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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 <X11/extensions/dpms.h>

       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 Manage-
       ment Signaling (DPMS) Extension.  If the extension is available,  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, respec-
                      tively.

       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 1.3.3           DPMSQueryExtension(3)