🚀 go-pugleaf

chris <tborg1@bigpond.net.au> wrote:
> Hello

> I was wondering if anyone out there would know how to link jbuilder to dll
> file. I am trying to access the parallel ports on NT and XP computers and
> had to write an dll in c++ to read and write to and from the LPT1 port
> (becuase I was having trouble getting the inputstream to read bytes from
> parallel port using Java communication API, and after couple weeks of trying
> gave up on that approach).

> The class I wrote is a simple one and here code I used in jbuilder

> public class accessport {
>     public accessport ( int portBase )
>    {
>       this.portBase = portBase;
>    }
>    /** Initialize the port */
>    public boolean Initialize(){
>          return accessport.StartInitialize();
>    }
>     public static native boolean StartInitialize();
>     static
>      {
>       System.loadLibrary("winio");
>    }
> }

> When I complie the program there no error, but when I try to run
> Initialize() I get an

> Exception occurred during event dispatching:
> java.lang.UnsatisfiedLinkError: StartInitialize

> I was wondering if anyone known what I need to do to get dll program to
> work....

> Thanks
> Hope someone can help me


You need to place your dll somewhere where the JVM can find it.
This could be c:\Winnt\System32, or it could be elsewhere if you tell
the JVM where to look using the -Djava.library.path VM Parameter in
Project Properties | Run.  See here for more info:

 http://www.visi.com/~gyles19/cgi-bin/fom.cgi?file=95




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Joi Ellis (TeamB)               http://www.teamb.com/
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