Retrieves all pens that are connected to the system.
int *count);SDL_PenID* SDL_GetPens(
|count||The number of pens in the array (number of array elements minus 1, i.e., not counting the terminator 0).|
Returns A 0 terminated array of ::SDL_PenID values, or NULL on error. The array must be freed with ::SDL_free(). On a NULL return, ::SDL_GetError() is set.
Yields an array of ::SDL_PenID values. These identify and track pens throughout a session. To track pens across sessions (program restart), use ::SDL_GUID .
This function is available since SDL 3.0.0