PHP Guestbook. How to update the extension while keeping the original functionallity?

[Simo]

Hi Pablo,

Is there a way to create an extension with tabs and an iframe instead of the code being right on the page?

I was going to update PHP Guestbook[http://www.wysiwygwebbuilder.com/phpguestbook.html], add a reply, add option to use recaptchav3 and hcaptcha
but I can't figure out how to make it work the way it was originally designed.
It looks like the extension builder does not support creating an extension in the same way.

I need help, could you post an explanation on how I could create the extension to work as the original did?

[BaconFries]

It looks like the extension builder does not support creating an extension in the same way.

This is because the extension was not built / created using the "Extension Builder" it was made in C++ so no files are available to modify by yourself.

[Simo]

Is there any documentation on how to build extensions in C#?
I know this is a lot to ask but could I maybe get a source code for the extension?
If not I really hope that you can send me some explanation on how to start building extensions in C#.

[Pablo]

Sorry, there is no documentation about creating extensions in C++.
The C++ API is not public because these extensions have specific requirements, which could easily break the application's behavior if not implemented correctly.
You would not be able to build such an extension yourself without advanced knowledge of the internals of the software.

[BaconFries]

Is there any documentation on how to build extensions in C#?

Sorry there is no documentation on this.

I know this is a lot to ask but could I maybe get a source code for the extension?

Sorry the source code is not available as far as I am aware