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Looks like part of the SQL framework in HTML components https://www.delphihtmlcomponents.com/

I also once wrote an article about IAutoComplete, for the C++Builder Journal. The archive of that article is on my website in the "Articles" section: Using Microsoft's Auto-Completion Framework

Will be available in next release.

Delphi 10.3.1 Enterprise with IDE Fixpack 6.4.2, DDevExtensions 2.85, GExperts 1.3.13.77, Bookmarks 1.6, Navigator 1.6, JCL, JVCL, ... When shutting down the 2nd instance of bds.exe, there is an access violation: Project bds.exe raised exception class $C0000005 with message 'access violation at 0x50067e88: read of address 0x122e72dc'. But after that bds.exe exits normal.

I only have the Community Edition, but I can't reproduce this. Delphi 10.3 Update 1 (26.0.33219.4899)

Totally agree on the lure of RAD UI design and how it causes newbies to write code that is both relying on states in the UI as well as in their business model, instead of the UI reflecting states from the internal model and delivering changes to that model. As far as possible, I try to write my code without a UI, and I try to make the interfacing between the internal business logic and the UI as simple as possible, with the UI as far as possible being oblivious about why its values and settings are what they are. I often have separate reusable classes as glue between the UI and the biz objects, so that they remain isolated. The debugger is not fine when you venture past 32-bit single UI thread. The 64-bit Delphi debugger leaves so much to be desired, that it is better to do the debugging in a 32-bit version of the app. Multi-threaded debugging - combined with anonymous methods - often causes also the 32-bit debugger to stop working - such as not resuming after a break, or no longer breaking where it was supposed to. Debugging code that runs multiple identical threads is a challenge as there is no simple way to specify that you only want to debug a specific thread instance.

There's not just VSC. Have a look at this: I honestly couldn't care less about the form designer. As horrible as it actually is, it's probably just too much work to completely rewrite it for another environment. Proper debugging capabilities are way more important.

We sure do, because this makes me cringe. Too much clutter. That said - I also hate the currently popular naked "flat UI" design philosophy which takes away most UI guidance and makes you guess if something is a link, a button, or just text - and you have to hover and/or click in the right places to find out.