#pragma once

#include <stdbool.h>


#define BADDISPLAY -1
#define DPMSDISABLED -2
#define NODPMSEXTENSION -3
#define NOTDPMSCAPABLE -4
#define UNKNOWNDPMSMODE -5


int turn_display_off(const char* xDisplayName);
int is_display_on(const char* xDisplayName, bool* isOn);