IR-PC-HID-Remote/src/IR-PC-HID-Remote/handleHoldButtons.ino

void handleHoldButtons_loop() {
  if (holdButton_lastTriggeredMillis > 0) {
    if ((millis() - holdButton_lastTriggeredMillis) > holdButton_releaseTimeout) {
      releaseAllKeys();
      holdButton_lastTriggeredMillis = 0;
      if (useSerial) {
        Serial.println(F("KEY RELEASED"));
      }
    }
  }
}

void releaseAllKeys() {
  BootKeyboard.releaseAll();
}