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DPMSQueryExtension - queries the X server to determine the availability of the DPMS Extension

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"
 15
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.
 15
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 (__libmansuffix__)