Re: Jawin-Calling a DLL Entry Point

Hi Hua

Hua Fang wrote:
>
> Assume the instruction string "AIGG::n4" I wrote is correct, now I got the
> following exception:

I looked quite a bit on this problem over the weekend, and I am sorry to
say that the instruction string I thought was correct last week, is not
correct.

I have tried different instruction strings on some test-code with the
same method-signature that you mentioned. And it seems that Jawin pt. is
pretty bad at handling the construction with a caller-allocated buffer
(as in your case). At least I have been unable to get it to work.

Unfortunately, I can not promise you that I will find time to look
further into the issue in the near future. Sorry about that.

>
> Exception in thread main:java.lang.NoSuchMethodError:
> org.jawin.COMError:method <init>()V not found.

This must be the native DLL code calling out into the JVM. The COMError
does not have a no-arg constructor, but I am unable to find the call in
the native code to this. So I am a little surprise this happens (perhaps
a "null" deep down in the native code will trigger this behaviour - I
will have to test that when I find time for it - thanks for bringing
that to my attention).

The COMError in the first place is triggered due to an unexpected
runtime exception in the DLL (probably due to the incorrect instruction
string) - there is not much you can do about this.

I am sorry for not really bringing you any further.

Best Regards
Morten