private: class QRectF __thiscall QTextDocumentLayout::doLayout(int, int, int)

Mangled name

?doLayout@QTextDocumentLayout@@AAE?AVQRectF@@HHH@Z

Exported by

size	filename	version
3052032	Qt5Gui.dll	5.1.0.0
5978744	Qt5Gui.dll	5.14.2.0