Ventana software support forum

Dear Administrator,

Thanks again. I've sent an email to you.

maxin

Another observation, if the vensim DSS is installed, the lookup tables all appear in front of the main screen, in both Windows 7 and XP environment.

maxin

Hi. Yes, it does not seem to work. The vensim manual mentioned this command does not work in java environment? However I observed an interesting behavior and let me describe it to you. On Windows 7 machine, when open my application (.vpa) for the first time, a .jar (caller) will be extrated. The mai...

Hi. When I invoke a lookup table for the first time after starting a java vensim application, the table appears behind all other windows currently opened. However, after the first time, the table will be opened in the front, which is what I want. Is there a way to set the lookup pop-up windows alway...

Yes, I know that. The application is in the form of .vpa. Most of the users run the application using model reader with no problem, because the error message never comes out when they install. And the installation is usually fairly easy, people just click through it. Just one user, when installing t...

Thanks. That's what I thought. The dll will automatically go to C:\Windows\System32 in 32 bit system no matter where you choose to install main program and supporting files. The error message appears in the end of the installation process, and it did prevent my all application from running normally....

Hi. I have a question regarding to vensim model reader installation. Is the VenDLL32.dll installed automatically into a pre-defined destination? During the installation process, it will ask two installation directories, one for the main program and the other for the supporting files. I'm assuming I ...

Thanks, Tony. I forgot to mention that if I package it as .vpa file, the vensim model reader can open the application successfully. Later on I found a way to package the application as a .jar file (I found it more clean compared with .vpa method because only one .jar appears on users' machines inste...

When I publish .vpa, I unticked "Readable by" for DSS, Runtime, Model Reader. The .vpa file cannot be opened. Am I missing something? Thanks.

Hi. I've developed a java application using Vensim DLL. I packaged the application as a .jar file which includes the vensim model. When you run the .jar file, the vensim model will be extracted to the same directory so that the model can be exercised via my application. The .jar file works fine on m...

Thanks for your prompt reply. Also, there's one thing I would like to confirm. Is it true that if I give users .vpa file, then they won't be able to see the underlying model, i.e., they can exercise the application but cannot see the structure/equations of the model? Thanks.

maxin

Hi. I have developed a java interface for my vensim model (using DLL). I want the model to be password protected. I'm wondering if there is a way to send the password through the java code directly so that the vensim "enter password" pop-up window won't show when opening the interface. In ...

I have Vensim DSS 5.7a and I do not find GET DIRECT DATA function in it. Is the fuction a recent update? Thanks.

maxin

Thanks, Tony. But somehow I cannot locate GET DIRECT DATA function in the manual. Could you direct me to the right spot?

maxin

I use GET XLS function in my vensim model to import data from an external excel spreadsheet. When running the model, the excel spreadsheet also opens up automatically. I'm wondering if there is a way to "NOT" auto run the excel spreadsheet when running the vensim model? Thank you.

maxin

Hi. I am wondering if vensim dll works with 64 bit machine (windows 7). I have a java application for vensim model and it does not seem to work if I install java 64 bit, however it works if I install java 32 bit. So, my question is 1. is there a 64 bit version of DLL? 2. if not, then is it true that...

Thank you.

Hi. Can I change the directory where the .vdf can be generated after each run? In specific, currently, the vdf files are generated in the same directory as my vensim model. I would like to organize these vdf files in a specific directory. Am I able to do that? If so, how to do that? Thanks. maxin

Thanks, Bob.

I developed the java application on Windows 7 (64 bit). And I tested both on that machine and a machine with Windows XP.

Bob, is my "not writing the path of the model in the java application" correct for the distribution purpose?

Many thanks.

Thank you, both Tony and Bob. First, I tried Tony's method to run the java application and it did not work. Let me try to explain my questions in more details (I apologize if it seems long, just try to record every step I did). Step 1: I created a java application to control my model using "ven...

Hello, I have created a java application, app.jar, which calls VenDLL32.dll. I'm preparing to distribute it to some users, who have installed Vensim Model Reader. I tried to create a .vpa file which contains the application file (.jar), the model file (.vpm), and some data file (.vdf). When I try to...

That's too bad. It would be a plus if I could utilize those tools.

But, thanks again, Tom.

maxin

Thank you, both Tony and Tom. That really helps a lot.

I have another question and hope you could help to answer. In Venapp, I can use Causes Tree, Sketch (viewing my model structure), and Graph function. Is there way to utilize these functions as well in my java application?

Thanks again.

maxin

Hi. I'm trying to use vensim DLL to control the model on my java application. I am wondering how can I control a lookup table using dll. I want the function something like MODTABLE in Venapp. If anyone could help to answer this, I would really appreciate it. Thanks.

Thank you very much, Bob.