Accessing DLL files from Java

Question

I have a problem with Java, and the problem is that I'm trying to call a DLL file declared by C++ only but without a support for Java programs, is what I'm aiming for going to be available by using the rundll32.exe file.
Note: I'm trying to use the (skydll.dll) file for controling skystar2 DVB card.
Message was edited by:
JZoro

Answer 1

You cannot directly call a DLL from Java unless the DLL exposes entry points that are compatible with the JNI calling conventions.
For example a Java class calling a native function like below:
class Arguments
   private native void setArgs (String[] javaArgs);
   public static void main (String args[])
      Arguments A = new Arguments();
      newArgs[] = A.setArgs(args);
   static
      System.loadLibrary("MyArgs");
}Needs a DLL entry point with the following signature:
JNIEXPORT void JNICALL
Java_Arguments_setArgs (JNIEnv *jenv, jobject job, jobjectArray oarr) {Notice that the first parameter of the method is of type JNIEnv and the second can be either a reference to a class or Java object instance.
Jacques Gonzalez
J4SOFT