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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