
http://support.apple.com/en-us/HT201776
Take care,
-Norm G.

Multiple "generate user event" in event loop

Hello.
1.) I am wondering if you can user a "generate user event" into an event loop to create a quasi-state machine.
For example create an event loop with the events "event a", "event b," "event c," and so on. The in "event a" put in a function to generate a user event to call "event b". Then "event b" will call "event c" and so on.
2.) If this is possible, then can u put multiple generate user events into a single event loop and have it queue the generate user events up. For example have the "event 1" case use the "generate user event" 3 times (generating "event 7" "event 8" and "event 9.") to call the next three future event cases in that order?
Thanks
Charlie C.

Of course it is possible, easiest with simply writing signaling properties. (See attached examples, LabVIEW 7.1).
You have to be very careful that you don't create trigger loops, e.g. event A triggers Event B, which triggers Event A ... ad infinitum! :0
Example "Multievents": event 1 triggers event 2, which triggers event 3.
Example Multievents2": event 1 triggers events 2-3-2-stop in sequence.
Message Edited by altenbach on 09-28-2005 01:26 PM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
MultiEvents.vi ‏57 KB
MultiEvents2.vi ‏72 KB

Generating LabVIEW events via ActiveX

I have a Labview 2010 Vi compiled to an EXE with ActiveX server enabled.
The VI has a single control that is a latched boolean control that is used in an Event Handler.
When I toggle this control, remotely, via an ActiveX client, the control changes state, but does not generate an event. (non-signaled).
I can understand this behavior if the control was not a latched control, but I would have thought that the latched control would automatically generate an event, since it doesn't make a distinction between "value" and "value (signaled)".
Other than monitoring/polling the control status and when it changes using a Value (Signal) local variable, is there a way to generate an Event, in a LabVIEW EXE, via ActiveX? Or is there another, more appropriate way to accomplish this. I'm trying to remotely run an program from another program through an activeX interface. I suppose if every control had a unique message and I had a message handler loop, then I could just use the ActiveX control to insert the appropriate message into the Queue, but this is an existing application and would take a fair effort to set that up.

What if you tried dynamically registering the event? You could create a reference to the boolean and use the Register for Events VI. Then, wire this event into the dynamic event terminal of the event structure (right click the border and say "Show Dynamic Event Terminals"). I don't have an ActiveX program to call into LabVIEW with, so I'm not sure if this will be any different than what you're doing now, but it's something easy to try. Perhaps you could post you ActiveX code and LabVIEW code or a modified version of both illustrating what you're mentioning?

Generate Key Events without pressing key???

Hi,
Is it possible to generate key events without pressing a key in swing???
i dont know if the question is logical or not, but just i want to generate some display as if the key is pressed by the user
Ashish

assuming c represents a text field.
This will type the character 'a' in the text field:
c.dispatchEvent( new KeyEvent (c, KeyEvent.KEY_TYPED, 0, 0, KeyEvent.VK_UNDEFINED, 'a') );
This will invoke Ctrl+F1, which will show the tool tip for the text field:
c.dispatchEvent( new KeyEvent (c, KeyEvent.KEY_PRESSED, 0, KeyEvent.CTRL_MASK, KeyEvent.VK_F1) );

Generating an event with ABAP Progrm

Kudos SDN:
Is there any way to generate an 'Event' using ABAP Progam.?
Thanks in advance,
Pidugu

>
Mark Barton wrote:
> yes - create a program which calls function module BP_EVENT_RAISE.
That function module is obsolete.Shouldnot be used in future.

Generate mouse events

Hi, hope to be clear enough so someone can help me.
After a couple of hours digging i cant find a way to make a java program to generate mouse events. I found the Robot class that has the method mousemove(x,y) but I dont need the pointer to be relocated at some position in the screen.
What i need is to translate some input (from jinput, already reading a book on that) to "real" mouse movements.
for example:
if you press key 1: the mouse should go 1 unit forward.
if you press key 2: the mouse should go 2 units forward.
and so on..
the Robot.mousemove(x,y) will magically make the pointer appear at x y in the screen. besides if I see that the pointer is at (10, 10) an I relocate it at (10,9) and repeat it several times the screen will end at (10,0)...
I would like to enable an other program that is expecting mouse movements to believe that the mouse moved forward, backward, etc... like if someone actually moved the mouse. NOTHING TO DO WITH the screen!
Hope someone knows how to do this.
cheers!

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How to remove an auto generated ActionPreformed Event from Netbeans?

Hi,
How do I remove an auto generated ActionPreformed Event from my code? I accidentally created one and want to remove it. I tried to right click on the event and refactor/delete all the dependencies in the source but it wouldn't let me remove it. There shouldn't be any DEPENDENCIES it was just created.
Thanks,
V$H3r

NetBeans | Help | Help Contents | Java Applications | Building Java GUIs | Designing Java GUIs | Managing Component Events | Removing Event Handlers:
1. In the Inspector window, select the component whose event handler you want to remove.
2. Click the Events button at the top of the Properties window.
3. Select the event in the property sheet and click the ellipsis (...) button to display the Handlers dialog box. Alternately, you can simply delete the name of the handler you want to remove in the Properties window.
4. In the Handlers dialog box, select the handler to remove from the list and click Remove.
When you remove an event handler, the corresponding code block is also deleted. If more than one handler uses the same name and same block of code, deleting a single reference to the code does not delete the code itself. Only deleting all references will delete the corresponding code block, and a confirmation dialog box is displayed first.

Silenty change combobox contents without generating an event

How do I do the following code without generating an item selected event?
        employeeModel.removeAllElements();
        for (Employee employee : employeeList) {
            employeeModel.addElement(employee); // FIXME generates event at index 0
        }

you change the combo's model
here's a simple demo - click the button to change the model
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
class Testing extends JFrame
String[] numbers = {"1","2","3"};
String[] letters = {"a","b","c"};
JComboBox cbo = new JComboBox(numbers);
public Testing()
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    setSize(400,100);
    setLocation(400,300);
    JButton btn = new JButton("OK");
    JPanel panel =new JPanel();
    panel.add(cbo);
    panel.add(btn);
    getContentPane().add(panel);
    pack();
    cbo.addItemListener(new ItemListener(){
      public void itemStateChanged(ItemEvent ie){
        if(ie.getStateChange() == ItemEvent.SELECTED){
          System.out.println(cbo.getSelectedIndex());}}});
    btn.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent ae){
        //cbo.removeAllItems(); //these two lines generate item event
        //for(int x = 0; x < letters.length; x++) cbo.addItem(letters[x]);
        cbo.setModel(new DefaultComboBoxModel(letters));}});//this doesn't
public static void main(String[] args){new Testing().setVisible(true);}
}

Generate an event

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