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.
SEE ALSO
