_ScreenCorner
fBlankRect = _ScreenCorner(fBlankCorner, kBlankCornerSize);
fNeverBlankRect = _ScreenCorner(fNeverBlankCorner, kNeverBlankCornerSize);
BRect _ScreenCorner(screen_corner pos,
SetValue(_ScreenCorner(where));
SetValue(_ScreenCorner(where));
int32 _ScreenCorner(BPoint point) const;
SetValue(_ScreenCorner(where, (screen_corner)fPreviousCorner));
SetValue(_ScreenCorner(where, (screen_corner)fPreviousCorner));
screen_corner _ScreenCorner(BPoint point,