simple example of SIMBL plugin drawing overlays over Finder's icons.
This is a simplest possible starter. Plugin draws small, red rectangle over icons for files with filename starting with letter 'A'. Not much, but such example was highly requested. Works under Mac OS X 10.7.
There is over 16 warnings, mostly from my old and not updated Finder.h. Feel free to clean it if you're nervous about them.
Copyright (c) 2012 Leszek Niedziela
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