cc [ flag ... ] file ... -lXext [ library ... ] #include <X11/extensions/dpms.h> Bool DPMSCapable ( Display *display );Argumentsdisplay Specifies the connection to the X server DescriptionThe DPMSCapable function returns the Display Power Management Signaling (DPMS) capability of the X server, either TRUE (capable of DPMS) or FALSE (incapable of DPMS). Return ValuesTrue The DPMSCapable function returns True if the X server is capable of DPMS. False The DPMSCapable function returns True if the X server is incapable of DPMS.