Re: Unable to Expose Java Methods to Excel VBA

Hi Jereon,

 

Thanks for the reply.

 

Yes, I have followed the steps in the link provided, but still not able to
see the java methods from excel vba.

 

In your opinion, do you think signing the assembly with ildasm/ilasm will
affect the DLL?

 

Cheers,

Colin

 

From: Jeroen Frijters [mailto:[email protected]] 
Sent: Tuesday, 2 June, 2015 3:46 PM
To: Colin Chin; [email protected]
Subject: RE: [Ikvm-developers] Unable to Expose Java Methods to Excel VBA

 

Hi,

 

Have you tried following these steps:

http://stackoverflow.com/questions/14967080/how-do-i-make-a-dll-created-with
-ikvm-com-visible

 

Second, why are you using ildasm/ilasm to strong name sign the assembly? You
can use the ikvmc -keyfile:<keyfilename> option to directly sign the
assembly.

 

Regards,

Jeroen

 

From: Colin Chin [mailto:[email protected]] 
Sent: Tuesday, June 2, 2015 4:58
To: [email protected]
<mailto:[email protected]> 
Subject: [Ikvm-developers] Unable to Expose Java Methods to Excel VBA

 

Hi,

 

I was trying to call Java methods from with Excel VBA.

 

I tried one of the sample, and here is my code:

 

Assembly.java

 

import cli.System.Runtime.InteropServices.*;

 

@cli.System.Runtime.InteropServices.ComVisibleAttribute.Annotation(true)

interface Iassembly {

              public int method1(int x,int y);

}

@ClassInterfaceAttribute.Annotation(ClassInterfaceType.__Enum.AutoDual)

public class assembly implements Iassembly

{

  public int method1(int x, int y)

  {

      return x + y;

  }

}

 

And these are the steps I have followed to use IKVM to convert the java
class to DLL:

 

1.           javac -cp mscorlib.jar;. assembly.java

2.           ikvmc -out:assembly.dll assembly.class -r:mscorlib.dll

3.           tlbexp assembly.dll

 

I then signed the DLL with a strong name by doing these:

 

1.           ildasm /all /out=assembly.il assembly.dll

2.           sn -k mykey.snk

3.           ilasm /dll /key=mykey.snk assembly.il

 

Then, I do the type library export:

1.           tlbexp assembly.dll

2.           regasm /codebase assembly.dll /tlb

 

Everything runs well, and when I add reference in excel VBA, I can see
"assembly" is there. But when I use object browser to see the methods,
nothing is exposed, I only see the one <global> word there.

 

Can someone please tell me what have I done wrong in my java code? Anything
I need to add to expose my methods to be usable in excel VBA?

 

Many thanks.

 

Cheers,

Colin

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