问题
From C# program I want to call windows command prompt and make the system to sleep and after few seconds I should wake the system. I am successful in making the system sleep but I can't wake it up after few seconds. The command that I tried for making it sleep and wake up is "powrprof.dll,SetSuspendState 0,1,0 && timeout 10 && echo "Hello World" ".
The link http://www.groovypost.com/howto/schedule-wake-sleep-windows-automatically/ says echo will wake the system but its not working.
回答1:
It is possible using the win32 CreateWaitableTimer API.
- The process that creates the WaitableTimer has to be alive when the system sleep is called.
- Example uses pywin32 api.
- Allow timers to wake system from sleep in your Windows power configuration.
from win32event import CreateWaitableTimer
from win32event import SetWaitableTimer
from win32event import WaitForSingleObject
import sys
def main(minutes):
minutes = int(minutes)
handle = CreateWaitableTimer(None, True, 'Wake up')
dt = -10000000 * minutes * 60 # Convert to seconds.
SetWaitableTimer(handle, dt, 0, None, None, True)
rc = WaitForSingleObject(handle, 1000 * (minutes + 1) * 60) # 11 s.
print ("Done")
if __name__ == '__main__':
minutes = sys.argv[1]
main(minutes)
For running the above script call wakeupWindows.py from console like:
python wakeupWindows.py 2
Will set the wake up timer to 2 minutes from now. The script will wait for 2 + 1 = 3 minutes. From another console put the system off to sleep using:
shutdown /h
After 2 minutes, the system will wake up from sleep.
Similar implementations are possible using C# or this script can be converted to an exe using pyinstaller as explained here.
来源：https://stackoverflow.com/questions/31243194/command-to-wake-up-the-windows-system-after-sleep-command