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* ext/tk/sample/tktextio.rb: add comment

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@8120 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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nagai 2005-03-08 09:48:46 +00:00
parent 746268fa1b
commit 6f70f54e1d
1 changed files with 10 additions and 2 deletions
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12
ext/tk/sample/tktextio.rb
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@ -1,9 +1,18 @@
#!/usr/bin/env ruby #!/usr/bin/env ruby
# #
# sample class of handling I/O stream on a TkText widget # sample class of handling I/O stream on a TkText widget
#
# by Hidetoshi NAGAI # by Hidetoshi NAGAI
# #
# NOTE: TkTextIO supports 'character' (not 'byte') access only.
# So, for example, TkTextIO#getc returns a character, TkTextIO#pos
# means the character position, TkTextIO#read(size) counts by
# characters, and so on.
# Of course, it is available to make TkTextIO class to suuport
# 'byte' access. However, it may break multi-byte characters.
# and then, displayed string on the text widget may be garbled.
# I think that it is not good on the supposed situation of using
# TkTextIO.
#
require 'tk' require 'tk'
class TkTextIO < TkText class TkTextIO < TkText
@ -50,7 +59,6 @@ class TkTextIO < TkText
@open[:r] = true; @open[:w] = true @open[:r] = true; @open[:w] = true
@txtpos.set('end - 1 char') @txtpos.set('end - 1 char')
end end
end end
def <<(obj) def <<(obj)