Bug#578083: libqtgui4: non-KDE Qt apps do not use style engine

[Fathi Boudra <fabo@debian.org>]

On Thu, May 20, 2010 at 4:22 PM, Nik A. Melchior
<melchior+debian@cmu.edu> wrote:
> The advice on this forum fixes the problem for me:
>
> http://forums.opensuse.org/archives/sf-archives/archives-software/344041-how-can-i-set-qt4-theme-qtcurve.html
>
>> root@host # cd /usr/lib/qt4/plugins
>> root@host # ln -fs /usr/lib/kde4/plugins/styles styles
>
> Now QtCurve appears in qtconfig.

I understand now:
kde-style-qtcurve style plugin is installed as
/usr/lib/kde4/plugins/styles/qtcurve.so
Under KDE desktop, the QT_PLUGIN_PATH environment variable is expanded:
QT_PLUGIN_PATH=~/.kde/lib/kde4/plugins/:/usr/lib/kde4/plugins/

If you want your Qt applications able to use the plugin, you should
set QT_PLUGIN_PATH as appropriate in your Desktop environment.

Cheers,

Fathi