Re: reserving a panel/taskbars space on the screen

["Francis (Grizzly) Smit" <grizzly smit id au>]

On 18/06/13 04:49, Francis (Grizzly) Smit wrote:
> Hi I'm trying to use gdk_property_change() to make my taskbar/panel I'm
> writing to reserve it's space on the on the screen so that when thing
> maximise they wont go beyond my widows boundary, does any one here know
> how to do this?? this is what I have worked out but it's wrong some how.
>
>       guchar data[4] = {0, 0, 0, height};
>       gdk_property_change(gdk_window,
> gdk_x11_xatom_to_atom(gdk_x11_get_xatom_by_name("_NET_WM_STRUT")),
> gdk_x11_xatom_to_atom(gdk_x11_get_xatom_by_name("CARDINAL")), 32,
> GDK_PROP_MODE_REPLACE, data, 4);
>
>
> thanks in advance for any help.
Got it it should be

gint32 data[4] = {0, 0, 0, height};

gdk_property_change(gdk_window, 
gdk_x11_xatom_to_atom(gdk_x11_get_xatom_by_name("_NET_WM_STRUT")), 
gdk_x11_xatom_to_atom(gdk_x11_get_xatom_by_name("CARDINAL")), 32, 
GDK_PROP_MODE_REPLACE, (guchar*)data, sizeof(gint32)*4);

but apparently this is the old way the modern way is

gint32 data2[12] = {0, 0, 0, get_height(), 0, 0, 0, 0, 0, 0, 49, 
m_refscreen->get_width()};
gdk_property_change(get_window()->gobj(), 
gdk_x11_xatom_to_atom(gdk_x11_get_xatom_by_name("_NET_WM_STRUT_PARTIAL")), 
gdk_x11_xatom_to_atom(gdk_x11_get_xatom_by_name("CARDINAL")), 32, 
GDK_PROP_MODE_REPLACE, reinterpret_cast<guchar*>(data2), sizeof(gint32)*12);

I'm working in Gtkmm anyway hope this helps some one some time the page 
that helped me was

http://standards.freedesktop.org/wm-spec/wm-spec-1.3.html#id2732272
   this shows both _NET_WM_STRUT and
_NET_WM_STRUT_PARTIAL      but it's somewhat cryptic basically these let 
you reserve a region a long  one side of the screen the rest of the 
values should be 0, so as not to reserve that region the second or newer 
one _NET_WM_STRUT_PARTIAL is preferred as it leaves the area's you don't 
want alone


>


--


  .~.     In my life God comes first....
  /V\         but Linux is pretty high after that :-D
 /( )\    Francis (Grizzly) Smit
 ^^-^^    http://www.smit.id.au/