Tk_GetUserInactiveTime, Tk_ResetUserInactiveTime - discover user inactivity time

       Display *display (in)          The display on which the user inactivity timer is to be queried or reset.
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Tk_GetUserInactiveTime  returns  the  number  of  milliseconds  that  have  passed  since  the  last user
       interaction (usually via keyboard or mouse) with the respective display. On systems and displays that  do
       not  support querying the user inactivity time, -1 is returned.  Tk_ResetUserInactiveTime resets the user
       inactivity timer of the given display to zero.   On  windowing  systems  that  do  not  support  multiple
       displays display can be passed as NULL.

       idle, inactive

Tk                                                     8.5                           Tk_GetUserInactiveTime(3tk)

       Tk_GetUserInactiveTime, Tk_ResetUserInactiveTime - discover user inactivity time

#include<tk.h>

       long
       Tk_GetUserInactiveTime(display)

       Tk_ResetUserInactiveTime(display)