musescore/MuseScore — pull request #694 by Jojo-Schmitz (2014-02-10 11:34:31+00:00)
Title: Use flat and sharp symbols in tooltips and dialogs

Seems to work fine on Windows, if the compilers on Mac or Linux barf on the ♭ and ♯ we could use '\u2666d' resp. '\u266f'