TimerAPCProc callback function
Applies to: desktop apps only
An application-defined timer completion routine. Specify this address when calling the SetWaitableTimer function. The PTIMERAPCROUTINE type defines a pointer to this callback function. TimerAPCProc is a placeholder for the application-defined function name.
Syntax
VOID CALLBACK TimerAPCProc( __in_opt LPVOID lpArgToCompletionRoutine, __in DWORD dwTimerLowValue, __in DWORD dwTimerHighValue );
Parameters
- lpArgToCompletionRoutine [in, optional]
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The value passed to the function using the lpArgToCompletionRoutine parameter of the SetWaitableTimer function.
- dwTimerLowValue [in]
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The low-order portion of the UTC-based time at which the timer was signaled. This value corresponds to the dwLowDateTime member of the FILETIME structure. For more information about UTC-based time, see System Time.
- dwTimerHighValue [in]
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The high-order portion of the UTC-based time at which the timer was signaled. This value corresponds to the dwHighDateTime member of the FILETIME structure.
Return value
This function does not return a value.
Remarks
The completion routine is executed by the thread that activates the timer using SetWaitableTimer. However, the thread must be in an alertable state. For more information, see Asynchronous Procedure Calls.
Examples
For an example, see Using a Waitable Timer with an Asynchronous Procedure Call.
Requirements
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Minimum supported client | Windows XP |
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Minimum supported server | Windows Server 2003 |
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Header |
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See also
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Build date: 3/7/2012
