DPMSQueryExtension - Online Linux Manual PageSection : 3
Updated : libXext 1.3.5
Source : X Version 11
Note : X FUNCTIONS

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NAMEDPMSQueryExtension − queries the X server to determine the availability of the DPMS Extension

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SYNOPSIScc [ flag ​.​.​. ] file ​.​.​. -lXext [ library ​.​.​. ] ​#include <X11/extensions/dpms.h> Bool DPMSQueryExtension (
Display *display ,
int *event_base ,
int *error_base  );

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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

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DESCRIPTIONThe 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.

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RETURN VALUESTRUE  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 extension is not available, and the values of event_base and error_base are undefined.

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SEE ALSODPMSGetVersion(3) 0

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