| DPMSQueryExtension(3) | Library Functions Manual | 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) 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.
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 extension is not available, and the values of event_base and error_base are undefined.
 
SEE ALSO
 DPMSGetVersion(3)