maemo.org - Talk - Switch off status area

Hi,
I'm trying to implement status area hide/show function in my app.

As i can see from hildon desktop sources, desktop process get notifications on all root window propirty changes. And in case _MB_CURRENT_APP_WINDOW atom is changed and its data != 0xFFFFFF status area should be hidden (see 'filter_property_changed' func.).

I'm trying to use that with following code:

Code:

static int hide_state_area(Display * display)

{



int data = 1;

    Atom atom = XInternAtom ( display, "_MB_CURRENT_APP_WINDOW", false );



    return XChangeProperty ( display,

            DefaultRootWindow(display),

            atom,

            (Atom) 19, //XA_INTEGER

            32,

            PropModeReplace,

            (unsigned char*)& data,

            1);

}

but without success.

What wrong with that code? Any other API to switch off status area?