> Just a short lock at the numbers...
> 
> Qt4.6            1.45 GB (~31.000 files)
> wxWindows 2.9    0.20 GB (~24.000 files)
> VCL D2009        0.05 GB (~ 1.200 files)

.... and your point is? The VCL (especially the 'visual' part) just
wraps a more fundamental API, so of course it's going to be much
smaller than the other two. As for QT vs wxWindows, well doesn't the
former provide a rather more high level interface for its consumers? If
so, then again, one would expect it to be bigger.