[Qt-creator] R.I.P. for QPlainTextEdit in Qr Creator 17?

[Carel Combrink]

Hi,

I also tried updating my plugin yesterday (SpellChecker Plugin) and it
builds fine but I saw it does nothing when I install/test it.
This is probably the reason so thanks for the heads up.

my 2c: Although I appreciate that the developers of Qt Creator try to
improve the IDE and move forward, it is really sad (and frustrating) for me
as a plugin maintainer when stuff like this happens.
I don't use Qt Creator any more since it does not support my work
environment, not for the last 5 years at least, but I still try to
maintain my plugin as far as I can since a lot of people 'depend on it'
(big thanks to the community that does most of the maintenance and
upgrading the last few releases)
After trying to update it I saw it does not behave as expected and started
considering sunsetting the plugin since I don't have time to now go and
step through code to figure out why it is now silently failing.

A breaking change (compiler says no) would have been better in this case,
instead of a silent failure like this, at least I would know where to go
and fix stuff.

For plugin maintainers API stability is essential. I think VS Code should
be the new standard. I never have to wait for plugin maintainers to catch
up to make new plugin releases after a new version of the tool is released.
My guess is the Lua support in QtC is trying to solve this, but to be
honest I would rather sunset my QtC plugin and move it to VS Code instead
of porting it to Lua for an IDE I unfortunately can't use in my day to day.

Anyhow,
Glad you got yours working

On Thu, 19 Jun 2025 at 08:30, Henry Skoglund <henry at tungware.se> wrote:

> Hi, just updated to Qt Creator 17 and it looks good, however when
> rebuilding my Qt Creator plugin I got stuck for a bit with this failing:
>
>    auto pe =
> qobject_cast<QPlainTextEdit*>(EditorManager::currentEditor()->widget());
>
> For almost 15 years that statement served me well and it allowed for
> example setting a fatter cursor at Qt Creator start (useful on 4K
> screens) but today, it returns a nullptr :-(
>
>
> Instead, the new incantation for Qt Creator 17 (and onwards?) seems to be:
>
>    auto pe =
>
> qobject_cast<Utils::PlainTextEdit*>(EditorManager::currentEditor()->widget());
>
> After that fix, it's smooth sailing (Utils::PlainTextEdit behaves 100%
> compatible with QPlainTextEdit).
>
> But if there was a bit of documentation of this new class in the Utils::
> Namespace I would be even more happy!
> Rgrds Henry
>
> --
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> Qt-creator at qt-project.org
> https://lists.qt-project.org/listinfo/qt-creator
>
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