Complete Class at Cursor Not Working

Had the exact same issue in XE2/Update 4. Did the following (without uninstalling AQTime) and it came back.

Tools > Options >Editor Options > Code Insight

Verified the Code Completion was checked (it was), then changed the Delay to Low (was set to None) > OK

Code Completion in my IDE started working again.

I was having the same problem in Delphi Berlin. None of the above worked for me. I also tried regenerating the .dproj file but that also did not help.

The one thing that has worked (so far) is installing the excellent IDEFixPack for Delphi Berlin. Delphi IDE Fix Pack

Please let me take this opportunity also for a quick moan. Code completion is an absolutely essential feature of Delphi and it is very slow and flaky at best. Embarcadero (if you are listening) - please focus on making these core features much more robust.

I had the same problem, but it was solved after uninstalling Smartbear AQTime from the windows uninstaller. (close Delphi first)

No need to reinstall Delphi.