CreateThreadpoolTimer function (threadpoolapiset.h)

Creates a new timer object.

Syntax

PTP_TIMER CreateThreadpoolTimer(
  [in]                PTP_TIMER_CALLBACK   pfnti,
  [in, out, optional] PVOID                pv,
  [in, optional]      PTP_CALLBACK_ENVIRON pcbe
);

Parameters

[in] pfnti

The callback function to call each time the timer object expires. For details, see TimerCallback.

[in, out, optional] pv

Optional application-defined data to pass to the callback function.

[in, optional] pcbe

A TP_CALLBACK_ENVIRON structure that defines the environment in which to execute the callback. The InitializeThreadpoolEnvironment function returns this structure.

If this parameter is NULL, the callback executes in the default callback environment. For more information, see InitializeThreadpoolEnvironment.

Return value

If the function succeeds, it returns a pointer to a TP_TIMER structure that defines the timer object. Applications do not modify the members of this structure.

If the function fails, it returns NULL. To retrieve extended error information, call GetLastError.

Remarks

To set the timer object, call the SetThreadpoolTimer function.

To compile an application that uses this function, define _WIN32_WINNT as 0x0600 or higher.

Examples

For an example, see Using the Thread Pool Functions.

Requirements

See also

CloseThreadpoolTimer

IsThreadpoolTimerSet

SetThreadpoolTimer

Thread Pools

WaitForThreadpoolTimerCallbacks