Method addEvent

src/lib/platform/XWindowsEventQueueBuffer.cpp:145–178

}

bool XWindowsEventQueueBuffer::addEvent(uint32_t dataID)
{
  // prepare a message
  XEvent xevent;
  xevent.xclient.type = ClientMessage;
  xevent.xclient.window = m_window;
  xevent.xclient.message_type = m_userEvent;
  xevent.xclient.format = 32;
  xevent.xclient.data.l[0] = static_cast<long>(dataID);

  // save the message
  std::scoped_lock lock{m_mutex};
  m_postedEvents.push_back(xevent);

  // if we're currently waiting for an event then send saved events to
  // the X server now.  if we're not waiting then some other thread
  // might be using the display connection so we can't safely use it
  // too.
  if (m_waiting) {
    flush();
    // Send a character through the round-trip pipe to wake a thread
    // that is waiting for a ConnectionNumber() socket to be readable.
    // The flush call can read incoming data from the socket and put
    // it in Xlib's input buffer.  That sneaks it past the other thread.
    ssize_t write_response = write(m_pipefd[1], "!", 1);

    // with linux automake, warnings are treated as errors by default
    if (write_response < 0) {
      // todo: handle read response
    }
  }

  return true;
}

bool XWindowsEventQueueBuffer::isEmpty() const
{