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Hi all,
I use VB6 and I need to create applications and plugins for it. Please show me a way to do this. Can you help me with a demo using VB6.
Thanks in advance.
Posted
Updated 11-Feb-11 2:25am
v3
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Solution 1

This[^] might help.
   
Comments
Andrewpeter 12-Feb-11 2:50am
   
Thanks, this is my need, vote 5.
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Solution 2

Check the MSDN[^]. If you can't create a simple application, extending one will be problematic.

[Edit: Moved link from comment]
Writing Pluginbased Applications
   
v2
Comments
Nish Nishant 11-Feb-11 8:06am
   
That link is not for VB6.
Bassam Abdul-Baki 11-Feb-11 8:19am
   
You're right. This <a href="http://www.developerfusion.com/article/4371/writing-pluginbased-applications/">link</a> has a source code example in VB.Net. Looks to me like VB6 articles are slowly disappearing.
Nish Nishant 11-Feb-11 8:52am
   
Yeah again VB.NET is different from VB6. VB6 is native code, so I think COM or a a DLL based approach would be his best bet. None of these .NET approaches will help him with that.
Bassam Abdul-Baki 11-Feb-11 8:57am
   
True, but maybe he can convince whoever to switch to .NET.
Andrewpeter 12-Feb-11 2:52am
   
I need app and plugin in VB6, however thank for your sharing, I'll convert it to VB6.
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Solution 3

If you want a 100% VB6 solution you'd have to use COM. Define the COM interface in one VB6 DLL, and then app references this DLL. Now any plugins you write will also be COM DLLs that implement this DLL. The app then loads these plugins via the COM interface. The plugins may need to be added to a specific registry key so the parent app can enumerate them.

If a mix of VB6 and C/C++ will work for you, you can have a C based plugin model. Just export some well-known (pre-decided) function names in the C DLLs (function exports), and then VB6 can P/Invoke these DLLs and invoke these well known functions (P/Invoke is not the right term, I forgot what it used to be called in VB6).
   

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