DPMSQueryExtension (3) - Linux Manuals

DPMSQueryExtension: queries the X server to determine the availability

Command to display DPMSQueryExtension manual in Linux: $ man 3 DPMSQueryExtension

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 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 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.