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(This is the documentation for SDL3, which is under heavy development and the API is changing! SDL2 is the current stable version!)


Set the device handle to be non-blocking.


int SDL_hid_set_nonblocking(SDL_hid_device *dev, int nonblock);

Function Parameters

dev A device handle returned from SDL_hid_open().
nonblock enable or not the nonblocking reads - 1 to enable nonblocking - 0 to disable nonblocking.

Return Value

Returns 0 on success or a negative error code on failure; call SDL_GetError() for more information.


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 3.0.0.


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