Re: "Kicking" the screensaver/display timers
Re: "Kicking" the screensaver/display timers
- Subject: Re: "Kicking" the screensaver/display timers
- From: "Shayne Wissler" <email@hidden>
- Date: Tue, 22 Jul 2008 15:45:23 -0600
Thanks again Ethan for your help. This code has the "kicking" effect I
was after for *display sleep*, but has no effect on the screensaver:
IOPMAssertionID assertionID;
IOReturn err = IOPMAssertionCreate(kIOPMAssertionTypeNoDisplaySleep,
kIOPMAssertionLevelOn, &assertionID);
err = IOPMAssertionRelease(assertionID);
I can probably get by with just this by disabling the screensaver, but
it'd be nice if the screensaver could be "kicked" as well. Any ideas?
Shayne
On Fri, Jul 18, 2008 at 5:49 PM, Ethan Bold <email@hidden> wrote:
> Check out IOPMAssertionCreate() with type kIOPMAssertionTypeNoDisplaySleep.
> This is new in 10.5.
>
> It's described in the 10.5 Darwin release notes here:
> http://developer.apple.com/releasenotes/Darwin/RN-IOKitPowerManagment/index.html
>
> And discussed in practice here on a cocoa mailing list:
> http://www.cocoabuilder.com/archive/message/cocoa/2008/6/19/210697
>
> -Ethan
>
> On Jul 18, 2008, at 4:24 PM, Shayne Wissler wrote:
>
>> Hello,
>>
>> I need an API call/approach for "kicking" the the
>> display-sleep/screensaver timers, as if the user had moved the mouse
>> or pressed a key. I need a program to be able to wake up the display
>> and/or stop the screensaver, without having the user interact with the
>> mouse or keyboard. (E.g., for an app used in a classroom situation to
>> broadcast a message to a Mac hanging on a wall that happened to be in
>> sleep mode).
>>
>> Any pointers to a relevant API would be appreciated.
>>
>>
>> Shayne
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