€ character cannot be entered

[Tragen]

• I have read the FAQ.
• I have searched in existing issues.

Environment

• OS: Windows
• scrcpy version: 1.18
• installation method: Windows zip
• device model: OnePlus 7T
• Android version: 11

Describe the bug
When I'm writing a text, everything works, except the € character.
When I press ALTGR+E or CTRL+ALT+E, I get this error in the console.

On errors, please provide the output of the console (and adb logcat if relevant).

[server] WARN: Could not inject char u+20ac

[rom1v]

Yes, unfortunately, Android does not support injecting non-ASCII chars on text injection.

It's the same with adb shell input text €.

https://github.com/Genymobile/scrcpy/blob/master/FAQ.md#special-characters-do-not-work
Duplicate of #37.

[Tragen]

Are you sure? ASCII doesn't include öäüß and I can enter it.

[rom1v]

See https://blog.rom1v.com/2018/03/introducing-scrcpy/#handle-accented-characters for explanation.

[Tragen]

Thanks. I hope this can be fixed in the future.

[rom1v]

Fixed by #2632.

Refs #37 (comment)

[l1m3r]

AFAIKT this isn't fixed at all with #2632
For Linux yes but not for Windows if you require mirroring mode.
I couldn't find any way to enter €, µ, ² or ³ - not even in --otg --hid-keyboard mode.

Tried

1. -otg --hid-keyboard -> no mirroring :-(
2. --serial=<....> because of Add HID keyboard simulation via USB HID over AoAv2 #2632
3. --prefer-text -> doesn't work.
4. --raw-key-events -> doesn't work.

Changing the language of the physical OTG keyboard didn't help either.
With 4. I can't get anything else but the English keyboard layout...

[rom1v]

@l1m3r Yes, unfortunately, € could not be injected from the Android API. I'm also annoyed by that.

With scrcpy --hid-keyboard (scrcpy -K, without --otg), it works, but not on Windows because we can't access USB if adb already uses it (on other platforms this is not a problem).

[l1m3r]

Maybe there's a way around it - One can enter € and so on via copy/paste.

1. [server] WARN: Could not inject char u+20ac
2. disable clipboard-sync temporarily (if it's used).
3. store clipboard content of device temporarily.
4. set device clipboard to just the character from 1. and paste it.
5. restore 3.
6. re-enable 2.

Maybe pausing input during that ^^ (I guess it takes longer than the normal input methods).

[rom1v]

@l1m3r I tried something similar in the paste #1426 but I abandoned the idea (see the thread).