Mixed mode issues with COM

[andrew lowe]

Hi,

I want to create a mixed mode C++ dll that calls a COM object and returns a
managed string. I use the following steps but still get errors:
Create new C++ .Net Class library project
Add the #import directive to my managed objects header file: #import
"C:\Documents and Settings\alowe\My Documents\ePathwayRequestBrokerDev.dll"
rename_namespace("ePathwayCOM")
Add a new method:

System::String* Execute(String* serviceName, String* xml) {
BSTR service = (BSTR)(void*)Marshal::StringToBSTR(serviceName);
BSTR message = (BSTR)(void*)Marshal::StringToBSTR(xml);
ePathwayCOM::_esyv0004Ptr broker;
broker->exec(service, message);
Marshal::FreeBSTR((void*)service);
Marshal::FreeBSTR((void*)message);
return "test";
}

Follow the instructions in
http://support.microsoft.com/default...b;en-us;814472 to make the
necessary project property changes
Add the ManagedWrapper class as stated in the instructions in the link above
I then created a C# project to call the manged method however the
ManagedWrapper class is not available to be called (has disappeared
according to the C# project)
Calling System::String* Execute(String* serviceName, String* xml); fails
with a huge COM error

Can anyone point out any mistakes i'm making please. I'm extremely desperate
to get his working
Thanks a billion in advance

andrew