Cisco Cisco Computer Telephony Integration Option 8.5 Developer's Guide

Microsoft’s ActiveX Template Library (ATL). To use ATL, include the 

standard COM header file: atlbase.h. 

In this manual, the syntax used to describe method calls in COM shows standard 
COM data types such as BSTR, VARIANT and SAFEARRAY. Be aware that 
depending on the development environment, tools, and the manner how the COM 
CIL is included in your project application, these data types can be encapsulated 
by wrapper classes proper to the environment. 

For example, in a Microsoft Visual C++ 7.0 project a VARIANT type can be either 
a CComVariant or _variant_t, and a BSTR type can be either a CComBSTR or 
_bstr_t.

For more information, see the documentation for your development environment.

Next, you must import the COM Dynamic Link Libraries into your C++ 
application. The following code sample (which you might put into your StdAfx.h 
file) depicts how to use a COM Dynamic Link Library in C++:

#import "..\..\Distribution\COM\ctiossessionresolver.dll" using namespace CTIOSSESSIONRESOLVERLib;

#import "..\..\Distribution\COM\ctiosclient.dll" using namespace CTIOSCLIENTLib;

You must register three DLLs, but you do not need to import the arguments.dll 
into your project since it is imported by the ctiosclient.dll type library.

COM objects in C++ are created via the COM runtime library. To create a COM 
object at run time, your program will need to use the CreateInstance() method 
call. 

// Create SessionResolver and Session object

hRes = m_pSessionResolver.CreateInstance    (OLESTR("CTIOSSessionResolver.SessionResolver"));