Query the current event filter.
Defined in SDL_events.h
filter | the current callback function will be stored here |
userdata | the pointer that is passed to the current event filter will be stored here |
Returns SDL_TRUE on success or SDL_FALSE if there is no event filter set.
This function can be used to "chain" filters, by saving the existing filter before replacing it with a function that will call that saved filter.
This function is available since SDL 2.0.0.