Undocumented functions of NTDLL

2OO1, 7 January

NTSYSAPI 
NTSTATUS
NTAPI


NtSetTimer(



  IN HANDLE               TimerHandle,
  IN PLARGE_INTEGER       DueTime,
  IN PTIMER_APC_ROUTINE   TimerApcRoutine OPTIONAL,
  IN PVOID                TimerContext OPTIONAL,
  IN BOOLEAN              ResumeTimer,
  IN LONG                 Period OPTIONAL,
  OUT PBOOLEAN            PreviousState OPTIONAL );

• TimerHandle     HANDLE to Timer Object opened with TIMER_MODIFY_STATE access.

• DueTime     Time when timer should be set, in 100ns units. If it is negative value, it means relative time.

• TimerApcRoutine     User's APC routine, defined as follows:

        typedef void (*PTIMER_APC_ROUTINE)(
                        IN PVOID TimerContext,
                        IN ULONG TimerLowValue,
                        IN LONG TimerHighValue
                        );

• TimerContext     Optional parameter to TimerApcRoutine.

• ResumeTimer     If set, Power Management restores system to normal mode when timer is signaled.

• Period     If zero, timer is set only once. Else will be set periodic in time intervals defined in Period value (in 100ms units).

• PreviousState     Optional pointer to value receiving state of Timer Object before NtSetTimer call.
  
  
  

  Documented by:

  Tomasz Nowak

  
  
  
  

Library: ntdll.lib

NtCancelTimer

NtCreateTimer

NtOpenTimer

NtQueryTimer