public: class QSizeF __thiscall QFontMetricsF::size(int, class QString const &, int, int *)const

Mangled name

?size@QFontMetricsF@@QBE?AVQSizeF@@HABVQString@@HPAH@Z

Exported by

size	filename	version
3052032	Qt5Gui.dll	5.1.0.0