private: class QWinThumbnailToolButtonPrivate const * __ptr64 __cdecl QWinThumbnailToolButton::d_func(void)const __ptr64

Mangled name

?d_func@QWinThumbnailToolButton@@AEBAPEBVQWinThumbnailToolButtonPrivate@@XZ

Exported by

size	filename	version
468088	Qt5WinExtras.dll	5.9.9.0