Set the device handle to be non-blocking.
int SDL_hid_set_nonblocking(SDL_hid_device *dev, int nonblock);
|dev||A device handle returned from SDL_hid_open().|
|nonblock||enable or not the nonblocking reads - 1 to enable nonblocking - 0 to disable nonblocking.|
Returns 0 on success and -1 on error.
In non-blocking mode calls to SDL_hid_read() will return immediately with a value of 0 if there is no data to be read. In blocking mode, SDL_hid_read() will wait (block) until there is data to read before returning.
Nonblocking can be turned on and off at any time.
This function is available since SDL 2.0.18.