'\" te
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.TH DAT_EVD_QUERY 3DAT "Jul 16, 2004"
.SH NAME
dat_evd_query \- provide parameters of the Event Dispatcher,
.SH SYNOPSIS
.LP
.nf
cc [ \fIflag\fR\&.\|.\|. ] \fIfile\fR\&.\|.\|. \fB-ldat\fR [ \fIlibrary\fR\&.\|.\|. ]
#include <\fBdat/udat.h\fR>

DAT_RETURN
    dat_evd_query (
    IN    DAT_EVD_HANDLE        \fIevd_handle\fR,
    IN    DAT_EVD_PARAM_MASK    \fIevd_param_mask\fR,
    OUT   DAT_EVD_PARAM         *\fIevd_param\fR
    )
.fi

.SH PARAMETERS
.sp
.ne 2
.na
\fB\fIevd_handle\fR\fR
.ad
.RS 18n
Handle for an instance of Event Dispatcher.
.RE

.sp
.ne 2
.na
\fB\fIevd_param_mask\fR\fR
.ad
.RS 18n
Mask for EVD parameters
.RE

.sp
.ne 2
.na
\fB\fIevd_param\fR\fR
.ad
.RS 18n
Pointer to a Consumer-allocated structure that the Provider fills for
Consumer-requested parameters.
.RE

.SH DESCRIPTION
.sp
.LP
The \fBdat_evd_query()\fR function provides to the Consumer parameters of the
Event Dispatcher, including the state of the EVD (enabled/disabled). The
Consumer passes in a pointer to the Consumer-allocated structures for EVD
parameters that the Provider fills.
.sp
.LP
The \fIevd_param_mask\fR parameter allows Consumers to specify which parameters
to query. The Provider returns values for \fIevd_param_mask\fR requested
parameters. The Provider can return values for any of the other parameters.
.SH RETURN VALUES
.sp
.ne 2
.na
\fB\fBDAT_SUCCESS\fR\fR
.ad
.RS 25n
The operation was successful.
.RE

.sp
.ne 2
.na
\fB\fBDAT_INVALID_HANDLE\fR\fR
.ad
.RS 25n
The \fIevd_handle\fR parameter is invalid.
.RE

.sp
.ne 2
.na
\fB\fBDAT_INVALID_PARAMETER\fR\fR
.ad
.RS 25n
The \fIevd_param_mask\fR parameter is invalid.
.RE

.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp

.sp
.TS
box;
c | c
l | l .
ATTRIBUTE TYPE	ATTRIBUTE VALUE
_
Interface Stability	Standard: uDAPL, 1.1, 1.2
_
MT-Level	Unsafe
.TE

.SH SEE ALSO
.sp
.LP
\fBlibdat\fR(3LIB), \fBattributes\fR(5)