---
name: "RtlUpdateTimer"
section: "3w"
platform: "linux"
package: "libwine-dev"
version: "1.4.1-4"
release: "Debian 7 (Wheezy)"
platforms: ["linux"]
url: "https://new.carta.tech/RtlUpdateTimer"
---

# RtlUpdateTimer(3w)

## NAME

**RtlUpdateTimer** (NTDLL.@)

## SYNOPSIS

NTSTATUS RtlUpdateTimer\
  (\
   HANDLE *TimerQueue*,\
   HANDLE *Timer*,\
   DWORD  *DueTime*,\
   DWORD  *Period*\
  )

## DESCRIPTION

Changes the time at which a timer expires.

## PARAMS

*TimerQueue* **\[In\]**  The queue that holds the timer.

*Timer* **\[In\]**  The timer to update.

*DueTime* **\[In\]**  The delay, in milliseconds, before next firing the timer.

*Period* **\[In\]**  The period, in milliseconds, at which to fire the timer after the first callback. If zero, the timer will not refire once. It still needs to be deleted with RtlDeleteTimer.

## RETURNS

**Success:** **STATUS\_SUCCESS**.

**Failure:** Any **NTSTATUS** code.

## IMPLEMENTATION

Declared in **"winternl.h"**.

Implemented in **"dlls/ntdll/threadpool.c"**.

Debug channel **"threadpool"**.