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

SDL_hid_set_nonblocking

Set the device handle to be non-blocking.

Header File

Defined in SDL_hidapi.h, but apps should use #include <SDL3/SDL.h>

Syntax

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.

Remarks

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.

Version

This function is available since SDL 3.0.0.

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CategoryAPI, CategoryAPIFunction

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