Obtaining application icons in Linux

Hi,

So QFileIconProvider works pretty well on Windows for grabbing icons executables, but seems not to do so on Linux. :( At least not on GNOME. Can anyone recommend a general way of asking the window manager or perhaps a query against a file of some type to obtain the icon for executables on Linux?

Thanks.

The answer is not trivial as each desktop system stores its icons elsewhere. For instance for KDE you would look into /usr/share/icons/default[.kde4]/32x32/mimetypes.

Thanks.

I don't mind it not being trivial. Just needed a starting point - which you provided.