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CentOS 7.0 - man page for dpmsforcelevel (centos section 3)

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DPMSForceLevel(3)			   X FUNCTIONS				DPMSForceLevel(3)

NAME
       DPMSForceLevel - forces a DPMS capable display into the specified power level

SYNOPSIS
       cc [ flag ... ] file ... -lXext [ library ... ]
       #include <X11/extensions/dpms.h>

       Status DPMSForceLevel ( Display *display, CARD16 level );

ARGUMENTS
       display
	      Specifies the connection to the X server

       level  Specifies the level to force power to

DESCRIPTION
       The  DPMSForceLevel function forces a DPMS capable display into the specified power level.
       The level must be one of following four states: DPMSModeOn, DPMSModeStandby,  DPMSModeSus-
       pend, or DPMSModeOff. Values other than these will result in a BadValue error.  If DPMS is
       disabled on the display, trying to set the power level on the display  will  result  in	a
       BadMatch protocol error.

RETURN VALUES
       TRUE	      The DPMSForceLevel function always returns TRUE.

ERRORS
       BadValue       A   level  other	than  DPMSModeOn,  DPMSModeStandby,  DPMSModeSuspend,  or
		      DPMSModeOff was specified.

       BadMatch       DPMS is disabled on the specified display.

SEE ALSO
       DPMSCapable(3), DPMSInfo(3), DPMSGetTimeouts(3), DPMSSetTimeouts(3)

X Version 11				  libXext 1.3.2 			DPMSForceLevel(3)
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