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#pragma once
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#include <stdbool.h>
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#define BADDISPLAY -1
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#define DPMSDISABLED -2
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#define NODPMSEXTENSION -3
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#define NOTDPMSCAPABLE -4
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#define UNKNOWNDPMSMODE -5
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int turn_display_off(const char* xDisplayName);
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int is_display_on(const char* xDisplayName, bool* isOn);
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