On Wednesday 10 Jun 2020 00:52:16 Albert Astals Cid wrote:
> As far as I can see QFileDialog only supports listing by file extension.
> 
> On the other hand it seems in GTK+ land you can get an open file dialog
> listing by mimetype, so I've got one bug about "you're worse than XXX
> because you can't do this"
> 
> Is there something we could do at the KDE Frameworks level to support this
> feature?
> 
> Or should this be done in Qt?

KFileCustomDialog lists by mimetype.

-- 
David Jarvie.
KDE developer.
KAlarm author -- http://www.astrojar.org.uk/kalarm