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.\" Copyright (c) 1993, 1994 X Consortium
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.\"
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.\" Permission is hereby granted, free of charge, to any person obtaining a
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.\" copy of this software and associated documentation files (the "Software"),
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.\" to deal in the Software without restriction, including without limitation
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.\" the rights to use, copy, modify, merge, publish, distribute, sublicense,
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.\" and/or sell copies of the Software, and to permit persons to whom the
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.\" Software furnished to do so, subject to the following conditions:
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.\"
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.\" The above copyright notice and this permission notice shall be included in
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.\" all copies or substantial portions of the Software.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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.\" IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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.\" FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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.\" THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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.\" WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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.\" OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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.\" SOFTWARE.
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.\"
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.\" Except as contained in this notice, the name of the X Consortium shall not
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.\" be used in advertising or otherwise to promote the sale, use or other
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.\" dealing in this Software without prior written authorization from the
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.\" X Consortium.
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.\"
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.ds tk X Toolkit
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.ds xT X Toolkit Intrinsics \- C Language Interface
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.ds xI Intrinsics
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.ds xW X Toolkit Athena Widgets \- C Language Interface
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.ds xL Xlib \- C Language X Interface
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.ds xC Inter-Client Communication Conventions Manual
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.ds Rn 3
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.ds Vn 2.2
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.hw XtGet-Class-Extension wid-get
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.na
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.de Ds
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.nf
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.\\$1D \\$2 \\$1
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.ft CW
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.ps \\n(PS
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.\".if \\n(VS>=40 .vs \\n(VSu
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.\".if \\n(VS<=39 .vs \\n(VSp
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..
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.de De
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.ce 0
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.if \\n(BD .DF
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.nr BD 0
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.in \\n(OIu
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.if \\n(TM .ls 2
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.sp \\n(DDu
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.fi
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..
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.de IN \" send an index entry to the stderr
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..
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.de Pn
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.ie t \\$1\fB\^\\$2\^\fR\\$3
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.el \\$1\fI\^\\$2\^\fP\\$3
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..
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.de ZN
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.ie t \fB\^\\$1\^\fR\\$2
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.el \fI\^\\$1\^\fP\\$2
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..
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.ny0
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.TH XtGetClassExtension __libmansuffix__ __xorgversion__ "XT FUNCTIONS"
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.SH NAME
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XtGetClassExtension \- locate a class extension record
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.SH SYNTAX
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.HP
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XtPointer XtGetClassExtension(WidgetClass \fIobject_class\fP, Cardinal
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\fIbyte_offset\fP, XrmQuark \fItype\fP, long \fIversion\fP, Cardinal
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\fIrecord_size\fP);
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.SH ARGUMENTS
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.IP \fIobject_class\fP 1i
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Specifies the widget class containing the extension list to be searched.
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.IP \fIbyte_offset\fP 1i
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Specifies the offset in bytes form the base of the widget class of the
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extension field to be searched.
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.IP \fItype\fP 1i
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Specifies the name of the class extension to be located.
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.IP \fIversion\fP 1i
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Specifies the minimum acceptable version of the class extension
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required for a match.
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.IP \fIrecord_size\fP 1i
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Specifies the minimum acceptable length of the class extension record
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required for match, or 0.
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.SH DESCRIPTION
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The list of extension records at the specified offset in the specified
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\fIwidget_class\fP will be searched for a match on the specified
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\fItype\fP, a version greater than or equal to the specified \fIversion\fP,
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and a record size greater than or equal the specified \fIrecord_size\fP
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if it is nonzero.
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.ZN XtGetClassExtension
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returns a pointer to a matching extension record or NULL if no match
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is found. The returned extension record is owned by the widget class
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and must not be modified or freed by the caller, except possibly to
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be modified by the widget class owner.
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.SH "SEE ALSO"
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.br
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\fI\*(xT\fP
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.br
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\fI\*(xL\fP
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