OpenVMS Connectivity Developer Guide

This document, the "OpenVMS Connectivity Developer Guide" (July 2000), serves as a technical guide for developers creating applications that interoperate between OpenVMS Alpha (Version 7.2-1) and Microsoft Windows NT (Version 4.0 SP3 or higher) environments. It focuses on three core areas:

1. COM for OpenVMS: It provides an overview of the Component Object Model (COM) and its implementation on OpenVMS, including installation and configuration, security aspects (NTLM authentication, domain issues, managing credentials), and development procedures (using MIDL compiler, Active Template Library (ATL), building, compiling, and linking applications). It also details various utilities (DCOM$SETUP, DCOM$CNFG, DCOM$REGSVR32) for managing COM applications and addresses known problems and limitations.

2. OpenVMS Registry: The guide explains the OpenVMS Registry, a hierarchical database compatible with the Windows NT Registry, used for storing system, software, and application configuration information. It covers registry concepts (keys, subkeys, values), its structure, security models, server management (including backup, restore, quotas, failover), and system services for programmatic interaction.

3. OpenVMS Events: It describes how OpenVMS handles Windows NT-style event logging, allowing applications to record informational, warning, and error messages that can be viewed using Windows NT Event Viewer, Advanced Server for OpenVMS Event Viewer, or an OpenVMS log file.

The document assumes developer familiarity with object-oriented concepts, COM development, and Windows NT registry. It also includes release notes, troubleshooting information, cookbook examples, details on supported APIs and interfaces, and instructions for running COM in an unauthenticated mode. Notably, it states that Windows 2000 is not supported in this version.