DLL in C++ for Dynamic Data Exchange

We need to develop a component in C++ that listen to all conversation in DDE (Dynamic Data Exchange) and use that component in a Java application. The problem is that we have a local application that communicate in DDE with differents TOPICS and ITEMS and we need, in our application, identify all topics and items and listen to all these conversation. We need 2 classes to solve this problem: * a class that monitor all DDE active conversations in the local PC * a class that we must can instantiate n times and that can read the value of a single Topic and item key. The JNI Interface is Optional. The classes that we need must support the following methods and events: Class DDEMonitor: Methods: * Start * Stop Events: * OnNewConversation * OnStart * OnStop Class DDEClient: * Connect * Request * RequestAsync * AdvStart * AdvStop * Disconnect Events: * OnDiscconnect * OnItemChanged * OnConnect