I think there's a translation error here: I want to read the width of the characters. (Google translated :-))

I can determine the size of the characters. With FreeFonts, not all characters are the same width. An "i" is narrower than an "M".
Since I want to split my screen into two areas, the left part should not write in the right part. If I can read the width of the characters, I know when to start a new line.

How can I determine the width of a character from the freefonts? I tried: "M5. Lcd.width('W',myfont)
This reported that width is not known.

I'm flabbergasted. It really worked. The colors are okay now.
Thanks!

The display of my M5Stack (black) shows everything inverted or negative. Unfortunately the display remembers this setting. Also de-energizing, battery off and no USB, showed no change.
In the data sheet of the ILI9342 I found a point that gives me hope: "8.2.15. Display Inversion OFF (20h)".
Unfortunately I don't know how to call this command. I am using the Arduino IDE.
Can someone give me an example of the transfer of commands to the M5Stack?