Allocate a set of user-defined events, and return the beginning event number for that set of events.
int numevents);Uint32 SDL_RegisterEvents(
|numevents||the number of events to be allocated|
Returns the beginning event number, or (Uint32)-1 if there are not enough user-defined events left.
Calling this function with
numevents <= 0 is an error and will return (Uint32)-1.
Note, (Uint32)-1 means the maximum unsigned 32-bit integer value (or 0xFFFFFFFF), but is clearer to write.
This function is available since SDL 2.0.0.