_TaskRetType_abi 968 modules/highgui/src/ppltasks_winrt.h typedef typename task<typename _TaskTypeTraits<typename _FunctionTypeTraits<_Function, _ReturnType>::_FuncRetType>::_TaskRetType_abi> _TaskOfType; _TaskRetType_abi 968 modules/videoio/src/ppltasks_winrt.hpp typedef typename task<typename _TaskTypeTraits<typename _FunctionTypeTraits<_Function, _ReturnType>::_FuncRetType>::_TaskRetType_abi> _TaskOfType;