如何将计算机转入休眠（挂起）和唤醒？有无这样的API函数？

[zouxz]

[karma]

You are probably looking for SetSystemPowerState, which is part of Power Management Functions in Platform SDK

see details at
http://msdn.microsoft.com/library/en-us/hardware/power_2c4z.asp?frame=true

[prog_st]

Platform SDK: Hardware
SetSuspendState
The SetSuspendState function suspends the system by shutting power down. Depending on the Hibernate parameter, the system either enters a suspend (sleep) state or hibernation (S4). If the ForceFlag parameter is TRUE, the system suspends operation immediately; if it is FALSE, the system requests permission from all applications and device drivers before doing so.

BOOL SetSuspendState (
BOOL Hibernate,
BOOL ForceCritical,
BOOL DisableWakeEvent
);
Parameters
Hibernate
[in] Specifies the state of the system. If TRUE, the system hibernates. If FALSE, the system is suspended.
ForceCritical
[in] Forced suspension. If TRUE, the function broadcasts a PBT_APMSUSPEND event to each application and driver, then immediately suspends operation. If FALSE, the function broadcasts a PBT_APMQUERYSUSPEND event to each application to request permission to suspend operation.
DisableWakeEvent
[in] If TRUE, the system disables all wake events. If FALSE, any system wake events remain enabled.
Return Values
If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks
An application may use SetSuspendState to transition the system from the working state to the standby (sleep), or optionally, hibernate (S4) state. This function is similar to the SetSystemPowerState function.

Requirements
Windows NT/2000/XP: Included in Windows 2000 and later.
Windows 95/98/Me: Included in Windows 98 and later.
Header: Declared in Powrprof.h.
Library: Use Powrprof.lib.

See Also
Power Management Overview, Power Management Functions, PBT_APMQUERYSUSPEND, PBT_APMSUSPEND

Platform SDK Release: August 2001 What did you think of this topic?
Let us know. Order a Platform SDK CD Online
(U.S/Canada) (International)



Requirements
Windows NT/2000/XP: Included in Windows 2000 and later.
Windows 95/98/Me: Included in Windows 98 and later.
Header: Declared in Powrprof.h.
Library: Use Powrprof.lib.
See Also
Power Management Overview, Power Management Functions, PBT_APMQUERYSUSPEND, PBT_APMSUSPEND