How to declare a global variable

Similar Questions

• How to create a Global Variable through the Project Explorer

  Hello world!

  I know how to create a global variable (in a vi through the range of functions...).

  but I'm missing a way to create one via the Project Explorer.

  It's a missing feature or just this documentation (and the intuition of myself) are missing?

  It would be very convenient.

  THX for your time and hope that answers.

  jwscs

  Right click on my computer > new > new... > select Global Variable.

  EDIT: although I agree with Gerd (he probably wondering why you need so we can recommend a better way ), I rarely use them in easy to write once - read many applications such as security levels overall program at initialization (VER) to read later, but NOT modified.  I know it would be better to make a good class, functional Global Variable (FGV) or a motor Action (AE) but globals ARE practical and safe IF used wisely.

• How to declare a global xml element in as2?

  How to declare a global xml element in as2?

  _Global.XML = new XML();

• Declaring a global variable

  Hi all
  
  
  -I need to declare a global variable to be used by different packages.
  
  -The variable is not assigned a constant value, but the values returned using the function.
  
  example:
  
  CREATE or REPLACE PACKAGE xyz
  IS
  
  v_xyz NUMBER: = function_get_value();
  
  END;
  
  
  Now, I need to use it in other packages. Can is it possible to specification we have function to assign the value of a variable.
  
  -Please suggest?

  You must use a block of initialization package:

  SQL> CREATE OR REPLACE
    2    PACKAGE xyz
    3      IS
    4        FUNCTION function_get_value
    5          RETURN NUMBER;
    6          v_xyz NUMBER;
    7  END;
    8  / 
  
  Package created.
  
  SQL> CREATE OR REPLACE
    2    PACKAGE BODY xyz
    3      IS
    4        FUNCTION function_get_value
    5          RETURN NUMBER
    6          IS
    7          BEGIN
    8              RETURN DBMS_RANDOM.VALUE;
    9       END;
   10       BEGIN
   11           v_xyz := function_get_value;
   12  END;
   13  / 
  
  Package body created.
  

  Now keep in mind, initialization packet block is called once only to the package of instantiation, so XYZ package global variable. V_XYZ value will not change throughout the session (until the next instantiation of package in the session to be precise):

  SQL> SET SERVEROUTPUT ON
  SQL> EXEC DBMS_OUTPUT.PUT_LINE(XYZ.V_XYZ);
  .06647500321795706139255917869240018349
  
  PL/SQL procedure successfully completed.
  
  SQL> EXEC DBMS_OUTPUT.PUT_LINE(XYZ.V_XYZ);
  .06647500321795706139255917869240018349
  
  PL/SQL procedure successfully completed.
  
  SQL> EXEC DBMS_OUTPUT.PUT_LINE(XYZ.V_XYZ);
  .06647500321795706139255917869240018349
  
  PL/SQL procedure successfully completed.
  
  SQL> 
  

  SY.

• How to access a global variable that is common between the different baskets project library

  My project consist of several libraries, after generation the library project packed for each library, I find it cannot share data in a global variable between different packaged project library file. For example: packed project library #1 contains VI variables global wirte 'position' and give it a value '400 '. Library #2 present another VI project try to read this global variable, but he gave reading of is NULL not "400". Why has this happened? Is it possible to solve, welcome any help, I wll appreciate for this!

  If you understand what is happening here...

  When you build a PPL, it takes in the .lvlib and also all the dependencies of the .lvlib.

  In your case, when you generate the Test Task.lvlib in a .lvlibp, she also pulls on a copy of the DataProcess.lvlib:GlobalsVariable.vi because it's addictive to read GlobalVar.vi.

  When your application runs, you end up with two copies of GlobalsVariable.vi in memory:

  DataProcess.lvlibp:GlobalsVariable.vi

  AND

  Test Task.lvlibp:: GlobalsVariable.vi (I don't know how PPLs namespace dependencies... If there is still the DataProcess.lvlibp)

  Because they are different screws (i.e. in a different namespace), they have their own memory and that's why you can't access the data.

  Your Test Task.lvlibp calls the version of GlobalsVariable.vi, he pulled the dependencies.

  To solve this problem - you must ensure that Task.lvlibp of Test calls the version of GlobalsVariable.vi of the DataProcess.lvlibp - you'll need to replace all instances with the version of the PPL. Of course, if you run DataProcess in the development environment, then it will always be bad namespaced, hence the suggestion to put your global variable VI in is own PPL that you then use in the process of data and Test tasks.

• How to create a global variable?

  I want to create a global variable start button to control programs in the structure of the sequence. But I do not know how to creat it. Thanks for responding.

  
  

• How to associate existing global variables

  It's probably something stupid that I'm missing.

  I created a global variable and there is a string.  I put it in a file called XML_Global.vi I then proceeded to make an another global var and would assign to the same variable.  However, the IDE shows me an another façade Globals 4.  How can I associate the existing façade of XML_Global.vi with the global variable I PLOPPED down there?  I looked everywhere on how to proceed in the properties and others, but couldn't find it.

  Have you read through this document?

  http://zone.NI.com/reference/en-XX/help/371361F-01/lvhowto/creating_global_variables/

  There may be some confusion about what is happening... When I add a global variable for the rough process, I followed the block diagram is:

  • Open the front panel to the global variable
  • Add FP (there may be several elements in a global variable VI)
  • Save the global variable VI
  • Then drag + drop of my project on a diagram VI
  • Select the variable I want by double clicking on the overall and will select an element > name Variable

  If this clears it for you? Looks like you try to simply place another instance of global variable in the palette of functions and then select the variable to assign this instance to (similar to what you would do with a local variable)? With globals, a new instance of a global VI is created when you drop the global BD... you want to place the world you have edited/saved (drag + drop of project or use the "Select" VI in the range of functions).

  I hope this helps...

• How to use the global variable in the table target?

  Hello

  I am trying to load several files into a single interface. the data is loaded successfully. 92. the files are there. for this I used variables and package.

  My requrement is 92 files of data loaded into the target table. I want to know what data from file.

  to this I added a column (filename) to the existing target table.

  If I used joints (not same condition), its totally wrong. all file names are coming.

  Please see the following screenshots.

  

  exit; target table.

  

  in fact in the target table. first 10 lines are coming from file.i.e first _ACCOUNT_LIMIT_511.TXT. but all the files names are coming.

  I'm confuse. After the first data file inserted then insert second data file. in that all file names are coming. Please help me.

  I thought that the global variable is preferable to identify the data came from which file.

  to do this, the global variable is used in the target table. I don't always have my exit.

  Please help me.

  Thanks in advance.

  

  Hello

  You can use the same way, how you use the project variable, just you have to do a thin is #GLOBAL.variable_name for example: #GLOBAL. SMART_AL_FILE_NAME_S

  Note: Make sure you that while you use one variable overall in interface, indicator should be staged as you chose above the screen

  hope this helps you

  Kind regards

  Phanikanth

• How to pass the global variable...

  Hello
  
  I have a report in a page and form in another page...
  
  If I clicked on the icon change in the report page it navigates to the form in another page...
  
  In this im report have "bill_amount" as one of the column, if I clicked on the icon change report page means, it will go to the form in another page...
  
  This form consist of one text field which is "bill_amount"...
  
  Since the report that I bill_amount for each entry, if I clicked on the icon change the means of the respective row, it does not appear automatically the respective bill_amount in the text in the form field...
  
  I created a report separately on the sql_query table... I created a form with a single field 'bill_amount '...
  
  Given that I na not create a report and a form based on the table... If I have created as it means if I clicked on the icon change it will show the datas respective in the form... since I created a report and form separately...
  
  If it is possible to create a global variable... who will bring the value of the "invoice amount" in the relationship and you will go the respective value in the form field on the next page...
  
  I don't want to put the value in the form field by restricting by request... She must take through the global variable...
  
  How can I reach it...
  
  It is urgent...
  
  concerning
  Mini

  Hello

  In her edit link column u give, the respective form field name, and the name of the column in the report inside...

  So that the value in the report of the corresponding column will be inserted into the corresponding field in the form...

  (IE) like this

  > p1_item_name---> #corresponding report name column #.

  Concerning
  GTA...

• How to get the global variable for an instanceId

  Hello
  
  I have data in global variables of an instance level. And using that instanceId, how can I get the global-level variables data.
  
  Please me tips
  
  
  Thank you
  Sailendra

  Hello
  I guess you want to get the value of the external variable within the process. You can do like this:

  assuming that it is of type string. For other types of type cast properly...
  String extVarValue = (String) (New Component(instance: this)).get(attribute: extVarName);

  Replace "extVarName" with your project name. It returns the value of your project for the instance that you are currently working.

  -Thank you,
  Malar.

• How to change a global variable in a function?

  Hello

  I want to change a globalvariable in a function, as a first step I made in this way:

  class Global_output_class
  
  GlobalDim("Correlation_Status,fail_part,End_Exp")
  dim pouet
  
  Correlation_Status = 12
  Call Correlation()
  pouet = Correlation_Status
  
  Function Correlation()
    Dim Global_output_class_sub
    Set Global_output_class_sub = new Global_output_class
  
    Correlation_Status = 1
    fail_part = 2
    End_Exp = 3
  
    Global_output_class_sub.CorrelationStatus = Correlation_Status
    Global_output_class_sub.failpart = fail_part
    Global_output_class_sub.EndExp = End_Exp
    set Correlation = Global_output_class_sub
  End function
  

  In this case: correlation_status receives a value of 12, then I go to my correlationn() function where it became 1

  Then he comes out of the Sub-function and takes the previous value of the program (12) (I hate that)

  To solve the problem I did it this way:

  class Global_output_class
  public CorrelationStatus
  public failpart
  public EndExp
  end class 
  
  GlobalDim("Correlation_Status,fail_part,End_Exp")
  
  Correlation_Status = 12
  Set Global_Output = Correlation()
  Correlation_Status = Global_Output.CorrelationStatus
  fail_part = Global_Output.failpart
  End_Exp = Global_Output.EndExp
  pouet = Correlation_Status
  
  Function Correlation()
    Dim Global_output_class_sub
    Set Global_output_class_sub = new Global_output_class
  
    Correlation_Status = 1
    fail_part = 2
    End_Exp = 3
  
    Global_output_class_sub.CorrelationStatus = Correlation_Status
    Global_output_class_sub.failpart = fail_part
    Global_output_class_sub.EndExp = End_Exp
    set Correlation = Global_output_class_sub
  End function
  

  This way my global value are copied in themselves after leaving the subprogramme

  I had a lot of variables, is there an easier way for the global variable in a function of change keep the value after you leave the service?

  Thanks for the help,

  Fred

  Hi Fred,.

  It is possible to use a global variable defined, but the best way is to use a function call (or procedure call) with parameters. Please first find the right solution for a function call with parameter and the suboptimal way with a comprehensive valiable:

  dim oParameter
  set oParameter = new cGlobal_output_class
  
  oParameter.Correlation_Status = 12
  
  msgbox "Correlation_Status before Call Correlation: " & oParameter.Correlation_Status
  Call Correlation(oParameter)
  msgbox "Correlation_Status after Call Correlation: " & oParameter.Correlation_Status
  
  '-------------------------------------------------------------------------------
  Function Correlation(oPara)
    msgbox "Correlation_Status in the FUNCTION before change: " & oPara.Correlation_Status
    oPara.Correlation_Status = 1
    oPara.fail_part = 2
    oPara.End_Exp = 3
    msgbox "Correlation_Status in the FUNCTION after change: " & oPara.Correlation_Status
  End function
  
  '-------------------------------------------------------------------------------
  class cGlobal_output_class
    dim Correlation_Status,fail_part,End_Exp
  end class
  

  call GlobalDim("oPouet")
  
  dim oPouet
  set oPouet = new cGlobal_output_class
  
  oPouet.Correlation_Status = 12
  
  msgbox "Correlation_Status before Call Correlation: " & oPouet.Correlation_Status
  Call Correlation()
  msgbox "Correlation_Status before Call Correlation: " & oPouet.Correlation_Status
  
  '-------------------------------------------------------------------------------
  Function Correlation()
    msgbox "Correlation_Status in the FUNCTION before change: " & oPouet.Correlation_Status
    oPouet.Correlation_Status = 1
    oPouet.fail_part = 2
    oPouet.End_Exp = 3
    msgbox "Correlation_Status in the FUNCTION after change: " & oPouet.Correlation_Status
  End function
  
  '-------------------------------------------------------------------------------
  class cGlobal_output_class
    dim Correlation_Status,fail_part,End_Exp
  end class
  

  Greetings

  Walter

• How to change a global variable of b form to form.

  Oracle forms builder 10.1.2.0.2 version
  version 10.1.2.0.2, Oracle database
  
  I try to pass a global variable of the form b to form one; I have an error frm-40815
  does not define a global variable in a form file.
  without doubt, I missed something. could you tell me what I missed?
  
  Here is my sample code;

  form a
  in when new forms instance trigger;
  :myblock.getvalue := :global.p_ck;
  .....
  
  forms b
  in when button pressed;
  call_form('a');
  :global.p_ck := :myblock2.checked;

  I assume that null value passed.
  you have an idea?

  If this previous error is resolved means that now form works well. Now, if there is then no value. So I think that the domain that you assign is not having any value for the test, you can use like this...

  :global.p_ck := NVL(:myblock2.checked,'Blank');
  call_form('a');
  

  -Clément

• How to link a global variable?

  Hello

  I tried to bind a variable with the new FlexGlobals.topLevelApplication but without success. Is there another way?

  Thanks in advance

  Add Metatag that can be bound to the class

  package
  {
  [Bindable]
  public class Test
  {

• declare global variables

  Hello
  I'm doing what is said here: [http://www.tek-tips.com/viewthread.cfm?qid=200545 & page = 13]
  And at the end of the day, it is said that "declare any global variables before running the form."
  My question is where and how can I declare these variables? When I tried to run the form, in the status bar, I
  FRM-40815: GLOBAL Variable. There is no such thing as a FLAG.
  
  Please help me.
  Thank you!

  Hello rage.

  before reading the value of a global variable, you'll first need to initialize.

  to make your first form, type *: GLOBAL. Variable: = initial value; *

  Kind regards

  Manu.

• How to make a USB-TC01 temperature data a global variable?

  Hi all!  I have a simple question (probably).  I bought the box USB-TC01 and with the software came a VI called LabVIEWTempLogger.  This VI reads a thermocouple voltage and internal conversions using DAQmx and a CYC edge to give a reading of simple temperature.  My problem is that I want to use this temperature in an another VI, then I want to make a global variable of temperature of LabVIEWTempLogger.  How to set a global variable such as temperature of LabVIEWTempLogger?  Thank you!

  You must get out of the recorder temperature VI the DAQ Assistant. Put it in a Subvi if you wish.

  Your main VI has some problems. The first fact a comparison is equal to the current temperature. Never make an equal comparison on a floating point number. Use in the range and force.

  The local 'Set Temp deg C' should be replaced by a wire from the Terminal. All local variables should be replaced by a wire. You can easily have the cable terminals from outside the main loop.

  Can't the difference in code in the States True and False when you read voltage.

  Don't use VISA bytes to the Serial Port. It's just bad style. You programmed it for a terminal character LF to get rid of fixed forward and set the number of bytes to read at a high number. Playback will wait until the stop character is detected and then automatically end.

  Finally, you have already created a world so I do not understand your questions about it.