使用X11 / XScreenSaver获取空闲时间的Unixy解决方案：
#!/usr/bin/python
import ctypes
import os
class XScreenSaverInfo( ctypes.Structure):
""" typedef struct { ... } XScreenSaverInfo; """
_fields_ = [('window',ctypes.c_ulong),# screen saver window
('state',ctypes.c_int),# off,on,disabled
('kind',# blanked,internal,external
('since',# milliseconds
('idle',# milliseconds
('event_mask',ctypes.c_ulong)] # events
xlib = ctypes.cdll.LoadLibrary('libX11.so')
display = xlib.XOpenDisplay(os.environ['DISPLAY'])
xss = ctypes.cdll.LoadLibrary('libXss.so.1')
xss.XScreenSaverAllocInfo.restype = ctypes.POINTER(XScreenSaverInfo)
xssinfo = xss.XScreenSaverAllocInfo()
xss.XScreenSaverQueryInfo(display,xlib.XDefaultRootWindow(display),xssinfo)
idletime = xssinfo.contents.idle
# Cleaning Up
xss.XFree(xssinfo)
xss.XCloseDisplay(display)
print "idle: %d ms" % idletime
(见X11 idle time and focused window in Python.)
编辑@H_502_1@在上面的代码中添加了一个清理部分,以便可以从函数中定期调用它,因为如果没有提供清理,则xDisplay可能会因为未关闭显示而发生错误,因为可以在此link上找到
