HelenOS sources

wdecor_corner_h   964 uspace/lib/ui/src/wdecor.c 	ctop = (pos->y < wdecor->rect.p0.y + wdecor_corner_h);
wdecor_corner_h   965 uspace/lib/ui/src/wdecor.c 	cbottom = (pos->y >= wdecor->rect.p1.y - wdecor_corner_h);
HelenOS homepage, sources at GitHub