Function

IOPMAssertionRetain

Increments the assertion's retain count.

Declaration

void IOPMAssertionRetain(IOPMAssertionID theAssertion);

Parameters

theAssertion

The assertion ID to retain.

Discussion

Increments the retain count according to CoreFoundation style retain/release semantics. Retain count can be inspected in the assertion's info dictionary at key kIOPMAssertionRetainCountKey

See Also

Assertions

IOPMAssertionCopyProperties

Copies details about an IOPMAssertion

IOPMAssertionCreate

Dynamically requests a system behavior from the power management system.

Deprecated
IOPMAssertionCreateWithName

Dynamically requests a system behavior from the power management system.

IOPMAssertionCreateWithProperties

Creates an IOPMAssertion with more flexibility than IOPMAssertionCreateWithDescription.

IOPMAssertionDeclareUserActivity

Declares that the user is active on the system. This causes the display to power on and postpone display sleep up to the user's display sleep Energy Saver settings. If you prefer to hold the display awake for a longer period and you know how long you'd like to hold it, consider taking assertion kIOPMAssertionTypePreventUserIdleDisplaySleep using IOPMAssertionCreateWithDescription API instead.

IOPMAssertionRelease

Decrements the assertion's retain count.

IOPMAssertionSetProperty

Sets a property in the assertion.

IOPMCopyAssertionsByProcess

Returns a dictionary listing all assertions, grouped by their owning process.

IOPMCopyAssertionsStatus

Returns a list of available assertions and their system-wide levels.

Beta Software

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