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

DPMSEnable(3)							    X FUNCTIONS 						     DPMSEnable(3)

NAME
DPMSEnable - enables DPMS on the specified display
SYNOPSIS
cc [ flag ... ] file ... -lXext [ library ... ] #include <X11/extensions/dpms.h> Status DPMSEnable ( Display *display );
ARGUMENTS
display Specifies the connection to the X server
DESCRIPTION
The DPMSEnable function enables Display Power Management Signaling (DPMS) on the specified display. When DPMS is enabled, DPMS will use the currently saved timeout values. It will trigger the appropriate DPMS power level based on the timeout values. Refer to DPMSSetTimeouts. All physical screens are affected by DPMSEnable at the same time. If DPMSEnable is invoked on a display which has DPMS already enabled, or on a display which does not support DPMS, no change is made and no error is returned.
RETURN VALUES
TRUE The DPMSEnable function always returns TRUE.
SEE ALSO
DPMSCapable(3), DPMSDisable(3), DPMSGetTimeouts(3), DPMSSetTimeouts(3) X Version 11 libXext 1.3.2 DPMSEnable(3)