[erlang-questions] Cesarini/Thompson wxErlang chapter - how to write lastLineRange?
Wed Mar 10 02:20:33 CET 2010
On Martes, 9 de Marzo de 2010 14:53:23 Michael Turner escribió:
> I'm trying to work through the wx example in Cesarini & Thompson
> (chapter "GUI programming with wxErlang". On p.319 there are two
> calls to a function lastLineRange on a wx TextCtrl. The authors don't
> supply this function, and I can't see any corresponding C++ member
> function in the wxTextCtrl API here
> It's looking like I have to write lastLineRange myself, to finish
> working through this chapter. Unless ... someone else has already run
> into this roadblock, got around it, and can map out the detour for me?
> I'm sure I'll kludge something up, but it would be nice to do this one
> more or less by the book, if possible.
> -michael turner
> erlang-questions (at) erlang.org mailing list.
> See http://www.erlang.org/faq.html
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lastLineRange seems to be a local function, not a wxwidgets one, maybe they
didnt want to use undo facilities for the text control... (too complicated for
a quick fix (not tested) for this can be:
ListOfLines=string:tokens(Text,[]), %% Tokenize buffer on newlines
LastLine=lists:last(ListOfLines), %% find the last line
StarPos= wxTextCtrl:getlastposition() - length(LastLine),
EndPos = wxTextCtrl:getlastposition,
Maybe it just works, YMMV
Most people know C is not so high level....
...Everybody else just got assembler overdose
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