How would I call a method inside a dll?

Question

How would I call a method inside a dll? Is it even possible in Java? Like in VB you would do something like this: XXX.dll --> XXX.Activate()... I have already loaded the dll like this:
String xxx = "C:/WINDOWS/system32/xxx.dll";
System.load(xxx);
Please help?
THX

Answer 1

I've got another question.
I've gone through the link you posted and a couple others that I found.
I am able to create an interface using the windows kernel32.dll and go through an example I found.
But when I try to use a dll that I have from another application, I have problems.
Here is what I have for the interface.
public interface IAiCamDeviceControl extends StdCallLibrary {
     public IAiCamDeviceControl INSTANCE=(IAiCamDeviceControl)Native.loadLibrary("D:\\IAiCamDeviceControl.dll",IAiCamDeviceControl.class);   
//        public long GetVersion( String s );
//        public long Close();
}The interface that works looks like this:
public interface Kernel32 extends StdCallLibrary {
     public Kernel32 INSTANCE=(Kernel32)Native.loadLibrary("Kernel32",Kernel32.class);I thought that the problem might be using the path name for the library, so I copied it into the system32 directory.
Still get the same error:
Exception in thread "main" java.lang.UnsatisfiedLinkError: Unable to load library 'D:\IAiCamDeviceControl.dll': The specified module could not be found.
My main looks like
public class Main {
    public static void main(String[] args) {
//          Kernel32 lib=Kernel32.INSTANCE;
//          Kernel32.SYSTEM_POWER_STATUS batteryStatus=new Kernel32.SYSTEM_POWER_STATUS();
//          lib.GetSystemPowerStatus(batteryStatus);
//          System.out.println(batteryStatus);
            IAiCamDeviceControl camDev = IAiCamDeviceControl.INSTANCE;
}The commented part is from the version that worked.
All I attempted to do here was just create an instance of the interface.
Any idea why I can't access the dll?
The dll is the same one that is used successfully in VB, C#, and C++ demo programs, so I suspect it is a good dll.