I don’t know if you have encountered a problem while using Keil, which is that even after enabling the switch during compilation, it compiles successfully but does not provide code suggestions. For example, in the following situation:

At first, I thought there was an issue with my environment. After checking the environment variables and finding no problems, I followed the advice online to enable this switch. I thought my keygen might be the issue, but later found out that the keygen was also functioning normally. However, it still didn’t work.

After searching for most of the information online, I finally discovered a post through my relentless efforts. It turns out that after using some cracking tools, you need to enable this switch in this location to have the code suggestion feature. If this feature is not enabled, there will be no code suggestions. This post is just a record of my findings.
The path to the switch is as follows::Edit->Configuration->Text Completion, and then check the options below as configured.

After checking this option, code completion was enabled, and the specific effect is as follows.
