The OnKeyPress event is not called. If I connect this event to another component, it will fire.

I retested this. I cannot reproduce this. OnKeyPress is triggered here when typing characters into an enabled TAdvDBLookupComboBox.
If a problem persists, please provide sufficient details.

A Pokusy.zip (3.8 MB)

This project has dependencies to units we do not have installed here (like dbaccess, IBC, frxClass...
Please make sure a project to reproduce an issue relies only on standard VCL components and TMS components.

I was throwing it away. So I was blind. You can just delete it. It's not used anywhere.

A Pokusy.zip (3.3 KB)

The essence was that OnKeyPress was not triggered for the return key only, for all other keys it was triggered.
We fixed this particular case and this fix will be included in the next update.

I'm glad I helped make something better.