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ODBC Driver issue

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  • T Offline
    T Offline
    Theophilus
    wrote on last edited by
    #4

    EukeSnud, I'm just curious: What Qt-Version, DB and OS are you using?

    Know Yourelf - if you can...

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    • L Offline
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      loladiro
      wrote on last edited by
      #5

      Does the Backend DB you use support Unicode? If so, could you post your DB structure to make sure there's no error in it.

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      • T Offline
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        Theophilus
        wrote on last edited by
        #6

        I'm using MaxDB (Version 7.6). The Table "DBPARAMETERS" says "_UNICODE" = "NO" and "DEFAULT_CODE" = "ASCII", which means that the varchar datatype is stored as ascii. However, the same software with an older Qt-Version (4.1) displays the Umlauts correctly.
        Here's some background information: I've been trying to integrate an older software into a new environment. The old software was compiled in VS2003 with Qt 4.1. Now I've compiled it in VS2010 with Qt 4.7.3. Both versions run properly on Windows 7 with the same ODBC-driver. However, the old one displays the Umlauts correctly, while the new one does not. Therefore, I think it is the newer Qt-Version that is giving me a hard time.

        Know Yourelf - if you can...

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        • T Offline
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          Theophilus
          wrote on last edited by
          #7

          This webside says that MaxDB up to and including version 7.6 uses the ASCII-characterset ISO 8859/1.2 (if you chose to use Ascii): http://maxdb.sap.com/doc/7_7/44/bb285be00215b2e10000000a155369/content.htm

          Know Yourelf - if you can...

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          • L Offline
            L Offline
            loladiro
            wrote on last edited by
            #8

            Try
            @
            QTextCodec::setCodecForLocale(QTextCodec::codecFromName("latin1"));
            @
            at the beginning of your application.

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            • T Offline
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              Theophilus
              wrote on last edited by
              #9

              Neither
              @
              QTextCodec::setCodecForLocale(QTextCodec::codecForName("Latin1"));
              @
              nor
              @
              QTextCodec::setCodecForLocale(QTextCodec::codecForName("latin1"));
              @
              works.

              Know Yourelf - if you can...

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              • T Offline
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                Theophilus
                wrote on last edited by
                #10

                The following code changes the "�" to a "?". I do not know if that helps at all, to get to the source of the error.

                Original code:
                @
                QString name =q2.value(1).toString(); //q2 being the QSqlQuery
                @
                Changed code (that changes the "�" to a "?"):
                @
                QByteArray encodedString = q2.value(1).toByteArray();
                QTextCodec *codec = QTextCodec::codecForName("ISO 8859-1");
                QString name = codec->toUnicode(encodedString);
                @

                Know Yourelf - if you can...

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                • E Offline
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                  EukeSnud
                  wrote on last edited by
                  #11

                  Qt Version is 4.7.3
                  Db Version is Oracle Enterprise 11.2.0.1.0
                  Os is Win7 Ultimate x64

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                  • T Offline
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                    Theophilus
                    wrote on last edited by
                    #12

                    Anyone any idea???

                    Know Yourelf - if you can...

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                    • E Offline
                      E Offline
                      EukeSnud
                      wrote on last edited by
                      #13

                      bump
                      Still having this issue...

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                      • S Offline
                        S Offline
                        Sebtm
                        wrote on last edited by
                        #14

                        I have the same problem with a Visual Fox Pro database with the ISO Latin-1 character encoding. I use Qt 4.7.4.

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