elite-dangerous-control-panel-4.cpp

// Get the states of the physical switches and write them to the Toggleswitch objects.
// Assuming for now that all global variables referenced here are declared and initialized.
void updateKeys() {
  if (!kpd.getKeys()) {
    return;
  }

  for (int i = 0; i < LIST_MAX; i++) {
    if (kpd.key[i].kchar == NO_KEY) {
      continue;
    }

    // Turn the key code (e.g. 'F') into a zero-based array index.
    int keyIndex = (int)kpd.key[i].kchar - keyOffset;
    KeyState state = kpd.key[i].kstate;

    if (state == PRESSED) {
      switches[keyIndex].currState = BUTTON_PRESSED;
    } else if (state == RELEASED) {
      switches[keyIndex].currState = BUTTON_RELEASED;
    }
  }
}