How to Verify Activex Reference Entity?
lazarus / 34-Windows

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loaded · 2021-12-31 08:46

Hi All,
After installing the LazActivex package in Lazarus;
With the Tools-> Import Type Library option, we can see Activex
References in another application.

If I want to do the above process in my own application without an
IDE, how should I proceed?
Or can I at least verify that the Exe application contains an Activex
Reference?

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PascalDragon · 2021-12-31 14:45

The code essentially iterates the registry. Take a look at the
ImportTypelib unit of the LazActiveX package (which is what provides
that menu entry).

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loaded · 2021-12-31 16:01

Thank you for reply PascalDragon
Quote from: PascalDragon on December 31, 2021, 03:45:39 pmThe code
essentially iterates the registry.
I'm surprised, I didn't expect this at all. But for this, does not the
Exe application need to be registered with the regsvr32 application?
In this case, how to read an Exe that has never been registered

Quote from: PascalDragon on December 31, 2021, 03:45:39 pm Take a look
at the ImportTypelib unit of the LazActiveX package (which is what
provides that menu entry).

Yes, you are right, it would be useful to examine it...

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PascalDragon · 2022-01-03 12:50

Quote from: loaded on December 31, 2021, 05:01:29 pmQuote from:
PascalDragon on December 31, 2021, 03:45:39 pmThe code essentially
iterates the registry.
I'm surprised, I didn't expect this at all. But for this, does not the
Exe application need to be registered with the regsvr32 application?
Correct.

Quote from: loaded on December 31, 2021, 05:01:29 pmIn this case, how
to read an Exe that has never been registered
You can't. COM is working together with the registry. If your COM
server not registered in the registry then there is no way for another
COM application to find it. And the information to register it in the
registry can be generated on the fly during installation (e.g. this is
what the ComServer unit does).

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loaded · 2022-01-04 16:34

PascalDragon,Many thanks for the enlightening information.