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 Entire forum ➜ MUSHclient ➜ Bug reports ➜ WindowText can't display newlines
WindowText can't display newlines

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Posted by Fiendish   USA  (2,555 posts)  Bio   Global Moderator
Date Wed 30 Mar 2011 10:17 AM (UTC)

Amended on Wed 30 Mar 2011 11:37 AM (UTC) by Fiendish

Message
If you use WindowText to display a string that has newlines in it, they show as boxes. This doesn't seem appropriate. If we can't have them actually work, then it'd at least be better to just not show those box characters.
https://github.com/fiendish/aardwolfclientpackage
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Posted by Nick Gammon   Australia  (23,173 posts)  Bio   Forum Administrator
Date Reply #1 on Wed 30 Mar 2011 08:51 PM (UTC)
Message
Well for one thing I can't reproduce that after trying a couple of fonts:


win = "test_" .. GetPluginID ()  
WindowCreate (win, 0, 0, 180, 80, miniwin.pos_center_all, 0, 0xFFFFFF)
WindowFont (win, "f", "Helvetica", 10, true) -- define font
WindowText ( win, "f" , "Hello, world\n", 10, 10, 0, 0, 0, 0)
WindowShow (win,  true)  -- show it


Result:



No doubt it does it for some of them, otherwise you wouldn't have reported it.

For another thing, some fonts actually take the opportunity to use those "non-printable" positions to slip in some graphical characters, which might be useful. For example:


win = "test_" .. GetPluginID ()  
WindowCreate (win, 0, 0, 380, 80, miniwin.pos_center_all, 0, 0xFFFFFF)
WindowFont (win, "f", "Helvetica", 10, true) -- define font

x = 10
for i = 0, 32 do
  x = x + WindowText ( win, "f" , string.char (i), x, 10, 0, 0, 0, 0)
end
WindowShow (win,  true)  -- show it


Result:



So if I suppress character 10 just because it makes a box you don't like, then that will drop one of those graphic characters from your ability to display them. Why do that?

WindowText is an interface to the low-level character drawing routines. It doesn't claim to handle newlines or to suppress them. However I'll update the documentation to make that clearer.
- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by Fiendish   USA  (2,555 posts)  Bio   Global Moderator
Date Reply #2 on Thu 31 Mar 2011 04:57 AM (UTC)
Message
Quote:
Well for one thing I can't reproduce that after trying a couple of fonts:

Odd. Well, it's not a huge deal anyway. As ever, I just reconsidered what I was trying to do and worked around my misunderstanding of the function. It turns out that just keeping the newlines in place would have broken what I was trying to do anyway (more updates to the Aardwolf chat capture window).
https://github.com/fiendish/aardwolfclientpackage
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