_DeregisterCancellation 2778 modules/highgui/src/ppltasks_winrt.h         void _DeregisterCancellation()
_DeregisterCancellation 3355 modules/highgui/src/ppltasks_winrt.h             _DeregisterCancellation();
_DeregisterCancellation 3355 modules/videoio/src/ppltasks_winrt.hpp             _DeregisterCancellation();