public: bool __thiscall QWindow::isAncestorOf(class QWindow const *, enum QWindow::AncestorMode)const

Mangled name

?isAncestorOf@QWindow@@QBE_NPBV1@W4AncestorMode@1@@Z

Exported by

size	filename	version
3052032	Qt5Gui.dll	5.1.0.0