Source code of Windows XP (NT5)
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//----------------------------------------------------------------------------
//
// Microsoft Windows
// Copyright (C) Microsoft Corporation, 1997
//
// File: msidle.h
//
// Contents: Types and prototypes for idle detection callback dll
//
// Classes:
//
// Functions:
//
// History: 05-26-1997 darrenmi (Darren Mitchell) Created
//
//----------------------------------------------------------------------------
//
// Idle callback type
//
typedef void (WINAPI* _IDLECALLBACK) (DWORD dwState);
#define STATE_USER_IDLE_BEGIN 1
#define STATE_USER_IDLE_END 2
//
// BeginIdleDetection - start monitoring idleness
//
// pfnCallback - function to call back when idle state changes
// dwIdleMin - minutes of inactivity before idle callback
// dwReserved - must be 0
//
// Returns: 0 on success, error code on failure
//
// Note: Exported as ordinal 3
//
DWORD BeginIdleDetection(_IDLECALLBACK pfnCallback, DWORD dwIdleMin, DWORD dwReserved);
typedef DWORD (WINAPI* _BEGINIDLEDETECTION) (_IDLECALLBACK, DWORD, DWORD);
//
// EndIdleDetection - stop monitoring idleness
//
// Returns: TRUE on success, FALSE on failure
//
// Note: Exported as ordinal 4
//
BOOL EndIdleDetection(DWORD dwReserved);
typedef BOOL (WINAPI* _ENDIDLEDETECTION) (DWORD, DWORD);
//
// SetIdleTimeout - Set minutes for idle timeout and reset idle state
//
// dwMinutes - new minutes threshold for idleness
// fResetState - flag to return to non-idle state to retrigger idle callback
// dwReserved - must be 0
//
// Note: Exported as ordinal 5
//
BOOL SetIdleTimeout(DWORD dwMinutes, DWORD dwReserved);
typedef BOOL (WINAPI* _SETIDLETIMEOUT) (DWORD, DWORD);
//
// SetIdleNotify - Turns on or off notification when idle
//
// fNotify - flag whether to notify or not
// dwReserved - must be 0
//
// Note: Exported as ordinal 6
//
void SetIdleNotify(BOOL fNotify, DWORD dwReserved);
typedef void (WINAPI* _SETIDLENOTIFY) (BOOL, DWORD);
//
// SetBusyNotify - Turns on or off notification when busy
//
// fNotify - flag whether to notify or not
// dwReserved - must be 0
//
// Note: Exported as ordinal 7
//
void SetBusyNotify(BOOL fNotify, DWORD dwReserved);
typedef void (WINAPI* _SETBUSYNOTIFY) (BOOL, DWORD);
//
// GetIdleMinutes
//
// dwReserved - must be 0
//
// Returns number of minutes since user's last activity
//
// Note: Exported as ordinal 8
//
DWORD GetIdleMinutes(DWORD dwReserved);
typedef DWORD (WINAPI* _GETIDLEMINUTES) (DWORD);