Tk Library Procedures
Tk_GetAnchor, Tk_NameOfAnchor - translate between strings and anchor positions
Tk_GetAnchor(interp, string, anchorPtr)
Tcl_Interp *interp (in)
Interpreter to use for error reporting.
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
Tk_Anchor anchor (in)
Anchor position, e.g. TCL_ANCHOR_CENTER.
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,
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.
[ tcl8.0a1 | tk8.0a1 | X-ref ]
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Copyright © 1994-1996 Sun Microsystems, Inc.