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authorrjohnson <rjohnson>1998-04-01 09:37:39 (GMT)
committerrjohnson <rjohnson>1998-04-01 09:37:39 (GMT)
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+'\"
+'\" Copyright (c) 1990 The Regents of the University of California.
+'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
+'\"
+'\" See the file "license.terms" for information on usage and redistribution
+'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+'\"
+'\" SCCS: @(#) GetAnchor.3 1.9 96/03/26 18:08:45
+'\"
+.so man.macros
+.TH Tk_GetAnchor 3 "" Tk "Tk Library Procedures"
+.BS
+.SH NAME
+Tk_GetAnchor, Tk_NameOfAnchor \- translate between strings and anchor positions
+.SH SYNOPSIS
+.nf
+\fB#include <tk.h>\fR
+.sp
+int
+\fBTk_GetAnchor(\fIinterp, string, anchorPtr\fB)\fR
+.sp
+char *
+\fBTk_NameOfAnchor(\fIanchor\fB)\fR
+.SH ARGUMENTS
+.AS "Tk_Anchor" *anchorPtr
+.AP Tcl_Interp *interp in
+Interpreter to use for error reporting.
+.AP char *string in
+String containing name of anchor point: one of ``n'', ``ne'', ``e'', ``se'',
+``s'', ``sw'', ``w'', ``nw'', or ``center''.
+.AP int *anchorPtr out
+Pointer to location in which to store anchor position corresponding to
+\fIstring\fR.
+.AP Tk_Anchor anchor in
+Anchor position, e.g. \fBTCL_ANCHOR_CENTER\fR.
+.BE
+
+.SH DESCRIPTION
+.PP
+\fBTk_GetAnchor\fR places in \fI*anchorPtr\fR an anchor position
+(enumerated type \fBTk_Anchor\fR)
+corresponding to \fIstring\fR, which will be one of
+\fBTK_ANCHOR_N\fR, \fBTK_ANCHOR_NE\fR, \fBTK_ANCHOR_E\fR, \fBTK_ANCHOR_SE\fR,
+\fBTK_ANCHOR_S\fR, \fBTK_ANCHOR_SW\fR, \fBTK_ANCHOR_W\fR, \fBTK_ANCHOR_NW\fR,
+or \fBTK_ANCHOR_CENTER\fR.
+Anchor positions are typically used for indicating a point on an object
+that will be used to position that object, e.g. \fBTK_ANCHOR_N\fR means
+position the top center point of the object at a particular place.
+.PP
+Under normal circumstances the return value is \fBTCL_OK\fR and
+\fIinterp\fR is unused.
+If \fIstring\fR doesn't contain a valid anchor position
+or an abbreviation of one of these names, then an error message is
+stored in \fIinterp->result\fR, \fBTCL_ERROR\fR is returned, and
+\fI*anchorPtr\fR is unmodified.
+.PP
+\fBTk_NameOfAnchor\fR is the logical inverse of \fBTk_GetAnchor\fR.
+Given an anchor position such as \fBTK_ANCHOR_N\fR it returns a
+statically-allocated string corresponding to \fIanchor\fR.
+If \fIanchor\fR isn't a legal anchor value, then
+``unknown anchor position'' is returned.
+
+.SH KEYWORDS
+anchor position