Is there any way to change the cursor width in the code editor?
On a 4K monitor, its almost impossible to see, and I never know in what line the cursor actually is.
Xojo (zoomed)
Other
On MacOS, you can change the cursors size with the COntrol Panels. Check if you are in a different OS.
Doh: on HiDPI / Retina, etc. (macoS, other OS ?), you can change the monitor displayed width/height.
There is no setting in the IDE to alter the insertion point size.
On Windows there might be a setting in the control panel that alters the system wide caret size. I dont know of one off the top of my head though.
On macOS and Linux its manually drawn by the IDE’s code editor so system level settings wont matter
EDIT : On Windows 10
Open Control Panel > Appearance and Personalization > Ease of Access Center > Make the Computer Easier to see
and part way down there is a setting for “Set the thickness of the blinking cursor”
The IDE appears to ignore this setting though
Xojo 2015r1: I was able to enlarge the Mouse Cursor (Arrow, Insertion) @ the macOS level and it keeps its size in the Xojo IDE / Code Editor.
The drawback is I clicked often outside of where I wanted, so I go back to the default value (far less visible in my Retina monitor @ 3360 x 2100)
My issues here is, that I cant see the cursor most of the time. It would be a great help when the line where the cursor is somehow has a different color, like in the 2nd. picture above.
You can change the cursor color in Options > Coding (Preferences > Coding on macOS)
Scroll down and there should be Code Editor Cursor Color
[quote=442854:@Norman Palardy]You can change the cursor color in Options > Coding (Preferences > Coding on macOS)
Scroll down and there should be Code Editor Cursor Color[/quote]
In the Xojo Preferences?
Sorry yes - Xojo preferences
Xojo Preferences > Coding > Syntax colors: Code Editor Cursor Color
but I don’t know if changing black to other color (for that thin line) will make a difference.
cuz I am not seeing it
ah… not
Preferences > Coding
but
Preferences > Coding - Syntax Colors 
yeah once on the right general pane I expect folks can poke around for themselves and find it
Its already black, but a 1 line wide cursor is just almost impossible on a 4k monitor.
Beside a wider cursor, there should be also a highlighting of the active line, that at least would help to find the cursor without magnifier glass 
On macOS, you can move fast the mouse and the Mouse Cursor is enlarged TEMPORARY, so you may see where it is.
Linux or WIndows: I do not know.
Another problem is, the cursor in Xojo (Windows) blinks only 5 times and then stop blinking and is steady, so you cant see it anymore. And when I scroll down with the cursor keys, I completely lost track where the cursor is.
To make it clear, I am NOT talking about the Mouse Cursor, but the input cursor.
From the keyboard, you can select some text
[quote=442906:@Guenter Kraemer]Its already black, but a 1 line wide cursor is just almost impossible on a 4k monitor.
Beside a wider cursor, there should be also a highlighting of the active line, that at least would help to find the cursor without magnifier glass :)[/quote]
What is your screen scale factor set to?
I already set it to 150%, but its still impossible to find the cursor
A highlighting of the active line is in my opinion the only solution.