[Qt-creator] Designer plugin not loaded

[Olivier B.]

Thanks, the About menu indeed appears when i have a ui file open.
The error is actually "Failed to extract metadata". Am i right to
assume that it's because metadata of my plugin is now in CBOR and not
JSON format in Qt 5.12 (i used 5.11.1 before)?
https://github.com/qt/qtbase/commit/d9766ddc3d525cf08acec4c3483e61d86c9899a8

Le lun. 25 févr. 2019 à 10:12, Riitta-Leena Miettinen
<Riitta-Leena.Miettinen at qt.io> a écrit :
>
> Hello,
>
>
>
> Not much has changed in Qt Designer for a while. The menu item you referred to is available in the Qt Designer integrated into Qt Creator. That means, it becomes visible when you open a .ui formin Qt Creator (that is actually opened in the integrated Qt Designer). This works for me in 4.9, at least. I’ll try to make this clearer in the docs.
>
>
>
> Cheers,
>
>
>
> Leena
>
>
>
>
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> Leena Miettinen
>
> Sr. Documentation Engineer
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> The Qt Company GmbH
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> From: Olivier B.
> Sent: Freitag, 22. Februar 2019 17:23
> To: qt-creator at qt-project.org
> Subject: [Qt-creator] Designer plugin not loaded
>
>
>
> QtCreator used to load my custom widgets plugin. for this, i append to
> QT_PLUGIN_PATH the path containing designer/libMywidgets.so
> But this does not work anymore.
> Looking at strace, i can see that the additional Qt_PLUGIN_PATH is
> also scanned for other Qt plugin types, but not for designer plugins.
> Even qtcreator's designer plugins folder is not scanned according to
> the trace.
> Help online also suggests going to look in Tools/Form Editor / About
> designer plugins, but this menu entry does not exist
> This is in 4.7.0, and 4.8.0 seems to do the same. Did designer plugins
> usage change?
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