DPMSGetVersion

cc [ flag ... ] file ... -lXext [ library ... ]
#include <X11/extensions/dpms.h>

Status DPMSGetVersion
(
      Display *display,
      int *major_version,
      int *minor_version
);

display

Specifies the connection to the X server

major_version

Specifies the return location for the extension major version

minor_version

Specifies the return location for the extension minor version

The DPMSGetVersion function returns the version of the Display Power Management Signaling (DPMS) extension implemented by the X server. It returns a major and minor version number. The major version number will be incremented for protocol incompatible changes, and the minor version number will be incremented for small, upward compatible changes.

TRUE

The DPMSGetVersion function returns TRUE when the extension is supported and values are returned.

FALSE

The DPMSGetVersion function returns FALSE when the extension is not supported.

DPMSCapable(3), DPMSQueryExtension(3)