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)