DPMSQueryExtension(3x) manual page

Table of Contents

## 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 );Argumentsdisplay 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
    DescriptionThe  DPMSQueryExtension  function queries the X server to determine
    the availability of the Display Power Management 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 ValuesTRUE 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 AlsoDPMSGetVersion(3x)