🚀 go-pugleaf

Hi All:)
  I have a complicate (for my skills) problem..
I have a console apllication. It loads a dll that I wrote.
This dll works like a TCP Client. It creates a thread from within it 
receives data from a TCP connection.
The console application passes a callback function to the initialization 
function of the dll. Inside the dll's thread the callback is called to 
process the data received. All works fine if I call the callback 
function from within the thread.
But when I try to call it from a method called with Synchronize inside 
the thread, it stops working :( The not working code:

Inside the dll:

typedef void (*RECEIVETXTPROC)(char* Txt);
RECEIVETXTPROC OnReceiveTxt;

bool Initialize(char* ServerIPAddress,
                 int Port,
                 bool ActivateAsynchronousReception,
                 RECEIVETXTPROC OnReceiveCallback,
                 bool UseStartingDelimiter,
                 char StartingDelimiter,
                 char EndingDelimiter)
{
  ...
   OnReceiveTxt=OnReceiveCallback;
  ...
}

class TReceiverThread : public TThread
{
   public:
    AnsiString RvdTxt;
  ...
}


//the following class is responsable of creating and destroying the thread.

class AsynchronousReceiverClass
{
  private:
   TReceiverThread* ReceiverThread;
  ...
  public:
   void __fastcall ExecuteCallBack();
  ...
}

void __fastcall AsynchronousReceiverClass::ExecuteCallBack()
{

     if(OnReceiveTxt)
      OnReceiveTxt(ReceiverThread->RvdTxt.c_str() );

}
AsynchronousReceiverClass* AsynchRec=NULL;

void __fastcall TReceiverThread::Execute()
{
  ...
  RvdTxt=Txt;//Txt contains the received string
  //AynchRec is a global instance of AsynchronousReceiverClass
  Synchronize(AsynchRec->ExecuteCallBack);
  ...
}

//Inside the console application:

void OnAsynchReceiveCommand(char* Buffer)
{
// do stuff with the string
}

//the following is loaded from the dll
Initialize(ServerIPAddress,
                     Port,
                     false,
                     OnAsynchReceiveTxt,//callback for asynch reception
                     true,
                     '�',
                     '�'
                    );


if I just put the code written inside ExecuteCallBack() into the Thread 
all works fine, even if I think it's not thread safe :(
What should I do?
Thank U in advance,
Stefano B.