My, you are a font of interesting ideas.
What use did you imagine for this?
There is no driver action to turn LEDs on/off. Though it's not the first time I've heard a request for it.
There is an API function in the old SDK (SiSetLEDs). You'd have to write code.
I haven't tested it in years, but it looks like it would still work.
Now that I think about it, I also have an external program that will do that if you want to try it. But I don't think you can spin up a new program in 0.1s.
You can also do it by changing cfg files, but the driver is not likely to react to your file change in such a short time.
The behavior may not be predictable with wireless devices, since they turn off their LEDs after a short time to save power.
I do not have any specific goal for LED control, just thinking several tiny personal stuffs.
I've checked SDK(or API),
but most of them are not familiar with me.
Do you happen to have any quite simple one for me to test and learn it through step by step method ?
Should you recommend one, I'd really appreciated with it.
- I could handle elementary level of C# though, no knowledge in C++ at all.
Using "cfg" file as a whole is a.. brilliant workaround.