Return the current capacity of the category registry of this logger manager. A capacity of 0 implies that no limit will be imposed; otherwise, new categories may be added only if numCategories() < maxNumCategories(). Note that 0 < maxNumCategories() < numCategories() is a valid state, implying no new categories may be added.
Declared in <ball_loggermanager.h>
int
maxNumCategories() const;