DPMSQueryExtension(3)      X FUNCTIONS      DPMSQueryExtension(3)



NAME
       DPMSQueryExtension - queries the X server to determine the
       availability of the DPMS Extension

SYNOPSIS
       cc [ flag ... ] file ... -lXext [ library ... ]
       #include 

       Bool DPMSQueryExtension
              (
                    Display *display,
                    int *event_base,
                    int *error_base
              );

ARGUMENTS
       display
              Specifies the connection to the X server

       event_base
              Specifies the return location for the assigned base
              event

       error_base
              Specifies the return location for the assigned base
              error

DESCRIPTION
       The DPMSQueryExtension function queries the  X  server  to
       determine the availability of the Display Power Management
       Signaling (DPMS) Extension.  If the  extension  is  avail-
       able,  it  returns TRUE, and the event_base and error_base
       are set to the base event and error numbers, respectively.
       Otherwise,  the  return  value is FALSE, and the values of
       event_base and error_base are undefined.

RETURN VALUES
       TRUE           The  DPMSQueryExtension  function   returns
                      TRUE  if  the  extension  is available, and
                      event_base and error_base are  set  to  the
                      base event number and base error number for
                      the extension, respectively.

       FALSE          The  DPMSQueryExtension  function   returns
                      FALSE  if  extension  is not available, and
                      the values of event_base and error_base are
                      undefined.

SEE ALSO
       DPMSGetVersion(3)



X Version 11              libXext 1.0.4     DPMSQueryExtension(3)