public: class QPushButton * __thiscall QMessageBox::addButton(enum QMessageBox::StandardButton)

Mangled name

?addButton@QMessageBox@@QAEPAVQPushButton@@W4StandardButton@1@@Z

Exported by

size	filename	version
4297216	Qt5Widgets.dll	5.1.0.0

Imported by

size	filename
3318784	ExtensionLayer.dll
12921592	MEGAsync.exe
658736	IPHiderPro.exe