[maemo-developers] detect window iconified/maximized in SDL

[From: Kimmo Hämäläinen]

On Tue, 2009-03-24 at 22:23 +0100, ext W. de Hoog wrote:
> Hi,
> 
> I would like to detect when an SDL application gets iconified. Than I 
> can pause it to save power. In theory the SDL_ACTIVEEVENT should be 
> generated and event.active should give me the info I need however I do 
> not get these type of events.
> 
> Anybody know of how to get the correct events or another way to detect 
> the iconification?

In Diablo, you can probably receive notification when WM_STATE changes
to IconicState
(WM_STATE is described in
http://tronche.com/gui/x/icccm/sec-4.html#s-4.1.3.1)
somehow with SDL.

In Fremantle, we are not using the iconic state and you need to track
_MB_CURRENT_APP_WINDOW property on the root window to see if you are
visible. I think SDL knows nothing of this property, but maybe the
support could be added there...

-Kimmo

> 
> regards,
>