I'm trying to get the available space in a QListWidget in IconMode. When I call viewport().size(), it returns the the whole view including the scrollbar zone, which isn't actually usable. So I compute widget.size() - 2*frameWidth() - scrollbar.size() but with some styles there's a remaining space that I don't know how to measure...

Qt Code: 
  1. # style        widget  frame  scrollbar  viewport     ???
  2. Bespin          256      0        17        237        2
  3. CDE             256      1        13        239        2
  4. Cleanlooks      256      2        15        237        0
  5. GTK+            256      1        18        236        0
  6. Motif           256      2        16        232        4
  7. Oxygen          256      3        17        231        2
  8. Phase           256      2        16        236        0
  9. Plastique       256      2        16        236        0
  10. Polyester       256      1        16        238        0
  11. qtc_klearlooks  256      1        15        239        0
  12. QtCurve         256      2        15        237        0
  13. Skulpture       256      2        17        235        0
  14. Windows         256      2        16        236        0
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