Tk_GetAnchor, Tk_NameOfAnchor - translate between strings and anchor
Tk_GetAnchor(interp, string, anchorPtr)
Tcl_Interp *interp (in) Interpreter to use for error
char *string (in) String containing name of anchor
point: one of ``n'', ``ne'', ``e'',
``se'', ``s'', ``sw'', ``w'', ``nw'',
int *anchorPtr (out) Pointer to location in which to store
anchor position corresponding to
Tk_Anchor anchor (in) Anchor position, e.g.
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
abbreviation 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.
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