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#1025 Courier 12 Underline font problem
closed-wont-fix
5
2004-02-13
2001-06-27
Anonymous
No
I am using the 8.3.3 release of tcl/tk, under windows,
and have noticed that Courier 12 Underlined doesn't
display correctly in the text widget.
Consider the following
toplevel .foo
text .foo.bar -font {Courier 12 underline}
pack .foo.bar
As you type in the window, the font being displayed
does not have any underlined characters.
If you then change the font as follows:-
.foo.bar conf -font {Courier 10 underline}
the display shows text that has been underlined.
Trying several different fonts, it appears that
Courier (or Courier New) size 12 only displays this
behaviour.
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How strange -- reproduced in Tk 8.5a0, all sizes except 12
display ok, and even 12 displays ok in a label or entry,
just not in the text widget!
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I suspect on OS/font problem, since in this case the OS is
actually responsible for drawing the underline.
It's also interesting to see that in WordPad, with Courier
11 underline, text is drawn underlined as you type, but with
Courier 12 underline it is only underlined after you hit
return on a line....
Anyway, this puts it firmly out of my area of understanding,
but does perhaps locate the problem more specifically to
something in the Win/Font area.
(the difference between label/entry and text widget is that
the former use Tk_DrawTextLayout and the latter Tk_DrawChars).
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I read somewhere that this was a OS/font issue in that it
isn't reporting the extent correctly. It only needs to be
off by one pixel to not show it, and the labels might have
that extra pixel.