[amrufon]

Hello.

Backgrounder first. I'm a VB programmer who's trying out ICE with VB so that I can integrate it with our applications. You can categorize me as a newbie with regards to C++. Also, this post is in connection with Using ICE with Single Threaded DLL post.

Ok, now with the problem:
1.) I created a VB ActiveX DLL which only has one interface. A function wich accepts a string and returns a string. Pretty simple.
2.) I made the following slice definition to support the DLL.

interface jSockets
{
string jclCommand(string command);
};

3.) I then proceeded to make a client and a server classes to manage the connection. Here is a code snippit on the server:
jSocketsI.h

#include <jSockets.h>
#include <IceUtil/Mutex.h>

#define INITGUID
#import "..\jIceServer\bin\jIceServer.dll"
#include "icrsint.h"

using namespace jIceServer;

class jSocketsI : public jSockets {
public:
virtual ::std::string jclCommand(const ::std::string& command, const Ice::Current&);
jSocketsI();
~jSocketsI();
private:
bool initialize();
_jServerPtr pjServer;
IceUtil::Mutex _jServerMutex;
};

jSockets.cpp

#include "stdafx.h"
#include "jSocketsI.h"

using namespace std;

std::string jSocketsI::jclCommand(const ::std::string& command, const Ice::Current&) {
// Make sure that were thread safe
IceUtil::Mutex::Lock lock(_jServerMutex);

// Declare used variables
std::string retval;
_bstr_t data = command.c_str();

// Call the J Object and get the return parameter
retval = pjServer->jclCommand(data);

// Return the values
return retval;
}

bool jSocketsI::initialize() {
// Make sure that were thread safe
IceUtil::Mutex::Lock lock(_jServerMutex);

// Make sure that were connected
CoInitialize(NULL);
pjServer.CreateInstance(__uuidof(jServer));

// Return that all is well
return true;
}

jSocketsI::jSocketsI() {
// Initialize the COM environment, this
// extra call ensures that the Adapter Class will
// not go out of scope.
initialize();
}

jSocketsI::~jSocketsI() {
CoUninitialize();

Just for completeness, here's the code for the main application
IceServer.cpp

#include <Ice/Ice.h>
#include <jSocketsI.h>

using namespace std;

class IceServer : virtual public Ice::Application {
public:
virtual int run(int, char* []) {
// Server code
Ice::ObjectAdapterPtr adapter = communicator()->createObjectAdapterWithEndpoints("jclCommandAdapt er", "default -p 7012");
Ice::ObjectPtr object = new jSocketsI;
adapter->add(object, Ice::stringToIdentity("jclCommand"));
adapter->activate();

// Wait until all operations are completed
communicator()->waitForShutdown();
if (interrupted()) {
cerr << appName() << ": received signal, shutting down" << endl;
}
return 0;
};
};

int main(int argc, char* argv[]) {
IceServer app;
return app.main(argc,argv);
}

This code will actually compile and run but the problem is that when the clients connects and actually calls the "jclCommand", it will fail with an access violation in the code:

// Call the J Object and get the return parameter
retval = pjServer->jclCommand(data);

I don't know what to do anymore. I'm close to just giving up and walking away.

Any help?

Thanks.

Alex