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

[From: Kimmo Hämäläinen]

On Wed, 2009-03-25 at 09:14 +0100, Hamalainen Kimmo (Nokia-D/Helsinki)
wrote:
> 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?

BTW. another, perhaps a simpler, way with SDL is to track the FocusOut
and FocusIn events. I think our pre-installed games do that. So when
your window has the focus, run it, otherwise keep it paused.

BR; Kimmo

> 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,
> > 
> 
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