bool bDuplicateActorsInProgress
BDuplicateActorsOnNextDrag will not be set again while bDuplicateActorsInProgress is true. The user needs to release ALT and all mouse buttons to clear bDuplicateActorsInProgress.
bool bDuplicateActorsInProgress
BDuplicateActorsOnNextDrag will not be set again while bDuplicateActorsInProgress is true. The user needs to release ALT and all mouse buttons to clear bDuplicateActorsInProgress.