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- Tk_GetAnchor(3) Tk Library Procedures
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- _________________________________________________________________
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- NAME
- Tk_GetAnchor, Tk_NameOfAnchor - translate between strings
- and anchor positions
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- SYNOPSIS
- #include <tk.h>
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- Tk_Anchor
- Tk_GetAnchor(_i_n_t_e_r_p, _s_t_r_i_n_g, _a_n_c_h_o_r_P_t_r)
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- char *
- Tk_NameOfAnchor(_a_n_c_h_o_r)
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- ARGUMENTS
- Tcl_Interp *_i_n_t_e_r_p (in) Interpreter to use for
- error reporting.
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- char *_s_t_r_i_n_g (in) String containing name of
- anchor point: one of
- ``n'', ``ne'', ``e'',
- ``se'', ``s'', ``sw'',
- ``w'', ``nw'', or
- ``center''.
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- int *_a_n_c_h_o_r_P_t_r (out) Pointer to location in
- which to store anchor
- position corresponding to
- _s_t_r_i_n_g.
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- Tk_Anchor _a_n_c_h_o_r (in) Anchor position, e.g.
- TCL_ANCHOR_CENTER.
- _________________________________________________________________
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- DESCRIPTION
- Tk_GetAnchor places in *_a_n_c_h_o_r_P_t_r an anchor position
- (enumerated type Tk_Anchor) corresponding to _s_t_r_i_n_g, 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.
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- Under normal circumstances the return value is TCL_OK and
- _i_n_t_e_r_p is unused. If _s_t_r_i_n_g doesn't contain a valid anchor
- position or an abbreviation of one of these names, then an
- error message is stored in _i_n_t_e_r_p->_r_e_s_u_l_t, TCL_ERROR is
- returned, and *_a_n_c_h_o_r_P_t_r is unmodified.
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- Tk 1
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- Tk_GetAnchor(3) Tk Library Procedures
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- 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 _a_n_c_h_o_r. If
- _a_n_c_h_o_r isn't a legal anchor value, then ``unknown anchor
- position'' is returned.
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- KEYWORDS
- anchor position
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- Tk 2
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