NAME¶

SDL_hid_device_change_count - Check to see if devices may have been added or removed.

HEADER FILE¶

Defined in SDL3/SDL_hidapi.h

SYNOPSIS¶

#include "SDL3/SDL.h"

Uint32 SDL_hid_device_change_count(void);

DESCRIPTION¶

Enumerating the HID devices is an expensive operation, so you can call this to see if there have been any system device changes since the last call to this function. A change in the counter returned doesn't necessarily mean that anything has changed, but you can call

SDL_hid_enumerate () to get an updated device list.

Calling this function for the first time may cause a thread or other system resource to be allocated to track device change notifications.

RETURN VALUE¶

Returns a change counter that is incremented with each potential device change, or 0 if device change detection isn't available.

AVAILABILITY¶

This function is available since SDL 3.1.3.

SEE ALSO¶

•(3), SDL_hid_enumerate(3)