On 2/16/10 4:18 PM, Laurent Daudelin wrote:
On Feb 16, 2010, at 13:13, Joe Ranieri wrote:
On 2/16/10 4:10 PM, Neil Allain wrote:
On Feb 16, 2010, at 2:57 PM, Laurent Daudelin wrote:
I'm working on a an app that at some point might start transferring a large
file to a USB device. Apparently, if the system is set to go to sleep, the
transfer will fail.
I was thinking of using the NSWorkspace extendPowerOffBy: but then the doc says
"Currently unimplemented".
So, if my app get a notification that the system is going to sleep, how can I
delay it?
You can call UpdateSystemActivity() periodically (such as on a timer) to
prevent it from going to sleep.
Neil
You should probably be using IOPMAssertionCreateWithName() instead if you can
require 10.5+. This gives the system a lot more information about the intent of
your code and the potential ability to show some nice UI to the user.
Oops! The doc says it was introduced in 10.6 and I need to support 10.5. I guess I'll
have to check "IOPMAssertionCreate"...
Thanks!
Curious. The header file says:
IOReturn IOPMAssertionCreateWithName(
CFStringRef AssertionType,
IOPMAssertionLevel AssertionLevel,
CFStringRef AssertionName,
IOPMAssertionID *AssertionID)
AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
Is the header wrong?
-- Joe Ranieri
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