Figuring out the window state

[Simon Fuhrmann <NightSlayer gmx de>]

Hello!

I'm trying to figure out the window state of my applications window
because keeping track of the state with variables is AFAIK not possible,
e.g. the WM may iconify a window on start up without raising the
appropriate signals. Asking the WM would be a solution to get the window
state.

I tried something like this:

Gdk::WindowState ws
    = this->get_screen()->get_active_window()->get_state();
std::cout << "WS: " << ws << std::endl;
if ((ws & Gdk::WINDOW_STATE_ICONIFIED) == Gdk::WINDOW_STATE_ICONIFIED)
  ...

But the window state is 0, i.e. ws == 0, which is wrong because the
window is iconified.

My question is now how to figure out the window state. I could not find
methods to do so.

Thanks,
Simon