Method Invoke

lib/jacob-1.20_src/jacob-1.20/jni/EventProxy.cpp:155–279

The actual callback from the connection point arrives here

// The actual callback from the connection point arrives here
STDMETHODIMP EventProxy::Invoke(DISPID dispID, REFIID riid,
    LCID lcid, unsigned short wFlags, DISPPARAMS *pDispParams,
    VARIANT *pVarResult, EXCEPINFO *pExcepInfo, UINT *puArgErr)
{
  	const char 	*eventMethodName = NULL; //Sourceforge report 1394001 
  	JNIEnv      *env = NULL;

  // map dispID to jmethodID
  for(int i=0;i<MethNum;i++) 
  {
    if (MethID[i] == dispID) { 
		USES_CONVERSION;
		eventMethodName = W2A((OLECHAR *)MethName[i]);
    	}
  }
  // added 1.12
  if (!eventMethodName) {
  	// just bail if can't find signature.  no need to attach
	// printf("Invoke: didn't find method name for dispatch id %d\n",dispID);
   	return S_OK;
  }
  if (DISPATCH_METHOD & wFlags) 
  {
        
    // attach to the current running thread
	//printf("Invoke: Attaching to current thread using JNI Version 1.2\n");
		JavaVMAttachArgs attachmentArgs; 
        attachmentArgs.version = JNI_VERSION_1_2;  
        attachmentArgs.name = NULL; 
        attachmentArgs.group = NULL; 
        jvm->AttachCurrentThread((void **)&env, &attachmentArgs); 
		if (env->ExceptionOccurred()) { env->ExceptionDescribe(); env->ExceptionClear();}

	if (!eventMethodName) 
  	{
	    // could not find this signature in list
  		// printf("Invoke: didn't find method name for dispatch id %d\n",dispID);
  		// this probably leaves a native thread attached to the vm when we don't want it
  		ThrowComFail(env, "Event method received was not defined as part of callback interface", -1);
  		
  		// should we detatch before returning?? We probably never get here if we ThrowComFail()
	    // jvm->DetachCurrentThread();
    	return S_OK;
	  }

	// find the class of the InvocationHandler
   	jclass javaSinkClass = env->GetObjectClass(javaSinkObj);
		if (env->ExceptionOccurred()) { env->ExceptionDescribe(); env->ExceptionClear();}
	//printf("Invoke: Got sink class\n");
    jmethodID invokeMethod;
    invokeMethod = env->GetMethodID(javaSinkClass, "invoke", "(Ljava/lang/String;[Lcom/jacob/com/Variant;)Lcom/jacob/com/Variant;");
		if (env->ExceptionOccurred()) { env->ExceptionDescribe(); env->ExceptionClear();}
    jstring eventMethodNameAsString = env->NewStringUTF(eventMethodName);
	//printf("Invoke: Got method name\n");
	// now do what we need for the variant
    jmethodID getVariantMethod = env->GetMethodID(javaSinkClass, "getVariant", "()Lcom/jacob/com/Variant;");
		if (env->ExceptionOccurred()) { env->ExceptionDescribe(); env->ExceptionClear();}
	//printf("Invoke: Found way too getVariant\n");