April 1999
Intermediate to advanced
502 pages
15h 5m
English
Content preview from Learning DCOMBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Chapter 8. COM in Cyberspace
In this chapter:
Almost everything on the Windows platform is built on top of COM. The technology is ubiquitous. In this chapter, we will take ourselves into the realm of COM and its coexistence with the Web. In order to successfully build and run the examples in this chapter, you should have the following software and environment:
The
OCRServercomponent, developed in Chapter 6, must be installed and registered on a server machine.Microsoft Peer Web Server 3.0, or greater, must be installed, and the WWW service must be running. You can verify this using the Microsoft Internet Service Manager (inetmgr.exe) utility.
You must have Microsoft Internet Explorer (IE) 3.0.2, or greater.
You must have the
Wang Image EditActiveX[81] Control, which is shipped with Windows NT 4.0 or greater.
Assuming that we have the preliminary requirements in place, we will develop a few ActiveX controls in this chapter. An ActiveX control is simply a COM object, because the only requirement for an object to be called an ActiveX control is that it implements the IUnknown interface. ActiveX controls live inside an in-process component (DLL or OCX) that can be dynamically loaded by an out-of-process component. This out-of-process server, which can be any EXE that implements the necessary interfaces, is specifically called an ActiveX container or simply a container. A perfect example of a container ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.