DPMSDisable - disables DPMS on the specified display
cc [ flag ... ] file ... -lXext [ library ... ]
#include <X11/extensions/dpms.h>
Status DPMSDisable ( Display *display );
  - display
- Specifies the connection to the X server
The DPMSDisable function disables Display Power Management Signaling
  (DPMS) on the specified display. When disabled, DPMS sets the display to
  DPMSModeOn. If DPMSDisable is invoked on a display with DPMS already
  disabled or on a display which does not support DPMS, no change is made and no
  error is returned.
  - TRUE
- The DPMSDisable function always returns TRUE.
DPMSCapable(3), DPMSEnable(3)