Invoking JVM + GUI components from C/C++

Question

My C/C++ program does the following:
1. Create JVM using : JNI_CreateJavaVM(...);
2. Find the class using : jclass cls = env->FindClass(loadClass);
3. find the method using : jmethodID mid = env->GetStaticMethodID(...);
4. Invoke a method using : result = env->CallStaticIntMethod(...);
Now all of this works and does mostly what I expect. The problem is that it never returns. The invoked java method creates a GUI containing various buttons. If the cancel button on the GUI does a System.exit(0), then the whole process, including my C/C++ program terminates. NOT what I want!. I assume that although the static method has terminated (create the GUI and make it visible), the GUI threads are still active. If I change the cancel button to call setVisible(false) and dispose(), the dialog disapperars, but the java method never return to the native code.
So, what is the process I could use? Essentially, this code is attemptng to use Java as the device independent GUI for some exsting code.
Thanks

Answer 1

If the GUI is "disposed", then what is it you want the C code to do?
If it is just cleanup, then an alternative would be to create a callback routine in C, and call it from java.