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Use an ActiveX COM DLL within Delphi without .ocx?

Posted on 2004-11-01
Medium Priority
Last Modified: 2010-04-05
I have a component which is described as an ActiveX COM DLL. I would like to use the component with Delphi 7 to develop applications.
When I have used ActiveX components in the past, there has been a .ocx ActiveX control file which I have used with Component > Import ActiveX > Add to be able to see the component in a palette and add it to my application.
There is no mention of a .ocx file with this release anywhere in the documentation, nor can I find on the www a .ocx file or any guidance which would enable me to get to work. Can someone please fill in the knowledge gap and let me know either how to use this .dll or why it isn't possible?
Question by:shallimus
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Expert Comment

ID: 12466405
if this DLL includes type library, you can select
components -> import activex control -> add -> select your DLL

after your TLB will be added to TLB list, you will click "create unit" button,
as a result interface uniit will be created

if you will click "install" button, your activex will be installed in component palette

Author Comment

ID: 12468955
Thanks for your reply vadim_ti.
I tried adding the DLL, and received no error, but do not see the component in the list. I have looked through several times; it really isn't there. There is a .tlb file in the directory with the DLL.
Is there something I'm doing wrong, or not doing?

Author Comment

ID: 12469606
Or, another thought occurs: is there some way to manually add the TLB to Delphi's list, since it doesn't seem to add in the way it is supposed to?

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Accepted Solution

vadim_ti earned 2000 total points
ID: 12470841
You can use TLIBIMP utility

TLIBIMP yourLibrary.TLB

2 files will be created:


it will be delphi component and you can install it in regular way

LVL 22

Expert Comment

by:Mohammed Nasman
ID: 12471527

  ActiveX COM Dll is just Com Dll, don't use Import ActiveX menu to add reference to it, instead use Import Type Library from project menu


Author Comment

ID: 12471649
Thanks vadim. This was great and exactly what I needed. The component is now working in my IDE :)

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