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'\" t
.\" Copyright 1999 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.
.\"
.TH XkbSetDebuggingFlags __libmansuffix__ __xorgversion__ "XKB FUNCTIONS"
.SH NAME
XkbSetDebuggingFlags \- Change the values of any of the debug controls
.SH SYNOPSIS
.HP
.B Bool XkbSetDebuggingFlags
.BI "(\^Display *" "display" "\^,"
.BI "unsigned int " "mask" "\^,"
.BI "unsigned int " "flags" "\^,"
.BI "char *" "msg" "\^,"
.BI "unsigned int " "ctrls_mask" "\^,"
.BI "unsigned int " "ctrls" "\^,"
.BI "unsigned int *" "ret_flags" "\^,"
.BI "unsigned int *" "ret_ctrls" "\^);"
.if n .ti +5n
.if t .ti +.5i
.SH ARGUMENTS
.TP
.I display
connection to X server
.TP
.I mask
mask selecting debug output flags to change
.TP
.I flags
values for debug output flags selected by mask
.TP
.I msg
message to print right now
.TP
.I ctrls_mask
mask selecting debug controls to change
.TP
.I ctrls
values for debug controls selected by ctrls_mask
.TP
.I ret_flags
resulting state of all debug output flags
.TP
.I ret_ctrls
resulting state of all debug controls
.SH DESCRIPTION
.LP
The debugging aids are intended for use primarily by Xkb implementors and are
optional in any implementation.
There are two bitmasks that may be used to control debugging. One bitmask
controls the output of debugging information, and the other controls behavior.
Both bitmasks are initially all zeros.
To change the values of any of the debug controls, use
.I XkbSetDebuggingFlags.
.I XkbSetDebuggingFlags
modifies the debug output flags as specified by
.I mask
and
flags,
modifies the debug controls flags as specified by
.I ctrls_mask
and
ctrls,
prints the message
.I msg,
and backfills
.I ret_flags
and
.I ret_ctrls
with the resulting debug output and debug controls flags.
When bits are set in the debug output masks,
.I mask
and
.I flags,
Xkb prints debug information corresponding to each bit at appropriate points
during its processing. The device to which the output is written is
implementation-dependent, but is normally the same device to which X server
error messages are directed; thus the bits that can be set in
.I mask
and
.I flags
is implementation-specific. To turn on a debug output selection, set the bit for
the output in the
.I mask
parameter and set the corresponding bit in the
.I flags
parameter. To turn off event selection for an event, set the bit for the output
in the
.I mask
parameter and do not set the corresponding bit in the
.I flags
parameter.
When bits are set in the debug controls masks,
.I ctrls_mask
and
.I ctrls,
Xkb modifies its behavior according to each controls bit.
.I ctrls_mask
and
ctrls
are related in the same way that
.I mask
and
.I flags
are. The valid controls bits are defined in Table 1.
.TS
c s s
l l l.
Table 1 Debug Control Masks
_
Debug Control Mask Value Meaning
_
XkbDF_DisableLocks (1 << 0) Disable actions that lock modifiers
.TE
.I XkbSetDebuggingFlags
returns True if successful and False otherwise. The only protocol error it may
generate is BadAlloc, if for some reason it is unable to allocate storage.
.I XkbSetDebuggingFlags
is intended for developer use and may be disabled in production X servers. If it
is disabled,
.I XkbSetDebuggingFlags
has no effect and does not generate any protocol errors.
The message in
.I msg
is written immediately. The device to which it is written is implementation
dependent but is normally the same device where X server error messages are
directed.
.SH "RETURN VALUES"
.TP 15
True
The
.I XkbSetDebuggingFlags
function returns True when successful.
.TP 15
False
The
.I XkbSetDebuggingFlags
function returns False when not successful.
.SH DIAGNOSTICS
.TP 15
.B BadAlloc
Unable to allocate storage
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