Tk Library Procedures
Tk_FontId, Tk_FontMetrics, Tk_PostscriptFontName - accessor functions for
Tk_Font tkfont (in)
Opaque font token being queried. Must have been returned by a previous
call to Tk_GetFont.
Tk_FontMetrics *fmPtr (out)
Pointer to structure in which the font metrics for tkfont will
Tcl_DString *dsPtr (out)
Pointer to an initialized Tcl_DString to which the name of the
Postscript font that corresponds to tkfont will be appended.
Given a tkfont, Tk_FontId returns the token that should be
selected into an XGCValues structure in order to construct a graphics
context that can be used to draw text in the specified font.
Tk_GetFontMetrics computes the ascent, descent, and linespace of the
tkfont in pixels and stores those values in the structure pointer to by
fmPtr. These values can be used in computations such as to space
multiple lines of text, to align the baselines of text in different
fonts, and to vertically align text in a given region. See the
documentation for the font command for definitions of the terms
ascent, descent, and linespace, used in font metrics.
Tk_PostscriptFontName maps a tkfont to the corresponding
Postcript font name that should be used when printing. The return value
is the size in points of the tkfont and the Postscript font name is
appended to dsPtr. DsPtr must refer to an initialized
Tcl_DString. Given a ``reasonable'' Postscript printer, the
following screen font families should print correctly:
Avant Garde, Arial, Bookman, Courier,
Courier New, Geneva, Helvetica, Monaco,
New Century Schoolbook, New York, Palatino, Symbol,
Times, Times New Roman, Zapf Chancery, and
Any other font families may not print correctly because the computed
Postscript font name may be incorrect or not exist on the printer.
[ tcl8.0a1 | tk8.0a1 | X-ref ]
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