A Real-Time VB6 ActiveX News Control
A while back, Mitchell wrote an article about MoreOver.com and their XML news sources (which are free for developers using them for non-profit purposes). Today, Mitchell takes that idea one step further and creates an ActiveX component that uses the MoreOver.com news feeds in a similar way. The component uses the XMLHTTP library and the MSXML parser to retrieve and process the news. This article also acts as a good introduction to ActiveX controls if you have never created one before.
Avoiding Circular References: WeakReference in VB-Classic
There is a nice new feature in VB.NET called "WeakReference". With this you can store a reference to an object without inhibiting the destruction of the object. This article should outline, how "weak references" can be implemented in VB 5/6.
Circular Referencing to COM Objects
This tutorial shows you how to fool Visual Basic in a way it will permit the programmer use circular references, like a Parent property without locking the parent object in memory.
Creating An XML Based Cache
In this article I will demonstrate how to create an XML based cache system in COM using Visual Basic. This COM object is using the function Save in ADO to create XML based recordsets.
Creating Classes & ActiveX Controls
An extensive article on how to create your own ActiveX controls and Class modules. How to use properties, specifying when they can be changed, and validating them. Methods, and how to create public co
Creating Visual basic components for ASP
A simple tutorial on creating reusable COM in VB as dlls and
call them in your ASP code. Learn to hide your code, and
increase the persormance..
Discover COM. Realtime feed for Excel
This article will demonstrate how to build and use a COM Add-In using Visual Basic. An usefull sample is also provided.
Eliminate VB COM+ Bottlenecks
In this article, I describe how a particular (and not uncommon) COM+ scenario can mean major performance loss on Windows 2000 (but not necessarily on NT4)
How to use a sync/async Retrieve HTTP component in your ASP & VB projects.
This article shows how to create one ATL COM component using the WinInet functions, how to use it in ASP programs and how to test it from the Visual Basic client. It also shows how to use multithreading support in this component.
IIS and COM Components: troubleshooting guide & tutorial
Ok, so you want to stop being a wannabe programmer punk and
decided to move into real development by making a couple of
COM/VB components that you could use in your ASP development.
Congratulations, it's a scary move but rewards are great. The
best reward: you can debug the components straight from your VB
IDE - no more Response.Write insanity. So now you've created
your first component, you clicked Run (btw, calling the Run
button 'Play' is a dead giveaway that you are fresh from the
ASP refugee camp), and went to your URL. And this is where the
troubles start.
Plugin Architecture /Exposing Objects in VB
This sample will teach you how to expose classes from an
ActiveX EXE to other applications, effectively creating a
plugin architecture.
ServerSide HTML ListBox Component for COM Developers
For those of us who completely ditched ASP in favor of compiled VB COM objects, life has been made a lot less aggravating. One side effect of the move away from ASP is the need to generate various listboxes (the select.../select variety) in code. Since most listboxes are pretty much the same, it stands to reason that a reusable class is needed that generates HTML listboxes quickly and easily. It further stands to reason that since we all know and love the way the standard listbox works, why not emulate that interface.
Writing Your First COM Component, Part 2
In this part, we'll get our component to leverage COM+/COM services (to fully leverage COM+, you must use the COM+ Library). This quick-step guide will show you how to complete the transformation from your typical DLL to a full-fledged COM component.
Writing Your First COM Components, Part 1
With all of the buzz surrounding COM+ components and n-tier applications, you're probably eager to get in on all the hype by learning how to build your first COM component. This short guide steps you through the process of creating your first component in minutes. Prior to developing in COM, let's understand the benefits of COM components.
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