Method init

MiniZincIDE/darkmodenotifier.cpp:47–103

};

void DarkModeNotifier::init()
{
    auto getDarkMode = [=] () {
        if (!_internal->ok) { return false; }
        DWORD value = 1;
        DWORD size = sizeof(DWORD);
        auto result = RegGetValue(_internal->hKey, nullptr, L"AppsUseLightTheme", RRF_RT_REG_DWORD, nullptr, &value, &size);
        if (result != ERROR_SUCCESS) {
            _internal->ok = false;
            return false;
        }
        return value == 0;
    };

    _internal = new Internal;

    // Get dark mode registry key
    auto result = RegOpenKey(HKEY_CURRENT_USER, L"Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize", &_internal->hKey);
    _internal->ok = result == ERROR_SUCCESS;
    if (!_internal->ok) { return; }

    // Get initial dark mode
    _darkMode = getDarkMode();
    if (!_internal->ok) { return; }

    // Setup event to be triggered on registry change
    _internal->hEvent = CreateEvent(nullptr, true, false, nullptr);
    _internal->ok = _internal->hEvent != nullptr;
    if (!_internal->ok) { return; }

    // Listen for event
    _internal->notifier = new QWinEventNotifier(_internal->hEvent);
    connect(_internal->notifier, &QWinEventNotifier::activated, this, [=] () {
        bool newDarkMode = getDarkMode();
        if (!_internal->ok) { return; }
        if (newDarkMode != _darkMode) {
            _darkMode = newDarkMode;
            emit darkModeChanged(newDarkMode);
        }
        _internal->ok = ResetEvent(_internal->hEvent) != 0;
        if (!_internal->ok) { return; }
        auto result = RegNotifyChangeKeyValue(_internal->hKey,
                                              true,
                                              REG_NOTIFY_CHANGE_NAME | REG_NOTIFY_CHANGE_LAST_SET,
                                              _internal->hEvent,
                                              true);
        _internal->ok = result == ERROR_SUCCESS;
    });

    // Start notifier
    result = RegNotifyChangeKeyValue(_internal->hKey,
                                     true,
                                     REG_NOTIFY_CHANGE_NAME | REG_NOTIFY_CHANGE_LAST_SET,
                                     _internal->hEvent,
                                     true);
    _internal->ok = result == ERROR_SUCCESS;
}