Re: Trapping user shutdown/logout/restart in Cocoa/Foundation tool

FROM : parag vibhute
DATE : Sat Jan 05 12:12:44 2008

Hi,

While going through code snippets given in QA, I observed that apple used *
daemon* API to run process in background. In my cocoa application, I just
added daemon(0,0) line in my main function & using LSUIElement, hide the
application icon. Now even though dock icon is hidden, my application is
able to trap logout/restart/shutdown in
-(void)workspaceWillPowerOff:(NSNotification
*)aNotification.  Want to know whether this way is correct? or is it having
any drawback?

Thanks for reply,
Palav


On Jan 4, 2008 9:50 PM, Jean-Daniel Dupas <<email_removed>> wrote:

> Le 4 janv. 08 à 16:46, parag vibhute a écrit :
>
> Hi,
>
> Thanks for reply. I read QA1340 which you mentioned & after going throught
> it got following API:
> *
> IORegisterForSystemPower
> Connects the caller to the Root Power Domain IOService for the purpose of
> receiving Sleep, Wake, ShutDown, PowerUp notifications for the System. *
>
> Even though I have not implemented the code, I think above API will work
> for Shutdown & Restart. Am I correct?
>
>
> I did not try but addind a *kIOMessageSystemWillRestart case and a **
> kIOMessageSystemWillPowerOff case in the switch statement should be
> enough.*
>
>
> Also then what should I use to trap logout event as did not find any info
> regarding it in API reference?
>
>
> Getting login/logout event from a command line tool is a bit tricky. You
> have to use the System Configuration frameworks. But there is another Q&A
> for this task ;-)
>
> http://developer.apple.com/qa/qa2001/qa1133.html
>
>
>
>



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