Tk_GetAnchor(3) Tk Library Procedures Tk_GetAnchor(3)______________________________________________________________________________NAME
Tk_GetAnchor, Tk_NameOfAnchor - translate between strings and anchor
positions
SYNOPSIS
#include <tk.h>
int
Tk_GetAnchor(interp, string, anchorPtr)
char *
Tk_NameOfAnchor(anchor)ARGUMENTS
Tcl_Interp *interp (in) Interpreter to use for error report‐
ing.
char *string (in) String containing name of anchor
point: one of ``n'', ``ne'', ``e'',
``se'', ``s'', ``sw'', ``w'',
``nw'', or ``center''.
int *anchorPtr (out) Pointer to location in which to
store anchor position corresponding
to string.
Tk_Anchor anchor (in) Anchor position, e.g.
TCL_ANCHOR_CENTER.
_________________________________________________________________DESCRIPTION
Tk_GetAnchor places in *anchorPtr an anchor position (enumerated type
Tk_Anchor) corresponding to string, which will be one of TK_ANCHOR_N,
TK_ANCHOR_NE, TK_ANCHOR_E, TK_ANCHOR_SE, TK_ANCHOR_S, TK_ANCHOR_SW,
TK_ANCHOR_W, TK_ANCHOR_NW, or TK_ANCHOR_CENTER. Anchor positions are
typically used for indicating a point on an object that will be used to
position that object, e.g. TK_ANCHOR_N means position the top center
point of the object at a particular place.
Under normal circumstances the return value is TCL_OK and interp is
unused. If string doesn't contain a valid anchor position or an abbre‐
viation of one of these names, then an error message is stored in
interp->result, TCL_ERROR is returned, and *anchorPtr is unmodified.
Tk_NameOfAnchor is the logical inverse of Tk_GetAnchor. Given an
anchor position such as TK_ANCHOR_N it returns a statically-allocated
string corresponding to anchor. If anchor isn't a legal anchor value,
then ``unknown anchor position'' is returned.
KEYWORDS
anchor position
TkTk_GetAnchor(3)
