Sometimes the information about a name appears when the mouse is over a name. Sometimes it doesn't. I don't know what makes it break.
Also, when the hover mouseover doesn't work, the right-click go to definition also breaks.
If you mean in the IDE while viewing a sketch, you need to do a verify in order to get full functionality. Also you must have turned on the feature in preferences.
My sketch compiles. I am running IDE 2.3.4 on Mac. I don't see a setting for this feature. My target is Raspberry Pi Pico W. The mouseover feature does work on a new sketch and it has worked on my bigger sketch but doesn't now.
HI @DannySwarzman. Please provide detailed instructions we can follow to reproduce the problem.
Make sure to include the full contents of a sketch that causes the fault, and instructions for exactly which object in the sketch to hover.
There is one in the Arduino IDE advanced settings. The setting is named "Editor › Hover: Enabled".
I thought 'advanced settings' was the other one in prefs. Turns out I already had it turned on.
Do you mean the "Editor Quick Suggestions" option in the standard preferences (i.e., File > Preferences)? If so, that controls whether the auto complete menu will appear automatically while you are typing:
https://docs.arduino.cc/software/ide-v2/tutorials/ide-v2-autocomplete-feature
The "Editor Hover" feature that isn't working reliably for @DannySwarzman is a different feature from the "Suggestions" feature that is configured via the "Editor Quick Suggestions" option.
To me they are all 'magic' having started programming in assembler using formatted pads of paper to be sent to the keypunch department these modern editors are a joy. I do wish there was more colorization both in the editor and in printouts, I actually use another editor just to do a print. Yes, I still print stuff, screens are too low bandwidth unless you rotate the 90 degrees.
I am of a certain age where my peers understand that I may say one thing but mean something else and we both understand due to the context. Just one of the benefits of actually being in the same room as someone I am talking to.
Rant off
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