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
DPMSGetVersion(3)