how to prevent sleep mode when app is running
-
Hi,
When the computer goes into sleep mode my app also seems to be taking
forever in doing the current task.
So how can I prevent the computer from going into sleep mode when my
app is running?
Wishes,
Nick -
Look into UpdateSystemActivity(). It's in the CoreServices framework.
If you call it with UsrActivity every 25 seconds or so, the display
won't dim and the computer won't go to sleep (unless it's forced to.
You can't prevent that).
What is your app doing that you want to resort to something as drastic
as preventing sleep? Someone might be able to suggest a better
solution to your problem if you give more details.
Hank
On Jun 12, 2008, at 8:27 AM, Nick Rogers wrote:> Hi,
> When the computer goes into sleep mode my app also seems to be
> taking forever in doing the current task.
> So how can I prevent the computer from going into sleep mode when my
> app is running?
>
> Wishes,
> Nick
> -
If you can require 10.5, then don't use UpdateSystemActivity(), instead,
do this:
IOPMAssertionID assertionID ;
IOReturn err = IOPMAssertionCreate (
kIOPMAssertionTypeNoDisplaySleep,
kIOPMAssertionLevelOn,
&assertionID);
On 6/12/08 12:34 PM, Hank Heijink (Mailinglists) said:> Look into UpdateSystemActivity(). It's in the CoreServices framework.
> If you call it with UsrActivity every 25 seconds or so, the display
> won't dim and the computer won't go to sleep (unless it's forced to.
> You can't prevent that).
>
> What is your app doing that you want to resort to something as drastic
> as preventing sleep? Someone might be able to suggest a better
> solution to your problem if you give more details.
>
> Hank
>
> On Jun 12, 2008, at 8:27 AM, Nick Rogers wrote:
>
>> Hi,
>> When the computer goes into sleep mode my app also seems to be
>> taking forever in doing the current task.
>> So how can I prevent the computer from going into sleep mode when my
>> app is running?
