SDL_hid_device_change_count(3)

💖 SDL_hid_device_change_count 💖

okay so bestie, we're in the SDL3 FUNCTIONS corner of the manual and today's main character is SDL_hid_device_change_count(3). it's giving "is my USB situation different than last time??" energy and honestly? we're obsessed. 🎀

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✨ NAME ✨

SDL_hid_device_change_count — check to see if devices may have been added or removed. yes queen, a lil vibe check for your HID lineup. 🦋

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🌸 SYNOPSIS 🌸

#include <SDL3/SDL_hidapi.h>

Uint32 SDL_hid_device_change_count(void);

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💅 DESCRIPTION 💅

so like. enumerating the HID devices? expensive. it's a whole production, not a casual lil scroll. so instead you can call this function to see if there have been any system device changes since the last time you called it. lowkey genius. 🙈

now here's the tea: a change in the counter returned doesn't necessarily mean that anything has actually changed. it's just a "hmm maybe 👀" signal. but if you want the real updated list, you can call SDL_hid_enumerate() and get your fresh device lineup. slay.

also, calling this function for the first time may cause a thread or other system resource to be allocated to track device change notifications. so it's not just a free peek — the first call sets up shop. 🫶

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⭐ RETURN VALUE ⭐

returns a change counter that gets incremented with each potential device change. and if device change detection isn't available at all? you get 0. not me getting a zero and knowing the whole feature said "no 💀".

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🌈 AVAILABILITY 🌈

this function is available since SDL 3.2.0. periodt.

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👑 SEE ALSO 👑

• SDL_hid_enumerate(3) — go get that updated device list, bestie. 💜

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Simple Directmedia Layer — SDL 3.4.18 — and that's the whole SDL_hid_device_change_count(3) page, no cap. stay iconic, check your counters, and remember: a changed number isn't always a changed world. ✨🦋💖