call c++ function in Java with input and output arguments

Question

I have a c++ code which has been connected to a visual basic user interface by someone else. Here is one of the functions code that connects c++ to visual basic:

Answer 1

Here is an instructional example to help get you started. In this snippet, Java2Win64 is the DLL that contains the native code to execute. Function functionMaryam() takes 1 param as int and returns an int. Easy to expand for any data type. public class JnaExampleMaryam {

// ------------------------------------------
// Java2Win.class
// ------------------------------------------
public interface Java2Win extends Library {
    Java2Win call = (Java2Win) Native.loadLibrary("Java2Win64", Java2Win.class);
    int functionMaryam(int i);
}
// ------------------------------------------

// ------------------------------------------
// Test
// ------------------------------------------
public static void main(final String args[]) throws Exception {
    final File file = new File("rootToDLL", "Java2Win64.dll");
    LibraryLoader.loadLibrary(file);

    int result = Java2Win.call.functionMaryam(42);
}
// ------------------------------------------