Create a DLL File

how to create a DLL file in java? give some useful information

is it possible to convert .class file to dll fileYes with [url http://www.excelsior-usa.com/home.html]Excelsior JET.
I tried it once a long time ago and worked well.
Also there is [url http://gcc.gnu.org/java/]GCJ. Very good but incomplete.
Maybe there are [url http://www.google.com/search?sourceid=navclient-ff&ie=UTF-8&rls=GGGL,GGGL:2005-09,GGGL:en&q=convert+java+exe]other products out there (Google is your friend).
Regards

Similar Messages

How to create a dll file for lab view?

Hello
I want to create a DLL file for LabView. Can anyone help me in this issue?
Regards
Vivek

Please explain.
Do you want to create a dll in another language (which one?) for use in LabVIEW or do you want to create a dll out of your LabVIEW code?
LabVIEW Champion . Do more with less code and in less time .

How to create a .DLL file from a .C file ?

Hi everybody
I'm looking for a method how to create a .DLL file from a .C file .That Dll file will be used to perform a board to measure voice quality accoding to the international standard named PESQ (perceptual evaluation of speech qualty) P.862.
Can anyone help to start dealing with Dlls and give some advices to avoid errors ?
thx
Attachments:
source.zip ‏37 KB

Hi sinaps,
You mention that you want to create a DLL from a .C file. Just to clarify, are you using C (.c file) or C++ (.cpp) to write your code?
Also, if you are using C++, are you using Visual Studio? (The reason I ask is because this forum is geared towards Measurement Studio, which is an add on to Microsoft Visual Studio).
That being said,
If you are using C: National Instruments provides an ANSI C Application Development Environment called LabWindows/CVI which makes building dlls a snap. It has templates for DLLs and you can build them either as stdcall or cdecl dlls.
Developer Zone Tutorial: Building a DLL with LabWindows/CVI 8.5 for use with LabVIEW 8.5
If you are using Visual C++: Look at the link that Al provided earlier.
MSDN: Walkthrough: Creating and Using a Dynamic Link Library
If you aren't using CVI or Visual Studio, then really the best bet is to do a google search for "Create C DLL" or post or a forum for the appropriate environment that you are using.
Thanks!
Message Edited by Jervin_J on 03-14-2009 02:02 PM
Jervin Justin
NI TestStand Product Manager

Problem occured while creating a .dll file which has to be used in CIN

hi all,
i am a rookie in labview,iam getting an error while trying to build .dll file in vc++ 6.0 , i followed all the instructions available in labview "using External Code" manual,the error was as follows;
Compiling...
CINsample2.c
Linking...
Running LVSB Utility
The system cannot find the path specified.
Error executing c:\winnt\system32\cmd.exe.
sample1.dll - 1 error(s), 0 warning(s)
plz help.
santosh.
Regards,
santosh

Hi santosh,
It sounds to me that you are mistaking CINs (Code Interface Node) with
DLLs (Dynamic-Link Library). You mention that you want to create a DLL
in Microsoft Visual C++, but the errors you are getting are related to
CINs.
Don't worry! Here are my favorite links to getting started creating and using DLLs with Microsoft Visual C++ and LabVIEW:
How to Build a DLL with Visual C++
Creating and Calling LabVIEW DLLs with Various Data Types from Microsoft Visual C++
I hope that this helps you to get on the right path.
Have fun!
- Philip Courtois, Thinkbot Solutions

Create .DLL file to register an UDO

Hi,
How do we create a .DLL file to register an UDO? I would appreciate if you can give me a step by step minute details.
Regards
Sudatt

Sudatt,
The SAP Business One SDK Documentation covers the creation of a .dll to work with a UDO. You can find the documentation at Customization Tools > User-Defined Objects > Creating a UDO > Step 4: Extending Business Logic.
Eddy

Can i use DLL file created by Fortran with the call libary function node

Can i use a DLL created by Fortran (Compaq Visual Fortran) with the call library function node in labview. If yes how do i create the DLL file if i have the Fortran code.
Thanks

Yes! Maybe these old post will help:
http://forums.ni.com/ni/board/message?board.id=170&message.id=88786
http://forums.ni.com/ni/board/message?board.id=170&message.id=109150
Good luck!
Message Edited by altenbach on 03-21-2006 02:35 PM
LabVIEW Champion . Do more with less code and in less time .

How to create dll file from c code to use in compactrio 9004 RT controller

Hi.
I am using Compactrio 9004 Real time controller and i am new to this. I have a C code and i want to use this with the RT controller.I red that that can be done by creating a dll file and can be called in labview.Can any body expalin how to create a DLL from the c code and be used with this RT controlelr?
Regards,
Vishnu

vishnu123 wrote:
Hi,
Earlier in this forum itself in cRIO 900x controllers will run Pharlap and run C/C++ code compiled into .dll files.Can you please tell how to transfer the created DLL to RT controller memory throght FTP?
Thanks and regards,
Vishnu
There is another KB article about this for Pharlap based controllers. And you are right the earlier CompactRIO controllers were Pharlap based. Basically for a deployed application to work, you need to put the DLL through FTP in "/ni-rt/system". If you deploy it directly from the project everything will be loaded into memory through the project environment itself including directly dependable DLLs, (but of course won't survive a power cycle).
I hope you are aware that while Windows DLLs can work on Pharlap OS they by no means will do so always. The Pharlap OS has not a fully featured Windows API. Also you need to be careful which version of Visual C you are going to use depending on the Pharlap OS version, since the VC runtime DLLs already present on the controller will need to be the same as the ones your Visual C environment likes to link in. Recent Pharlap OS versions use the msvcr71.dll. It's very possible that those runtime libraries can't just simply be copied from a normal Windows installation but might have been recompiled by NI specifically for their controller targets.
So to avoid problems it's a good idea to make sure your DLL uses the same runtime library DLL or make your DLL to include the static MS runtime.
Rolf Kalbermatter
Message Edited by rolfk on 02-05-2008 09:51 AM
Message Edited by rolfk on 02-05-2008 09:53 AM
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

How to convert java class to dll file for using in Microsoft Technology(.n)

hey hemmj !!!!!!
nice replying , first of all i d like to say thanks for response me so frequently..... i like such type of guy... i d never forget ur online support.
hey buddy, i ve a problem with applet application...
i m working on java chat server build on swing applet. As it is chat server, it is divided into two parts, one is server application and other is client application. I want to run this server app on the client server and the basic thing with this site is that it is running on .net platform(Microsoft). and the other app ll running on the client machine or end user. Now the problem is that this site would run only if the server app ll be run on server. This server app ll open the socket of server, which ll listen the request of the user...... So, the requirement is to convert this java sever class file into dll file and register this dll file with the IIS server.So, It run and stop with the IIS server.
I ve already search the way to convert the java class file into dll file. This is possible in such way........... below code is for the java class file...
import java.net.*;
import java.io.*;
import java.util.*;
public class chatServer
public static void main(String args[]) throws Exception
ServerSocket sersoc=new ServerSocket(1234);// Any port number above 1000 should do
// as most ports below 1000 are used by system
Vector socvec=new Vector();
String data="";int i,j=0;
BufferedReader in;
//System.out.println("Listening of port " + sersoc.getLocalPort());
//System.out.println("Waiting for connections...");
while(true)
Socket soc=sersoc.accept();
socvec.addElement(soc);
chatServerReadThread csrt=new chatServerReadThread(socvec, soc);
in=new BufferedReader(new InputStreamReader(soc.getInputStream()));
PrintStream out=new PrintStream(soc.getOutputStream());
out.println("Connected to chat server");
out.flush();
data= in.readLine();
for(i=0;i<socvec.size();i++)
soc=(Socket)socvec.elementAt(i);
out=new PrintStream(soc.getOutputStream());
out.println(data + " connected");
out.flush();
//System.out.println(data + " connected");
csrt.start(); // error is comming from here..... plz help me.
class chatServerReadThread extends Thread
Vector socvec;
PrintStream out;
chatServerReadThread(Vector socvec, Socket soc)
this.socvec=socvec;
try
out=new PrintStream(soc.getOutputStream());
}catch(Exception e){}
public void run()
try
String data;
Socket soc;
BufferedReader in;
while(true)
for(int i=0;i<socvec.size();i++)
soc=(Socket)socvec.elementAt(i);
in=new BufferedReader(new InputStreamReader(soc.getInputStream()));
if(in.ready())
try
data=in.readLine();
if(data.charAt(0) == ']')
data = in.readLine() + " exited";
//System.out.println(data);
socvec.removeElement(soc);
for(int e=0;e<socvec.size();e++)
soc=(Socket)socvec.elementAt(e);
out=new PrintStream(soc.getOutputStream());
out.println(data);
out.flush();
else
for(int e=0;e<socvec.size();e++)
soc=(Socket)socvec.elementAt(e);
out=new PrintStream(soc.getOutputStream());
out.println(data);
out.flush();
}catch(Exception e){socvec.removeElement(soc);}
}catch(Exception e){e.printStackTrace();}
first i ve made the jar file of this class
jar cvf chatServer.jar chatServer.classafter getting the jar chatServer.jar. I ve opened the .net dos prompt and
type this command which ll make dll file automatically....
> jbimp /t:library chatServer.jar
And you'll see the following output:
Microsoft (R) Java-language bytecode to MSIL converter version 1.1.4322.0
for Microsoft (R) .NET Framework version 1.1.4322
Copyright (C) Microsoft Corp 2000-2002. All rights reserved.
Created chatServer.dll
I cant get the problem origin from where it is comming, when i tried to convert it into .dll file it shown an error that, it did not recongnized the method in first class
public static void chatServerReadThread.start() method
is not recognized by .net dos prompt commnad. But when i omit this method it gets created the .dll file. This start method is basically the default method of thread class that run the thread from the same class..
By vewing the code u can visulize the thing,, i ve marked the code from where the error is comming.
Plz do it as soon as possible, i ll waiting for ur reply......
I ll be really thanking u for that....
Thanx and regards
Niraj Kumar Singh

I wonder if this will work:
jbimp /t:exe chatServer.jar
Your chatServer is an application that can be started from the commandline.
A dll is a library to be used in com, com+, other executables or ....

Working of dll files in a application

i have create a dll file i visual c++ 2008 and i want to use that file in a application that written in ms visual besic v6. i am trying to call the function from the visual code but when i call the function using "call
functionname(parameters)" i am getting en error that is "AccessViolationException was unhandled".
i also have declear the function in the application using "Declear Sub <Functionname> lib <dll path>( Byval <all-parameters> as <datatypes>)".
i have used the defination file (.def) in c++ dll where i exports all the function by their name.
please some one help me out regarding this.

VB6？ That is not supported in these forums.
Check this link:Where to post your VB 6 questions
remember make the reply as answer and vote the reply as helpful if it helps.

How to craete dll files

I want to create dll files in j2sdk1.4
could anyone please tell me waht is the use of dll and how to create them.

Hi Can you be more descriptive on this like
I want to create dll files in j2sdk1.4In the sence you want to create a .dll file using java or you want make your java code as .dll file or what else...?
could anyone please tell me waht is the use of dll
and how to create them.google in MSDN forums for best results
and also can you tell me what is your exact problem or what you want to do exactly ....
---Vidya

Compiling iTunes Pluging .dll file

Hi,
I'm trying to just test the plugin that came with the visual plugin SDK. The .dll file that was provided works fine in iTunes. When I go to compile it myself using Borland C++ compiler iTunes doesn't recognize my .dll file.
I compile it with the following command : bcc32 -WDR iTunesPlugIn.c iTunesAPI.c
-WDR is the flag that lets me create a .dll file. I noticed that my dll file is only 11 kb and the dll provided is 54 kb.
Anyone know why this could be?
Thanks in advance.

anyone know why this is happening?

How to add dll file in a Jar to create executable file

Hi All!
I have one Java file which use one Jar file & three dll file.
I create jar file as described in java tutorial
http://java.sun.com/docs/books/tutorial/deployment/jar/appman.html
1) I created Manifiest.txt by writting :
Class-Path: C:\Flasher\jflashtrial\JFlash.jar
Main-Class: Flaher2
2) I create jar file by:
jar cfm MyJar.jar Manifest.txt *.class
It create MyJar.jar successfully.
After that I used Jar2Exe Wizard to create Myjar.exe
It also create MyJar.exe file, but when I tried to open It , It did open & also didn't give any error message too.
Before this I created one exe file by the same way except; that file does not using any dll or jar file so for that I create my jar file by simply without using Manifest.txt
I wrote:
jar cf MyJar.jar *.class
After that I creat it's exe bu using Jar2Exe, It create its exe file & it's work well.
So for my next try with one jar file & three dll file, what is wrong ?
I saved my exe jar file & dll filea file in a same folder. But still have a problem .
What I did wrong/skip in creating Jar file.
Your any help regarding this topic would be appreciated
Kirti

Hello,
Getting all of this to work right is a bit of a challenge. I haven't used jar2exe at all, but we have a number of native libraries that we support that have to use dll's. I would recommend adding a static initializer like
public class flup {
static {
try {
System.loadLibrary("flup"); // will look for flup.dll in the %PATH%
} catch (Exception e) {
e.printStackTrace();
This should give you a little more information about what is failing. Chances are the dll's are not in the PATH. You may be able to get around this by using regsvr32 to register the Dll's but I have had mixed results with that solution.
You also may be able to write a simple c++ program that uses the dll's (or maybe you already know of one) and use the "depends.exe" program from Microsoft's Platform SDK to examine the full dll dependency tree if you continue to have problems.
Best of Luck,
Andrew

Using call library function on a dll file created in an old version of labview

So I'm trying to update an old labview program to work in labview 2012. Everything converted over just fine but labview will always crashoverwrote some while using a library function in a DLL that was compiled using labview 8.5. Labview exits, stating that it vital memory area. It passes an array of data to the library call and an empty array for output. I thought I could get around this problem by changing my code to initialize the array being passed in so that it would be large enough to hold all the expected output. Now instead of overwritting areas of memory it shouldn't, I get a pop up message that says:
fatal internal error
memorymanager.cpp line 406
8.5.1.f5
So it appears because I don't have the ability to recompile the DLL file it runs off of the 8.5 runtime instead of the more recent one. Is there any thing I can do about this?

rjpierce wrote:
So I've been trying to figure out a way around this on my own while waiting on a response. From what I'm reading, a dll created in one version of the labview runtime can't be used by a different labview runtime. Am I correct in this? I feel like I must be mistaken since that's basically the opposite of how a dll should work. If nothing else works I have access to the original code for the DLL but it requires the control and simulation toolkit. I would like to avoid having to recompile the DLL since it was put in to a DLL to avoid the need for the toolkit to begin with.
Your problem most likely is that you try to pass native datatypes to the DLL function? That only can work if the caller and callee use the same LabVIEW runtime engine. Otherwise the memory block created in the memory manager of the caller will be accessed by the memory manager in the callee and bad things happen. Instead you should define the DLL function to use standard C datatypes (Pointer to C array) and also make sure to allocate the according buffer in the caller for all output array parameters.
An even more elegant way would be to completely abandon the DLL approach and call the according functions directly in LabVIEW. Then you won't have the problems about mismatched runtime engines. Passing C array pointers to a DLL is less performant than passing native datatypes, but if you use native datatypes you have to make sure the DLL is compiled in the same LabVIEW version as the one you call it from.
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

Dependency list in project shows 2 DLL files. What do I need to do when creating a stand-alone executable file to ensure that it is included?

When the executable that I created is run on a stand-alone machine, a search is instantly launched to locate the missing *.DLL files along with about 20 other sub vi files from an example vi file that I downloaded last week. Once the exampe vi was open, I modified the block diagram and the front panel and then I resaved it with a new name.
The missing sub-vi files are the same files that I saw listed in the Dependencies list of the project along with the 2 DLL files. This problem shouldn't be happening because I included the top level vi file that contains the sub-vi files into the source files list under the Start-Up VIs window of the application properties. What needs to be done to make this stand-alone executabale complete?
/BCU002
Hardware Engineer•Design Reliability/Performance and Validation Group•Wavecom, Inc. - Research Triangle Park, N.C.•http://www.wavecom.com

OK...So it's not a simple as clicking the mountian icon above and inserting the location of the picture file on my PC huh? It works on my end just fine, but I understand you all don't see it.
I really don't understand why this is such a complicated process in this discussion forum, but your explanation isn't working for me. SO, I'm going to write what I understand to be the proper procedure and you tell me if it's wrong.
Attach my image using the Browse button below. That makes sense. Done that.
Edit my post - Edit it? How is typing this message in the window any different from editing my post??? Are you sugesting that I Edit As HTML(http://forums.ni.com/ni/board/post?board.id=170&message.reply_to_id=244152#) using the shortcut in the lower right hand side of the frame??? I not, please explain a different way.
I right clicked the adress in the window under the Attachment heading below the lower left hand side of the frame, copied it and pasted it into the Script Prompt: dialog pop-up that appeared when I clicked on the mountain icon in the tools menu. By the way,
Now I see my image in the post just before I sent it.
Don't you see it now?
As for the DLL file - the ONLY way I can find the DLL file that I need is to refresh the dependencies list in my project. As I explained in my previous posts, those two DLL files came with an example vi that i downloaded from the NI website last week and they must have been embedded inside of the example because I didn't create them myself and I've since resaed the original example vi as one that's been renamed by myself. In doing so, I presume that the DLL file was inherited from the original example vi file to my own vi file. However, that's clearly not the case because every time I run the executable file that I created with the renamed example vi file in my project, it immediately launches a searchfor the DLL files that it claims are missing!!! SInce the DLL files are ONLY visible in the dependencies list, I can't transfer them to the Dynamic VI and Support files window in the Application Builder. SO, I drag them up the Source Files tree in the Application Builder to the top of the tree where the Start-up vi is located and then I can move them to the Dynamic VI and Support Files window. Those DLL files don't appaer inthe top level of the tree where the Start-up vi appears before I move it to the Start-up vi window of the Application Builder. I'll try it again.
/BCU002
Hardware Engineer•Design Reliability/Performance and Validation Group•Wavecom, Inc. - Research Triangle Park, N.C.•http://www.wavecom.com
Attachments:
FTM1-BlkDgrm.jpg ‏780 KB

Howto create a hlp file that a DLL referes to in teststand ?

Hi,
I have made a .odl file with links to a .hlp file.
How do I create a .hlp file with the correct refs?
Does NI have a sample witch generates a hlp file ?
Regards
Anders

Hello Larry,
I have an information plug-in that gets a little more specific. In all I have 850,000 verticies (2 points and a connecting line segment) which equates to about 5,250 paths. I can't simplify too much, however, I have simplified the paths 5 x at 99%. If I try to simplify at just 95% my contour lines will not line up with my streams and valleys.
Do you know the maximum amount of verticies that can be handled?
Thanks,
kru

Create a DLL File

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