Automatic button press

Hi everyone,
I have a "Flat sequence structure" as shown below.
on the second "frame" I have an "OK" button.
this OK button is triggering an event.
I want the button will be pressed once automaticly when the program enters to the second frame.
Do you have a nice solution?
I thought to change the event to "change value" and to make a property node
"value (signaling)" that getting value from text file. I think that my solution isn't elegant.
maybe you have a better solutions?
thank you very much

You still don't make a lot of sense. It would probably help to attach the actual VI instead of a highly truncated picture.
What is the mechanical action of the button?
Do you really need to press the button programmaictally or would it be sufficient to simply triger the same code parts as if somebody had pressed the button?
Why do you need the FOR loop?
LabVIEW Champion . Do more with less code and in less time .

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When Button Pressed: 3171265167539056707

I have a choice 3171265167539056707 listed under "When Button Pressed". What is that?

Yeah, I have seen these cases where "foreign keys" are left dangling in the App Builder.
When you delete a item, all computations based on that item are deleted
Similarly, when you delete a button, all after-submit components based on that button should be automatically deleted (or at least set to Unconditional).

Simulate "When button pressed" condition

I created a button a page (in region position).
When I go to the Edit page for the button, the Optional URL Redirect section says "No target".
I have a After Submit process on the page that has its "When button pressed" condition set to that button.
Now, before firing the process, I would like to popup a Javascript confirm box that checks some value on the page and if it is ok, it submits the page
So, I went to the URL redirect section on the button and changed the target to URL and specified the following URL
javascript:{if (document.getElementById('SOME_ELEMENT').value=='foo' || confirm('Are you sure?')) doSubmit('BUTTON_NAME');}
Now, what change do I need to make to the After Submit process to simulate the 'When Button Pressed' condition? Or would it automatically know that the submit was (indirectly, via the doSubmit) due to the button being pressed and accordingly fire?
Hope I explained this clearly.
Thanks

Actually, I didnt need to change anything in my After Submit process. I still had it execute with no conditions and a 'When Button Pressed' of BUTTON_NAME and it worked fine! I didnt need to use the REQUEST value anywhere.
Is this just a co-incidence, did I get lucky or is this the way things are supposed to work?
javascript:{if (document.getElementById('SOME_ELEMENT').value=='foo' || confirm('Are you sure?')) doSubmit('BUTTON_NAME');}
Or would it automatically know that the submit
was (indirectly, via the doSubmit) due to the
button being pressed and accordingly fire?The answer to my question above would seem to be "yes". Is that right?
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Excel Simulate Button Press

I have an excel file containing data and some macros. I'd like to use LabVIEW to automate the pressing of a command button which has a macro assigned to it. Is there a way to do this through the ActiveX properties and methods Excel exposes?
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Craig

Ok. I figured it out. I was asking the wrong question. I really just want to run a macro and it looks like there have been plenty of people on this forum that have asked the same thing.
Solutions:
1) LabVIEW 8.5 has some examples of calling macros (just search 'macro' in the example finder)
2) You can also use the "Run Macro VI" in the report generation toolkit
http://zone.ni.com/reference/en-XX/help/372120A-01/lvoffice/excel_run_macro/
I ended up using the example provided by NI to guide me. The Application instance has a method of "Run" which allows you to call a macro by its XLS file and name (e.g. myDoc.xls!Button_Click_1)
Thanks!
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Error -- No Such Trigger('when-button-pressed')

Hi,
I am getting the error ""No Such Trigger('when-button-pressed')"",
when I am executing the code EXECUTE_TRIGGER( 'WHEN-BUTTON-PRESSED' );
on some item(Key-Next-Item), although WHEN-BUTTON-PRESSED trigger exists.
What could be the problem ?. It worked till yesterday, giving error from today, I havent
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Thanks in Advance
Devender

Steve's tip is the only good solution for this case.
The problem in your case for example is:
Let's say you have a block-trigger, which fires after your execute-trigger.
Now a colleague of you, which don't know your code, create a WHEN-BUTTON-PRESSED on an item, then the new code is started and not the block-trigger-code.
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Change control values on button press

Hi, I've got a situation where I have several numeric controls where you can change different values. I also have several subVIs with control references (as described in this article: http://labviewwiki.org/Control_References) that takes in references to these numeric controls on the mainVI. These subVIs continously read the values in their own threads.
So whenever I change a value on any of the controls, the values does of course change in the subVIs, since they reference to the value of the control. How would I make the actual value only change only after I clicked the ok button?
To illustrate this I made a VI with an event structure and a separate while loop that continoulsy reads a reference to the control and updats an indicator. I can think of a few cumbersome solutions, whereas I have two controls for every value. The second control would then be hidden and only written to in case of the Ok button press. But having two controls to do something simple as this seems superfluous.
Message Edited by Siniz on 10-20-2009 10:36 AM
Solved!
Go to Solution.
Attachments:
ValueChangeOnButtonPress.vi ‏19 KB

Given what you want to do then I would suggest that you use an Action Engine to contain your data. This has the advantage of decoupling the UI from the subtasks. I would recommend that your action engine consist of an array of clusters. Each cluster would contain the data values, in your case Ki, Kd and Kp for each controller. This has the advantage of reducing the individual values you are dealing with and treats the data for a given controller as a whole. The subtasks could either poll the data looking for a value change. You could even keep track of that in your Action Engine so you would only need to poll to see if the data changed. If it did, then read the data. You would need an index or ID to specify which controller's data you would want to access. The action engine allows you to grow your application if more controllers are added. You should use a typedef to define the cluster. If you wanted to make this more event driven you could use a single notifier shared by your subtasks that would simply indicate a data change event. Part of the data for the notifier could specify which data. That way only interested subtasks would take action. This type of architecture wouldn't add lots of wires to your diagram especially if you used a named notifier.
Regardless of the way you choose to pass the data to the subtasks I would take a look at your UI. I haven't seen it so I can't comment on it specifically. However is you have 40 controls on the front panel at the same time it most likely is a confusing interface. There are ways to reduce the complexity and still provide the same functionality. If you haven't already looked at I would recommend getting the book The LabVIEW Style Book by Peter Blume. If you did reduce your UI to only work with a single controller or a couple of related controllers at a time the Action Engine approach would work nicely since you take your data from the FP and only update the data that has changed. From a UI perspective you have less controls to worry about on your UI and it will probably be easier for the user to understand. From the application's perspective you have decoupled the subtasks from the UI in a very clean way. Another approach would be to use LVOOP for your controller data and processing. Then you simply instantiate a new instance of the class (an object) for each controller that your system is using. This has an added benefit of allowing you to use different controllers and load them at runtime using dynamic dispatching.
PS You are good for the overall Kudo count. Thanks.
Message Edited by Mark Yedinak on 10-20-2009 12:33 PM
Mark Yedinak
"Does anyone know where the love of God goes when the waves turn the minutes to hours?"
Wreck of the Edmund Fitzgerald - Gordon Lightfoot

Calling a report from forms - FRM-40735 when-button-pressed raised unhandle

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obj := publicreportserviceclient.new(); DECLARE
param_name varchar2(200);
un varchar2(200);
pw varchar2(200);
out_file varchar2(200);
obj ORA_JAVA.JOBJECT;
BEGIN
obj := publicreportserviceclient.new();
param_name := 'EMP';
un := 'Administrator';
pw := 'Oracle123';
out_file := 'D:\DevSuiteHome_1\j2ee\home\default-web-app'||'output';
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pw,'pdf','New_Template',out_file);
web.show_document('http://jmenge-de.de.oracle.com:8889/j2ee/' || 'output');
exception
--check for ORA-105101
when ORA_JAVA.EXCEPTION_THROWN then
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           ParamNameValue[] paramNameValue = new ParamNameValue[1];
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                    ex.printStackTrace();
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If there is a way to make it work with Bi publisher, Please let me know.
I need to something to make it work with BI publisher.
thanks,
Edited by: Rooney on May 27, 2010 1:27 PM

How can I call my chart in Forms6i on When Button Press Trigger?

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Why am I getting this error? How do I add confirm message to button press?

Using Java Studio Creator.
I do not understand why I am getting the following page error:
Description: An unhandled exception occurred during the execution of the web application. Please review the following stack trace for more information regarding the error.
Exception Details: java.lang.IndexOutOfBoundsException
Index: 0, Size: 0
Possible Source of Error:
Class Name: java.util.ArrayList
File Name: ArrayList.java
Method Name: RangeCheck
Line Number: 546
======================================================================
I have a page that works.
It has a button that is created in the session bean code with the following java:
button = (HtmlCommandButton)application.createComponent(HtmlCommandButton.COMPONENT_TYPE);
button.setActionListener( application.createMethodBinding("#{ScheduleEditSessionBean.mainApply}", new Class[]{ActionEvent.class} ));
button.setId( "applyUndates" );
button.setType( "submit" );
button.setTitle( "Apply updates.");
button.setValue( "Apply" );
button.setStyle(style);
children.add(button);
When the button is pushed, it calls the following session bean method:
public void mainApply(ActionEvent actionEvent)
updateScheduleData();
scheduleAdjustFlag = 1;
dataApplied = true;
dataSaved = false;
addControls();
This all works just fine - no errors
====================================================================
I wanted to add confirmation to the button press, so I removed the action listener for this button and added
a javascript function call for the onclick method
button = (HtmlCommandButton)application.createComponent(HtmlCommandButton.COMPONENT_TYPE);
style = "text-align: center; font-family: 'Arial','Helvetica',sans-serif; " + font + " height: 22px; width: 115px";
// Commented out this line button.setActionListener( application.createMethodBinding("#{ScheduleEditSessionBean.mainApply}", new Class[]{ActionEvent.class} ));
button.setOnclick("confirmApply()"); // Added this line.
button.setId( "applyUndates" );
button.setType( "submit" );
button.setTitle( "Apply updates.");
button.setValue( "Apply" );
button.setStyle(style);
children.add(button);
I added a dummy button to the page that has the following call to execute the mainApply method in the sessioon bean.
The button action just calls the mainApply() method in the session bean
public String mainApplyBtn_action() {
seb.mainApply();
return null;
Added the javascript to the page that simply pushes the dummy button if confirmed.
function confirmApply()
if( confirm( 'Are you sure you want to Apply these changes?' ) )
form1["form1:mainApplyBtn"].click();
The session bean method looks like this it is the same method as before, but without the action event argument.
public void mainApply()
lsb.logMsg( "<ScheduleEditBean.mainApply> Main apply pushed" );
updateScheduleData();
scheduleAdjustFlag = 1;
dataApplied = true;
dataSaved = false;
addControls();
==================================================================================
Now, when I push the original 'Apply' button, I get the confirmation box just like I expected.
But when I confirm the question, I get the error at the top of this post.
If I push the 'dummy button' directly, I do not get the error.
I do not understand why I should be gettng this error.
Can anyone give me a clue as to why this change would cause the problem?
The error is related to an ArrayList.
I use several of these on the page, but they should be filled with data in the preRender method of the page.
Can anyone suggest a way that I can add confirmation to a button that is created under program control?
Thanks

Make use of the fact that when an onclick event of a button returns 'false', the action will not be taken.
Pseudocode:<h:commandButton value="submit" action="#{myBean.action}" onclick="return confirm('Are you sure?');" />

How to call a dynamic URL on 'button press' event, in MVC-based BSP

Hi,
My requirement is as below:
On selecting a row in table view, and pressing a button, I need to open a browser.
The Browser URL depends on the row selected.
The key field from table view, is added at the end of the URL string.
Shortly, I can say that, I am getting a value on row selection & want to pass it to button event.
In Views Section, there are 2 tags- (1)table view & (2)button.
Right now, I have put the code for getting the key field, in DO_HANDLE_DATA method.
In Button's OnClientClick method, I have called the Javascript to open the browser.
If I now write the code to concatenate the key field value to form the dynamic URL in 'OnClick' method,
it will be called only after the browser is opened.
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Thanks,
Nisha Vengal.

Hi Nisha,
The crux of your issue here is that you want to call the event triggered with onClick before calling the event triggered on onClientClick. This can be achieved by the following code in the function called on the onClientClick.
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Problem while hide a block on selection screen on button press

Hi,
I have added two buttons on the application toolbar of the selection screen. I have input fields under two blocks on the selection-screen. Initially the second block is hidden. If I press the button 1 the second block should be made visible.
For this to happen, I captured the button 1 click event using the following statement.
IF sscrfields-ucomm = 'FC01'.
Inside the if ... endif, I looped at the screen and made the second block visible. It was working fine.
loop at screen.
if screen-group4 = '013'.
     screen-invisible = 1.
     screen-active    = 0.
endif.
endloop.
Later the second button was added. Now when i run the report for the first time, if button 2 is clicked the hidden block appears on the selection screen even though i have not added any code for it.
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I saved a variant for the report.
During execution of the report, if i select any variant then the hidden block is displayed.
Can anyone please tell me how to fix this problem.
Regards,
T2.

Hi All,
The problem is solved.
Everyone was confusing between the pushbutton on the selectio-screen and on apllication toolbar
(where you have the execute icon).
Please find the code below. Thanks for you time and help. I appreciate it.
REPORT ztest.
INCLUDE <icon>.
* TABLES                                                              *
TABLES: t001,              " Company Codes
        lfa1,              " Vendor Master (General Section)
        sscrfields.        " Fields on selection screens
* To capture button press event.
DATA: gv_button_press       TYPE c.
* Menu Painter: Program interface for dynamic texts
DATA: gs_dyntxt             TYPE smp_dyntxt.
* SELECTION SCREEN                                                    *
SELECTION-SCREEN FUNCTION KEY 1.
SELECTION-SCREEN BEGIN OF BLOCK blk1 WITH FRAME TITLE text-s01.
* Company Code.
SELECTION-SCREEN BEGIN OF BLOCK ccode WITH FRAME TITLE text-s02.
SELECT-OPTIONS: s_bukrs FOR t001-bukrs OBLIGATORY MEMORY ID buk.
SELECTION-SCREEN END OF BLOCK ccode.
SELECTION-SCREEN END OF BLOCK blk1.
SELECTION-SCREEN BEGIN OF BLOCK dsel WITH FRAME TITLE text-s04.
* Vendor Master.
SELECTION-SCREEN BEGIN OF BLOCK vend WITH FRAME TITLE text-s07.
SELECT-OPTIONS: s_konzs FOR lfa1-konzs MODIF ID aw1.
SELECT-OPTIONS: s_txcd1 FOR lfa1-stcd1 MODIF ID aw1.
SELECT-OPTIONS: s_txcd2 FOR lfa1-stcd2 MODIF ID aw1.
SELECTION-SCREEN END OF BLOCK vend.
SELECTION-SCREEN END OF BLOCK dsel.
* INITIALIZATION                                                       *
INITIALIZATION.
* Populate the Application toolbar button attributes.
PERFORM populate_app_toolbar_buttons.
* Hide the dynamic screen intially.
PERFORM hide_screenfields.
* AT SELECTION SCREEN                                                  *
AT SELECTION-SCREEN.
* Capture the button press event.
PERFORM capture_button_press.
* AT SELECTION-SCREEN OUTPUT.                                          *
AT SELECTION-SCREEN OUTPUT.
* Show/Hide the dynamic selection screen based on button press.
PERFORM adapt_screen.
*& Form populate_app_toolbar_buttons                                 *
*   Display Icon on the application toolbar buttons. Also set the      *
*   function codes for these buttons.                                  *
FORM populate_app_toolbar_buttons.
CLEAR gs_dyntxt.
WRITE icon_fencing     TO gs_dyntxt-icon_id AS ICON.
MOVE text-b01         TO gs_dyntxt-quickinfo.   " Dynamic Selections
MOVE gs_dyntxt         TO sscrfields-functxt_01.
ENDFORM.                    " populate_app_toolbar_buttons
*& Form hide_screenfields                                            *
*   Initially hide the Dynamic selection screen.                       *
FORM hide_screenfields.
LOOP AT SCREEN.
    IF screen-group1 = 'AW1'.
      screen-invisible = '1'.
      screen-active    = '0'.
    ENDIF.
    MODIFY SCREEN.
ENDLOOP.
ENDFORM.                    " hide_screenfields
*& Form capture_button_press                                         *
*   Set the flag based on button press event. Appication bar button    *
*   tcode is available only at 'At Selection-screen' event.            *
*   Use the captured data at 'At Selection-screen Output' event.       *
*   Screen adjustments is possible only under this event.              *
FORM capture_button_press.
IF sscrfields-ucomm = 'FC01'.
    IF gv_button_press IS INITIAL.
      gv_button_press = 'X'.
    ELSEIF gv_button_press EQ 'X'.
      CLEAR gv_button_press.
    ENDIF.
ENDIF.
ENDFORM.                    " capture_button_press
*& Form adapt_screen                                                 *
*   Show/Hide the dynamic selection screen based on button press       *
*   captured at 'At selection-screen' event.                           *
FORM adapt_screen.
* If button press flag is initial hide the dynamic selection screen.
IF gv_button_press IS INITIAL.
    LOOP AT SCREEN.
      IF screen-group1 = 'AW1'.
        screen-invisible = '1'.
        screen-active    = '0'.
      ENDIF.
      MODIFY SCREEN.
    ENDLOOP.
* Elseif button press flag is 'X' show the dynamic selection screen.
ELSEIF gv_button_press EQ 'X'.
    LOOP AT SCREEN.
      IF screen-group1 = 'AW1'.
        screen-invisible = '0'.
        screen-active    = '1'.
      ENDIF.
      MODIFY SCREEN.
    ENDLOOP.
ENDIF.
ENDFORM.                    " adapt_screen
Regards,
T2
Message was edited by: Titu Joseph

Sending an object from client to server always on button press

What I need is to send an object from client to server but I need to make server wait until another object is sent. What I have is the JFrame where you put the wanted name and surname, then you create a User object with these details and on button press you send this object to the server. I just can't hold the connection because when I send the first object, server doesn't wait for another button click and throws EOFexception. Creating the while loop isn't helpfull as well because it keeps sending the same object again and again. The code is here
public class ClientFrame extends JFrame {
    private JButton btnSend;
    private JTextField txfName;
    private JTextField txfSurname;
    public ClientFrame() {
        this.setTitle(".. ");
        Container con = this.getContentPane();
        con.setLayout(new BorderLayout());
        txfName = new JTextField("name");
        txfSurname = new JTextField("surname");
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            @Override
            public void actionPerformed(ActionEvent e) {
                SSLSocketFactory f =
                        (SSLSocketFactory) SSLSocketFactory.getDefault();
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                            (SSLSocket) f.createSocket("localhost", 8888);
                    c.startHandshake();
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                    ObjectOutputStream oos = new ObjectOutputStream(os);
                    InputStream is = c.getInputStream();
                    ObjectInputStream ois = new ObjectInputStream(is);
                    boolean done = false;
                    while (!done) {
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                        User u = new User();
                        u.setFirstName(first);
                        u.setLastName(last);
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public class TestServer {
    public static void main(String[] args) {
        try {
            KeyStore ks = KeyStore.getInstance("JKS");
            ks.load(new FileInputStream(ksName), ksPass);
            KeyManagerFactory kmf =
                    KeyManagerFactory.getInstance("SunX509");
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            SSLServerSocketFactory ssf = sc.getServerSocketFactory();
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            printServerSocketInfo(s);
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            ObjectInputStream ois = new ObjectInputStream(is);
            OutputStream os = c.getOutputStream();
            ObjectOutputStream oos = new ObjectOutputStream(os);
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                String confirmString = "rcvdOK";
                String errorString = "ERROR";
                if (u != null) {
                    System.out.println(u.getFirstName() + " " + u.getLastName());
                    oos.writeObject(confirmString);
                } else if (u == null) {
                    oos.writeObject(errorString);
            is.close();
            s.close();
            c.close();
        } catch (Exception e) {
                System.err.println(e.toString());
}Thanks for any help, btw this doesnt need to be via ssl, the problem would be the same using only http. Please anyone help me:)
Edited by: Vencicek on 7.5.2012 2:19
Edited by: EJP on 7/05/2012 19:53
Edited by: Vencicek on 7.5.2012 3:36

Current code fails because it's sending still the same entity again(using while loop)No it's not. You are creating a new User object every time around the loop.
which makes the system freezeWhich means that you are executing network code in the event thread. Don't do that, use a separate thread. At the moment you're doing all that sending inside the constructor for ClientFrame which is an even worse idea: you can never get out of there to the rest of your client program. This is a program design problem, not a networking problem.
and doesn't allow me to set new parameters of the new entityI do not understand.
I need to find a way to keep Server running even when the client doesn't send any data and wait until the client doesnt press the send button again to read a new object.That's exactly what happens. readObject() blocks until data is received.

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