Is it possible to call a function with the same name from 2 different dll's at the same time.

I'm trying to call a function ( F ) form 2 different libraries ( A.dll and B.dll ) at the same time. The first lib loaded determines the function F. A->F and B->F have same interface and name but different implementation.

Hi,
I tried it with two dll's, both with the same interface, and at the same
time, in the same VI. The popups even appear at the same time.
But now I understand the problem... Both dll's are created by LabVIEW! If
they are not (or one is not, and the other is), this is no problem.
And VI's in memory cannot have the same name. LabVIEW doesn't care if VI's
are in a dll or not.
This might not help, but if you want to make some sort of "plug in" system,
you might consider using llb's. By loading VI's dynamically, you can select
the path from which they are loaded. You must unload (close all references)
one before the loading the other, or the same problem will occur. If you go
this way, I consider a different approach. Make on
e library (or even a dll)
that has the interface you like, this is the "loader". Now make several
"plug in"'s, with the same interfaces. The name of each function in a plug
in is a concatenation of the library name and the function name. The loader
has one extra function, that loads (and unloads, when done) references to
all desired libraries to use (the names of the functions can be figured out
easily). All that the loader functions do is dynamically call the library
functions. You can use a call by reference node for this (you can use the
connector pane or the loader vi, since the interface must be the same!).
If you go this way, I guess the loader library can be converted to a dll...
Hope this helps.
Wiebe.
"rsam" wrote in message
news:[email protected]..
> Thx Wiebe,
>
> did you load both dll at the same time? For example in 1 vi. Somehow
> the first loaded function keeps to overrule the second. Notice that
> the interface is
exactly the same.
>
> I loaded 2 dll created in Labview with results described above.
>
> Regards Ruud

Similar Messages

Concatenate tables with same name from different servers - CR2013

Hello,
I need some help. I need data from 2 tables with the same name on different SQL servers thru an ODBC connection. When I try to get the data by adding both to my datasource I get data from one or the other. I have considered creating a view, but not sure how to handle this. Thanks.

Hi,
Linked Servers are pretty simple and straightforward, just do a search for the procedure.
I do have an additional comment, though. Depending on what tables you're gathering, I've found noticeable differences in performance when I use a connector to a DB on Server Instance "A" linked to "B" versus Server Instance B linked to A. I haven't determined the circumstances affecting one over the other.
If I'm not happy with speed using a connector A, I try switching to B. I like to use as much SQL code as possible, but you can't get around the connector still being a factor.
Matt

Is it possible to call a function in a parent component from a child component in Flex 3?

This is probably a very basic question but have been wondering this for a while.
I need to call a function located in a parent component and make the call from its child component in Flex 3. Is there a way to access functions in a parent component from the child component? I know I can dispatch an event in the child and add a listener in the parent to call the function, but just wanted to know if could also directly call a parent function from a child (similar to how you can call a function in the main mxml file using Application.application). Thanks

There are no performance issues, but it is ok if you are using the child component in only one class. Suppose if you want to use the same component as a child to some bunch of parents then i would do like the following
public interface IParentImplementation{
     function callParentMethod();
and the parent class should implement this 'IParentImplementation'
usually like the following line
public class parentClass extends Canvas implements IParentImplementation{
          public function callParentMethod():void{
     //code
in the child you should do something like this.
(this.parent as IParentImplementation).callParentMethod();
Here using the Interfaces, we re decoupling the parent and the child
If this post answers your question or helps, please mark it as such.

Call a method with complex data type from a DLL file

Hi,
I have a win32 API with a dll file, and I am trying to call some methods from it in the labview. To do this, I used the import library wizard, and everything is working as expected. The only problem which I have is with a method with complex data type as return type (a vector). According to this link, import library wizard can not import methods with complex data type.
The name of this method is this: const std::vector< BlackfinInterfaces::Count > Counts ()
where Count is a structure defined as below:
struct Count
Count() : countTime(0) {}
std::vector<unsigned long> countLines;
time_t countTime;
It seems that I should manually use the Call Library Function Node. How can I configure parameters for the above method?

You cannot configure Call Library Function Node to call this function. LabVIEW has no way to pass a C++ class such as vector to a DLL.

How do I call methods with the same name from different classes

I have a user class which needs to make calls to methods with the same name but to ojects of a different type.
My User class will create an object of type MyDAO or of type RemoteDAO.
The RemoteDAO class is simply a wrapper class around a MyDAO object type to allow a MyDAO object to be accessed remotely. Note the interface MyInterface which MyDAO must implement cannot throw RemoteExceptions.
Problem is I have ended up with 2 identical User classes which only differ in the type of object they make calls to, method names and functionality are identical.
Is there any way I can get around this problem?
Thanks ... J
My classes are defined as followes
interface MyInterface{
     //Does not and CANNOT declare to throw any exceptions
    public String sayHello();
class MyDAO implements MyInterface{
   public String sayHello(){
          return ("Hello from DAO");
interface RemoteDAO extends java.rmi.Remote{
     public String sayHello() throws java.rmi.RemoteException;
class RemoteDAOImpl extends UnicastRemoteObject implements RemoteDAO{
     MyDAO dao = new MyDAO();
    public String sayHello() throws java.rmi.RemoteException{
          return dao.sayHello();
class User{
   //MyDAO dao = new MyDAO();
   //OR
   RemoteDAO dao = new RemoteDAO();
   public void callDAO(){
          try{
          System.out.println( dao.sayHello() );
          catch( Exception e ){
}

>
That's only a good idea if the semantics of sayHello
as defined in MyInterface suggest that a
RemoteException could occur. If not, then you're
designing the interface to suit the way the
implementing classes will be written, which smells.
:-)But in practice you can't make a call which can be handled either remotely or locally without, at some point, dealing with the RemoteException.
Therefore either RemoteException must be part of the interface or (an this is probably more satisfactory) you don't use the remote interface directly, but MyInterface is implemented by a wrapper class which deals with the exception.

Batch processing: save processed file with same name to different location without moving the original

Hi, I would like to denoise Voice Over files with help of Auditions Batch Process. However, I have to save the files with the same name as the original, so that I can simply relink them in Premiere. Since I do want to keep the originals, I would like to save the processed files to a different location.
Unfortunately, Batch Processor adds " Copy" to the processed files and moves the originals along with the processed files to the new folder (causing Premiere to loose the original files).
Can I achieve my goal with Batch Processor, and how would I have to configure it?
Kind regards,
Andreas

Which version of Audition are you using? The latest ones allow you to specify where the batched files are saved and also if any Prefix or Postfix are added to the file name. These are all under Export Settings in the Batch Process pane. However you must have the Export box ticked to give you access to the settings.

How to create directories with same name in different schemas

I have two schemas on the same database.
I am trying to create directories with same name, but different paths in both the schemas.
When i created the directories in second schema, the directory paths of the first schema are automatically changed to the second path.
Is there any solution to create directories with same name, but different path in two different schemas on the same database.
Thanks,
Sridhar.

Hi,
>>When i created the directories in second schema, the directory paths of the first schema are automatically changed to the second path.
If you have removed the REPLACE clause of your create statement, then you would see that is not possible.
SYSTEM> connect scott/tiger
Connected.
SCOTT> create directory mydir as '/tmp';
Directory created.
SCOTT> connect legatti/pwd
Connected.
LEGATTI> create directory mydir as '/tmp';
create directory mydir as '/tmp'
ERROR at line 1:
ORA-00955: name is already used by an existing object
LEGATTI> select owner,object_name,object_type,created
2 from dba_objects where object_name='MYDIR';
OWNER OBJECT_NAME OBJECT_TYPE CREATED
SYS MYDIR DIRECTORY 19/12/2007Cheers
Legatti

Calling a function with eval causing CS5 to crash

I'm calling a function depending on user input from a dialog and the resulting call is something like:
eval(fromFormat + "To" + toFormat + "(selection, data)");
where selection is the app.selection.
The correct function is called, and I can trace through it all the way through to the end of the called function, and control has returned to the next line after the eval... and this is where it crashes. Even something simple like: var a = 1; causes CS5 to exit.
When it exits, CS5 closes, with an OK dialog box coming up stating: "An unhandled win32 exception occurred in InDesign.exe [6036]. ..."
Not pretty huh?
So I'm wondering what could be the cause? The called function does some shifting, and moving around of things, but nothing that I'd have thought would cause an exception.

I'm confused.
Is it eval() or remove() which is causing the crash?
If it's remove(), you can try separating the reference to the text from the hyperlink.
Maybe something like this:
var source = doc.hyperlinks[i].source;
source.remove();
or possibly, getElements() might be needed:
var source = doc.hyperlinks[i].source.getElements()[0];
source.remove();
Harbs

How to call a function with pl/sql

How does one call a function with pl/sql that uses a function?

Hi,
How does one call a function with pl/sql that uses a
function?I'm not sure what you mean.
In PL/SQL function can be used just about anywhere where an expression (with the same data type that the function returns). Arpit gave a very common example.
Here's another example, where all the functions take a single NUMBER argument and return a NUMBER, so they can all be used in places where NUMBERs are used:
IF fun_a (fun_b (0)) < fun_c (1)
THEN
    UPDATE table_x
    SET     column_y = fun_d (2)
    WHERE   column_z = fun_e (ROUND ((fun_f (3), fun_g (4)));You call a function simply by using its name, followed by its argument list, if any.
If the function is in a package, you must call it with the package name, like "pk_foo.bar (1, 2, 3)", unless the call comes from within the same package.
If the function is owned by someone else, you must give the owner name, like "scott.bar (SYSDATE)" or "scott.pk_foo.bar (1, 2, 3)". You can create synonyms to avoid having to name the owner.

Call outside function with same name in a package

I created a function as follows:
create or replace function f1 return number
is
begin
return 1;
end;
This f1 is to be called in a package created below.
Then I create a package with a function in it, as follows:
create or replace package pack1 as
function f1 return number;
end;
Now I define the package body as follows:
create or replace package body pack1 as
function f1 return number as
-- I am trying to call the first function f1 defined above here
How do I resolve the name issues here?
In other words, I want to call a function with the same signature outside a package.
Thanks for your kind help.

Hi,
Welcome to the forum!
Do you have a good reason for using the same name?
Refer to the stand-alone function with the owner name, even though it's your current schema.
That is, even if the package and the stand-alone function are owned by scott, in the package, say
x := scott.f1;

Call a function with tables in a FORM

Hi all,
I am currently willing to create a FORM that would call a function (which has a table in its parameters).
In the form, I modify the fields of this table, and then I call the function.
I put the table in the FORM parameters (either 'USING' or 'TABLES').
Problem is: the syntax check keeps on telling me that my internal table is not correctly defined (missing the statement 'OCCURS 0') and won't compile.
I tried to add this statement 'OCCURS 0', even 'WITH HEADER LINE', but I cannot make it work.
Can anyone help ?
Thx a lot.
Isa.

Hi,
Declare a Ztable inside the form of the type declared in the FM with a header line.Assign the fields that u require to pass through the table and append to this Ztable.
Now pass this Ztable to the parameters of the FM.
This should help u out...
Mark useful answers...

Is there a way to call a function with in the initializer of a ArrayCollection?

    Is there a way to call a function with in the initializer of a ArrayCollection?
It won't let me do this:
var ac:ArrayCollection = new ArrayCollection([
                    {childName:'addTrade',index:addTradeIndex },
                    {childName:'tradeList',dealsCanvas.getChildIndex(tradeList) }

The correct syntax is
var ac:ArrayCollection = new ArrayCollection([
                    {childName:'addTrade',index:addTradeIndex },
                    {childName:'tradeList',index:dealsCanvas.getChildIndex(tradeList) }

How to call a function with event

How do I call a function with a event inside it?
function showTopTen(e:Event):void
highscoreData = new XML(e.target.data);
trace("Hiscores: " + highscoreData.item[0].name.text() + " - " + highscoreData.item[0].score.text())
//showTopTen(); ..??

Could you indicate why you would want to?
The eventhandler you show here uses the properties of the event object passed as an argument.
The way I read it it is data retrieved from a server so your app won't know anything about is untill it is loaded from the server which should be done with an URLLoader object which in it's turn calls your eventHandler when the Event.COMPLETE is triggered.
something like:
var urlLoader = new URLLoader();
urlLoader.addEventListener( Event.COMPLETE, showTopTen )
urlLoader.load( new URLRequest( "http:// etc." ) );
to me would seem the proper method to have the function execute.

Is is possible to call a function or method before JVM exits ??

Hi All,
Is is possible to call a function or method before JVM exits where System.exit() is used.
I am calling a program where System.exit is used. i need to call a function before the JVM exits.
Please help me.
Thanks,
J.Kathir

How to call the method ? Did i have to call the shudown hooks method in my main class ?
Is it possible to have in subclass?
is the below code is correct ? i am calling a class before System.exit is called....
java.lang.Runtime.getRuntime().addShutdownHook(...My Own Class()....)

Is it possible to call Normal function Module from WD4A , Not RFCs

Is it possible to call Normal function Module(FM) from WebDynPro for ABAP , Not RFCs

There is no difference, unless you are specifically calling the RFC to connect to another system. If so, then you need to add the DESTINATION keyword to the function call and specify the destination name. This name must be defined in SM59. But, if you are not going to another system, you can call the RFC the same way you call the regular function module.
REgards,
Rich Heilman

Is it possible to call a function with the same name from 2 different dll's at the same time.

Similar Messages

Maybe you are looking for