Canon Camera and working with EDSDK

Question

Hi all.
I am working with Canon Camera and Java, i got SDK of Canon and also had some DLL file : (EDSDK.Dll ...)
I write some example code
public class EDSDK{
public native static int EdsInitializeSDK();
static {
System.load("C:\\Java\\CameraDemo\\ EDSDK.Dll");
public static void main(String[] args){
EDSDK.EdsInitializeSDK();
}when i run this code, it appears wrong message.
Exception in thread "main" java.lang.UnsatisfiedLinkError: EDSDK.EdsInitializeSDK()I
    at EDSDK.EdsInitializeSDK(Native Method)Have you had some experiences with Canon SDK ? Please help me that Java can work with them ?
Thanks in advance
Diego
Edited by: Diego

Answer 1

We'd really appreciate it if you could push us in the right direction here. Thank you very much in advance.Presumably you have already created a JNI code without any C# calls in it - just a demo. And gotten that to work. If not that is your first step.
Note that it must NOT be managed C++.
After that then you must deal with the complication which C# brings to the table in terms of dlls.
See this thread for hints (not necessarily a complete solution.)
[http://forums.sun.com/thread.jspa?threadID=5400142&tstart=0]
As a suggestion it is a lot easier and safer to wrap a library in an executable (C++) and provide a comm API of some sort and then manage that from java via Runtime.exec(). These days I would always take that choice unless something specifically stopped me from doing that.