[Development] Can QImage format plugins require QGuiApplication?
Giuseppe D'Angelo
giuseppe.dangelo at kdab.com
Tue Apr 14 01:25:00 CEST 2020
Il 13/04/20 18:50, Kevin Kofler ha scritto:
> Today, a user on #fedora-kde ran across a crash which resulted from:
> * a GTK+/GNOME application (Jami) using (for some reason) QImage to load
> images, without a QGuiApplication or QApplication constructed, vs.
> * a QImage format plugin (QtPBFImagePlugin) using font APIs that require
> QGuiApplication and abort otherwise.
>
> Obviously, one or the other must be wrong. So, who is to blame?
The golden rule is that you're not allowed to touch any Qt API without
creating a Q*Application object first, unless the documentation says
otherwise.
HTH,
--
Giuseppe D'Angelo | giuseppe.dangelo at kdab.com | Senior Software Engineer
KDAB (France) S.A.S., a KDAB Group company
Tel. France +33 (0)4 90 84 08 53, http://www.kdab.com
KDAB - The Qt, C++ and OpenGL Experts
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