Trying to light up my keyboard for notifications

[Phieyl]

I'm trying like hell to figure out a way to got my Logitech 915 keyboard to light up a certain way when I receive notification. I was thinking all I need for vrcx or the vrchat API to do is print out a log for invites where my C++ script interacting with my keyboard can scan periodically.

There a way I can do this?

[Myrkie]

this is far out of scope for VRCX, most of VRCX logic is within Javascript, only small parts of VRCX is Csharp you would have to find a compatible library.

desktop notifcations are handled here and can be triggered manually from the JS console with AppApi.DesktopNotification("Displayname", "Message", Image)

example being

AppApi.DesktopNotification("Hello from JS", "Hello world", null)

[Phieyl]

I was thinking just as long as I can get my c++ program to read the log output which is text, that would be good enough

[Myrkie]

VRCX doesn't provide log output anywhere in a parsed format besides storing some in the database, it reads it for only itself, if you want your C++ program to do that you would need to implement your own log reader or you would have to modify VRCX and convert your program to Javascript

[Phieyl]

Below is a full ParseLogNotification example we used previously, which appends any "invite" or "requestInvite" lines to a text file (e.g., C:\a\inviteLog.txt). It also logs info to VRCX.log via NLog so you can see if it’s actually running:

private bool ParseLogNotification(FileInfo fileInfo, LogContext logContext, string line, int offset)
{
    // 1) Check if it's a "[API] Received Notification: <" line
    if (string.Compare(line, offset, "[API] Received Notification: <", 0, 30, StringComparison.Ordinal) != 0)
        return false;

    // 2) Find the "received at " portion so we can isolate the notification's text
    var pos = line.LastIndexOf("> received at ", StringComparison.Ordinal);
    if (pos < 0)
        return false;

    // 3) Extract the substring containing the notification data
    var data = line.Substring(offset + 30, pos - (offset + 30));

    // 4) Check if the notification data includes "type: invite" or "type: requestInvite"
    if (data.Contains(" type: invite") || data.Contains(" type: requestInvite"))
    {
        // Optional: write a line in VRCX.log to confirm we recognized it
        logger.Info("Detected an invite line. Data={0}", data);

        try
        {
            // 4A) Append a line to your custom text file, e.g. "C:\a\inviteLog.txt"
            Directory.CreateDirectory(@"C:\a"); // ensure folder exists
            File.AppendAllText(@"C:\a\inviteLog.txt", $"{DateTime.Now}: {data}\r\n");
        }
        catch (Exception ex)
        {
            // If there's any file/permission error, log it
            logger.Warn(ex, "Failed to append invite log to C:\\a\\inviteLog.txt");
        }
    }

    // 5) Append to the *internal* VRCX log list (so normal code sees it)
    AppendLog(new[]
    {
        fileInfo.Name,
        ConvertLogTimeToISO8601(line),
        "notification",
        data
    });

    return true;
}

What This Does

• Checks if a line is [API] Received Notification: < ... >.
• Extracts the substring with the notification’s text.
• Looks for " type: invite" or " type: requestInvite".
• If found, it logs a line to VRCX.log (so you can confirm it fired) and appends to a local text file (e.g., C:\a\inviteLog.txt).
• Finally, it calls AppendLog(...) so VRCX will still process the line as normal.

Once you build and run VRCX with this code in LogWatcher.cs, you’ll have:

• Any invites also appended to C:\a\inviteLog.txt.
• A record in VRCX.log (found in %AppData%\VRCX\logs\VRCX.log) each time this code fires, so you can troubleshoot if no lines appear.

I can give you everything I tried so far. I've been using Gpt o1 to get me this far.

[Myrkie]

sorry but I wasn't volunteering in implementing this as I just provide support. In VRCX we have to weigh the cost of development time vs how much the feature would get used, this is a high amount of work which I can assume will be used by very little amount of people.

there is also the bigger issue of hardware, I don't own a Logitech keyboard so that would be rather troublesome to implement without a ability to test. however I am not the maintainer of VRCX and what is or isn't implemented is not my decision.

[TayouVR]

this would be 1000x easier and more reasonable going through the OpenRGB API, which supports all kinds of peripherals and can be implemented significantly easier than what you are trying to do.
If you wish to contribute this feature to VRCX consider reading into the documentation for OpenRGB and implementing the necessary API calls in the VRCX javascript. in the .Net part would also work, but the API is probably just standard web requests.

[Phieyl]

That's genius. I'll give it a shot!