centos man page for dpmsforcelevel

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, DPMSModeSuspend, 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)