Method setProtocols

src/SFML/Window/Unix/WindowImplX11.cpp:1582–1643

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void WindowImplX11::setProtocols()
{
    using namespace WindowImplX11Impl;

    static const auto wmProtocols = getAtom("WM_PROTOCOLS");

    if (!wmProtocols)
    {
        err() << "Failed to request WM_PROTOCOLS atom." << std::endl;
        return;
    }

    std::vector<Atom> atoms;
    static const auto wmDeleteWindow = getAtom("WM_DELETE_WINDOW");

    if (wmDeleteWindow)
    {
        atoms.push_back(wmDeleteWindow);
    }
    else
    {
        err() << "Failed to request WM_DELETE_WINDOW atom." << std::endl;
    }

    if (isFeatureSupported("_NET_WM_PING") && isFeatureSupported("_NET_WM_PID"))
    {
        static const auto netWmPing = getAtom("_NET_WM_PING");
        static const auto netWmPid  = getAtom("_NET_WM_PID");

        if (netWmPing && netWmPid)
        {
            const long pid = getpid();

            XChangeProperty(m_display.get(),
                            m_window,
                            netWmPid,
                            XA_CARDINAL,
                            32,
                            PropModeReplace,
                            reinterpret_cast<const unsigned char*>(&pid),
                            1);

            atoms.push_back(netWmPing);
        }
    }

    if (!atoms.empty())
    {
        XChangeProperty(m_display.get(),
                        m_window,
                        wmProtocols,
                        XA_ATOM,
                        32,
                        PropModeReplace,
                        reinterpret_cast<const unsigned char*>(atoms.data()),
                        static_cast<int>(atoms.size()));
    }
    else