The PTIMERAPCROUTINE type defines a pointer to this callback function. TimerAPCProc is a placeholder for the application-defined function name.

C# Definition:

private delegate void TimerAPCProc(IntPtr completionArg, UInt32 timerLowValue, UInt32 timerHighValue);

VB Definition:

''' <summary>
''' The TimerAPCProc Callback Function. 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.
''' http://msdn.microsoft.com/en-us/library/ms686786(v=vs.85).aspx
''' </summary> Orignal C++ Line: VOID CALLBACK TimerAPCProc( __in_opt LPVOID lpArgToCompletionRoutine, __in DWORD dwTimerLowValue, __in DWORD dwTimerHighValue);
''' <param name="completionArg">ByVal completionArg As IntPtr</param>
''' <param name="timerLowValue">ByVal timerLowValue As UInt32</param>
''' <param name="timerHighValue">ByVal timerHighValue As UInt32</param>
''' <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.</remarks> http://msdn.microsoft.com/en-us/library/ms681951(v=vs.85).aspx
Private Delegate Sub TimerAPCProc(ByVal completionArg As IntPtr, ByVal timerLowValue As UInt32, ByVal timerHighValue As UInt32)

User-Defined Types:

None.

Parameters:

lpArgToCompletionRoutine [in, optional]     The value passed to the function using the lpArgToCompletionRoutine parameter of the SetWaitableTimer function.
dwTimerLowValue [in]             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]             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. http://msdn.microsoft.com/en-us/library/ms681951(v=vs.85).aspx

Notes:

None.