Cisco Cisco Computer Telephony Integration Option 8.5 Developer's Guide

Building a custom Win32 (Console or Windows) CTI application in Visual C++ 
7.1(1) with COM requires knowledge of creating and using COM components in 
Microsoft Visual C++ 7.1(1). Client applications of this type tend to be more 
complex to build, but more powerful and faster in execution, than scripting clients 
(i.e. Visual Basic). All of the CIL components for COM are distributed as COM 
Dynamic Link Libraries (COM DLL). 

In order to be accessible to COM containers, including Microsoft Visual C++ 
7.1(1), COM components must be registered with Windows. The components that 
you will require for programming in Microsoft Visual C++ 7.1(1) are:

CTI OS Client library (CTIOSClient.dll). This is the main CIL library for 

COM. The objects available in this library are described  fully in Chapters 8 
through 11.

CTI OS Arguments Library (arguments.dll). The Arguments helper class is 

used extensively in CTI OS, and is described fully in 

CTIOS Session Resolver (ctiossessionresolver.dll). This object allows 
multiple applications or controls to use a single CTIOS Session object. It is 
required when building an application that will include the CTIOS ActiveX 
controls. 

To make use of these objects in your CTI application, your application must 
support COM. To add COM support to your application, you must use one of the 
following:

Microsoft Foundation Classes (MFC). The following header file are required 

for MFC applications to use COM: afxwin.h, afxext.h, afxdisp.h, and 
afxdtctl.h. If you build an application using the Microsoft Visual C++ 7.1(1) 
application wizard, these files are included for you automatically.