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.\" Copyright \(co Digital Equipment Corporation, 1996
.\"
.\" Permission to use, copy, modify, distribute, and sell this
.\" documentation for any purpose is hereby granted without fee,
.\" provided that the above copyright notice and this permission
.\" notice appear in all copies. Digital Equipment Corporation
.\" makes no representations about the suitability for any purpose
.\" of the information in this document. This documentation is
.\" provided ``as is'' without express or implied warranty.
.\"
.\" Copyright (c) 1999, 2005, Oracle and/or its affiliates. All rights reserved.
.\"
.\" Permission is hereby granted, free of charge, to any person obtaining a
.\" copy of this software and associated documentation files (the "Software"),
.\" to deal in the Software without restriction, including without limitation
.\" the rights to use, copy, modify, merge, publish, distribute, sublicense,
.\" and/or sell copies of the Software, and to permit persons to whom the
.\" Software is furnished to do so, subject to the following conditions:
.\"
.\" The above copyright notice and this permission notice (including the next
.\" paragraph) shall be included in all copies or substantial portions of the
.\" Software.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
.\" IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
.\" FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
.\" THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
.\" LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
.\" FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
.\" DEALINGS IN THE SOFTWARE.
.\"
.\" X Window System is a trademark of The Open Group.
.\"
.TH DPMSQueryExtension __libmansuffix__ __xorgversion__ "X FUNCTIONS"
.SH NAME
DPMSQueryExtension \- queries the X server to determine the availability
of the DPMS Extension
.SH SYNOPSIS
.PP
.nf
\fBcc\fR [ \fIflag\fR \&.\&.\&. ] \fIfile\fR \&.\&.\&. -\fBlXext\fR [ \fIlibrary\fR \&.\&.\&. ]
\&#include <X11/extensions/dpms.h>
.HP
.B Bool DPMSQueryExtension
(
.br
Display \fI*display\fP\^,
.br
int \fI*event_base\fP\^,
.br
int \fI*error_base\fP\^
);
.if n .ti +5n
.if t .ti +.5i
.SH ARGUMENTS
.TP
.I display
Specifies the connection to the X server
.TP
.I event_base
Specifies the return location for the assigned base event
.TP
.I error_base
Specifies the return location for the assigned base error
.SH DESCRIPTION
.LP
The
.I 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
.I event_base
and
.I error_base
are set to the base event and error numbers, respectively. Otherwise, the
return value is FALSE, and the
values of
.I event_base
and
.I error_base
are undefined.
.SH "RETURN VALUES"
.TP 15
TRUE
The
.I DPMSQueryExtension
function returns TRUE if the extension is available,
and
.I event_base
and
.I error_base
are set to the base event number and base error number for the extension,
respectively.
.TP 15
FALSE
The
.I DPMSQueryExtension
function returns FALSE if extension is not available, and the values of
.I event_base
and
.I error_base
are undefined.
.SH "SEE ALSO"
.BR DPMSGetVersion (__libmansuffix__)
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