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Thread: Unicode strings int Qt 4.2.1

  1. #1
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    Default Unicode strings int Qt 4.2.1

    Hi everyone!

    I'm editing source code with Eclipse with UTF-8 character set to all files in project. But when I try to wrote Cyrillic characters directly in source code, in execution I got to unpleasant symbols, not what I wrote.

    Where I'm was wrong?

  2. #2
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    Default Re: Unicode strings int Qt 4.2.1

    Use QTextCodec::setCodecForCStrings to set a codec before using any QStrings.
    This can be done in main.cpp, right after instantiating the QApplication object.
    Example:
    Qt Code:
    1. QTextCodec::setCodecForCStrings(QTextCodec::codecForName("ISO-8859-5"));
    To copy to clipboard, switch view to plain text mode 
    This is just an example to show you how it's done. I am not sure if that is the standard Cyrillic encoding name.

    Regards

  3. The following user says thank you to marcel for this useful post:

    mkrentovskiy (6th August 2007)

  4. #3
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    Default Re: Unicode strings int Qt 4.2.1

    Yes, it's worked. I use "UTF-8" as param. Thank's!!! : )))

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    Default Re: Unicode strings int Qt 4.2.1

    still not working for me....I'm trying to add unicode chars and this is the error I get in visual c++


    warning C4566: character represented by universal-character-name '\u03C3' cannot be represented in the current code page (1252)

    I'm trying to add the chars sigma and mu to the status bar.

    any help would be appreciated

    thanks,

    Jonathan

  6. #5
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    Default Re: Unicode strings int Qt 4.2.1

    Use and UTF-8 codec for C strings, as shown above.
    Do not give the unicode codes for the two chars.
    Instead write the char directly in code:
    Qt Code:
    1. QString sigma = "σ";
    To copy to clipboard, switch view to plain text mode 
    Next, if you set the codec correctly, you can set this string to the status bar.

    If you really want to use Unicode codes, than you can try QString::fromUtf16( or one of the other conversion functions )

    Regards

  7. #6
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    Default Re: Unicode strings int Qt 4.2.1

    still getting same here when I'm compiling.....do I need to change the format the document is saved as?

    right now it is set to: unicode - codepage 1200

    I've also tried unicode (UTF-8 with signature) code page 65001

    thanks for your help!

  8. #7
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    Default Re: Unicode strings int Qt 4.2.1

    Yes, change the encoding to UTF-8
    Are you using Eclipse also?

  9. #8
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    Default Re: Unicode strings int Qt 4.2.1

    yeah, changed the encoding to utf-8 and using visual c++ 2005 express edition

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    Default Re: Unicode strings int Qt 4.2.1

    Well, is it working?

  11. #10
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    Default Re: Unicode strings int Qt 4.2.1

    no dice so far, and I've tried a bunch of different file formats.....is this a compiler thing maybe?

  12. #11
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    Default Re: Unicode strings int Qt 4.2.1

    Qt Code:
    1. QChar chr[] = {0X03c3};
    2. QString xxx = QString::fromRawData(chr, 1);
    To copy to clipboard, switch view to plain text mode 

    EDIT: don't forget to set the unicode codec in main.cpp.

    regards
    Last edited by marcel; 6th August 2007 at 15:42.

  13. The following user says thank you to marcel for this useful post:

    JonathanForQT4 (6th August 2007)

  14. #12
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    Default Re: Unicode strings int Qt 4.2.1

    working like a charm, many thanks!

  15. #13
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    Default Re: Unicode strings int Qt 4.2.1

    I use Eclipse IDE for C/C++ & QT integration plug-in , but I'm not write Unicode ?
    How to resolve ? Thank every body.
    Example: I write : "Chà o tất cả các bạn!" but It show in program: "Chà o t?t c? các b?n"
    Nguyá»…n LÆ°u VÅ© - Http://nguyenluuvu.com

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