fixed scale label width
Merge branch 'master' of gitcafe.com:liuyanghejerry/painttyWidget
msvc2012 doesn't support “=delete”， use Qt macro instead.
Use switch to get error string.
update strings and translations.
rollback: no transparent color when picking.

Signed-off-by: liuyanghejerry <liuyanghejerry@126.com>
Merge branch 'master' of gitcafe.com:liuyanghejerry/painttyWidget into no_transparent