QFileIconProvider and OS support / Not using all icons on Linux

I have a QDirModel based file manager, and now it uses default QFileIconProvider. The result on OS X and Windows is very good (it uses real system icons). On Linux - KDE/GNOME - it uses only folder/text file icon. Question is - why on Linux it sucks/or what it needs to work as nicely as on other OS? :)

Windows:
http://images49.fotosik.pl/46/3dcaabac1c154976m.png

OS X:
http://images33.fotosik.pl/436/378913d8c931bc27m.png

Linux:
http://images43.fotosik.pl/46/ec0db27624a7998em.png

Probably because (at least one) of two things:
1. there is no single standard in placing default icons
2. there is no single standard in determining file types

There are standards but definitely not single and not respected on every system.

Well, everything except KDE3 uses XDG Desktop standards. KDE3 in terms of icons uses the same locations, but diffrent naming rules for its applications.

Everything is a strong word :)

Quote:

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Originally Posted by wysota

Everything is a strong word :)

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every non-geekish software :)