XSetScreenSaver man page on Ultrix

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XSetScreenSaver(3X11)		     X11R5		 XSetScreenSaver(3X11)

NAME
       XSetScreenSaver, XForceScreenSaver, XActivateScreenSaver, XResetScreen‐
       Saver, XGetScreenSaver - manipulate the screen saver

SYNTAX
       XSetScreenSaver(display, timeout, interval, prefer_blanking,
       allow_exposures)
	     Display *display;
	     int timeout, interval;
	     int prefer_blanking;
	     int allow_exposures;

       XForceScreenSaver(display, mode)
	     Display *display;
	     int mode;

       XActivateScreenSaver(display)
	     Display *display;

       XResetScreenSaver(display)
	     Display *display;

       XGetScreenSaver(display, timeout_return, interval_return, prefer_blank‐
       ing_return,
			 allow_exposures_return)
	     Display *display;
	     int *timeout_return, *interval_return;
	     int *prefer_blanking_return;
	     int *allow_exposures_return;

ARGUMENTS
       allow_exposures
		 Specifies the screen save control values.  You can pass or

       allow_exposures_return
		 Returns the current screen save control value or

       display	 Specifies the connection to the X server.

       interval	 Specifies the interval, in seconds, between screen saver
		 alterations.

       interval_return
		 Returns the interval between screen saver invocations.

       mode	 Specifies the mode that is to be applied.  You can pass or

       prefer_blanking
		 Specifies how to enable screen blanking.  You can pass or

       prefer_blanking_return
		 Returns the current screen blanking preference or

       timeout	 Specifies the timeout, in seconds, until the screen saver
		 turns on.

       timeout_return
		 Returns the timeout, in seconds, until the screen saver turns
		 on.

DESCRIPTION
       Timeout and interval are specified in seconds.  A timeout of 0 disables
       the screen saver (but an activated screen saver is not deactivated),
       and a timeout of -1 restores the default.  Other negative values gener‐
       ate a error.  If the timeout value is nonzero, enables the screen
       saver.  An interval of 0 disables the random-pattern motion.  If no
       input from devices (keyboard, mouse, and so on) is generated for the
       specified number of timeout seconds once the screen saver is enabled,
       the screen saver is activated.

       For each screen, if blanking is preferred and the hardware supports
       video blanking, the screen simply goes blank.  Otherwise, if either
       exposures are allowed or the screen can be regenerated without sending
       events to clients, the screen is tiled with the root window background
       tile randomly re-origined each interval minutes.	 Otherwise, the
       screens' state do not change, and the screen saver is not activated.
       The screen saver is deactivated, and all screen states are restored at
       the next keyboard or pointer input or at the next call to with mode

       If the server-dependent screen saver method supports periodic change,
       the interval argument serves as a hint about how long the change period
       should be, and zero hints that no periodic change should be made.
       Examples of ways to change the screen include scrambling the colormap
       periodically, moving an icon image around the screen periodically, or
       tiling the screen with the root window background tile, randomly re-
       origined periodically.

       can generate a error.

       If the specified mode is and the screen saver currently is deactivated,
       activates the screen saver even if the screen saver had been disabled
       with a timeout of zero.	If the specified mode is and the screen saver
       currently is enabled, deactivates the screen saver if it was activated,
       and the activation timer is reset to its initial state (as if device
       input had been received).

       can generate a error.

       The function activates the screen saver.

       The function resets the screen saver.

       The function gets the current screen saver values.

DIAGNOSTICS
       Some numeric value falls outside the range of values accepted by the
       request.
		 Unless a specific range is specified for an argument, the
		 full range defined by the argument's type is accepted.	 Any
		 argument defined as a set of alternatives can generate this
		 error.

SEE ALSO
       Xlib - C Language X Interface

							 XSetScreenSaver(3X11)
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