[Qt-jambi-interest] codecForTr

[Eskil Abrahamsen Blomfeldt]

Hi, Tomasz.

Tomasz 'Trog' Welman wrote:
> I've just one problem.
> QTextCodec.codecForLocale() returns "System", which is... annoying, 
> because when I run an application (having utf-8 as my base encoding),
> which reads iso2 files into string, converts this string to unicode,
> and then (from unicode) to target encoding (which is the base encoding of
> the wmsystem, in my case KDE & utf-8) the string are displayed 
> incorrectly
> in gui objects like QLineEdit.

If your string is encoded in unicode, it should display correctly in 
QLineEdit without any further change to the encoding. Does this fail?

In your case I would read the 8-bit encoded files into e.g. a QByteArray 
to avoid the implicit conversion to unicode, convert the byte array to 
unicode using QTextCodec and then setting this string directly on the 
QLineEdit. Since Qt Jambi handles all the GUI in your application, 
including the text, and Qt Jambi is inherently unicode-based, you should 
not need to worry about the 8-bit encoding of your target platform in 
the GUI elements.

When writing files to the disk, do it the other way around: Take the 
unicode string, convert it to your selected encoding and write the 
resulting QByteArray to the file.

I've attached a little example of what I mean. The test.txt file is 
encoded in UTF-8, and I am using a QTextCodec to decode it. When running 
the application you should be able to edit an actual line in the line 
edit (as nature intended.)

Please correct me if I misunderstood something.

-- Eskil
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