DPMSQueryExtension(3) X FUNCTIONS DPMSQueryExtension(3)

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) Exten- sion. 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 exten- sion is not available, and the values of event_base and error_base are undefined.