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I cant connect my Qt to Sqlite

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  • W Offline
    W Offline
    wenks21
    wrote on last edited by
    #4

    so what should be there? :) thanks..

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    • W Offline
      W Offline
      wenks21
      wrote on last edited by
      #5

      ok thanks..I'll try the link..:)

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      • S Offline
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        secretNinja
        wrote on last edited by
        #6

        Only remove ; .

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        • L Offline
          L Offline
          leon.anavi
          wrote on last edited by
          #7

          [quote author="wenks21" date="1304148870"]so what should be there? :) thanks..[/quote]

          Just follow secretNinja's advice and remove ; because the << operator is overloaded for "qDebug":http://doc.qt.nokia.com/latest/qdebug.html

          You may also need to call text() because qDebug does not expect QSqlError:
          @
          qDebug() << db.lastError().text();
          @

          http://anavi.org/

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          • W Offline
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            wenks21
            wrote on last edited by
            #8

            when i remove that line of codes. I got these errors:
            error: QSqlDatabase: No such file or directory,
            error: 'QSqlError' does not name a type,
            error: 'QSqlDatabase' does not name a type,

            I'm very sorry for being newbie.. :)

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            • L Offline
              L Offline
              leon.anavi
              wrote on last edited by
              #9

              [quote author="wenks21" date="1304150060"]when i remove that line of codes. I got these errors:
              error: QSqlDatabase: No such file or directory,
              error: 'QSqlError' does not name a type,
              error: 'QSqlDatabase' does not name a type,

              I'm very sorry for being newbie.. :)

              [/quote]

              Make sure you have included all required headers and include the "QtSql Module ":http://doc.qt.nokia.com/latest/qtsql.html at your pro file:

              @QT += sql@

              If you are a newbie it is better to stick to some examples and tutorials :)

              Regards,
              Leon

              http://anavi.org/

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              • W Offline
                W Offline
                wenks21
                wrote on last edited by
                #10

                wow thank you very much! Now it's working.. :)

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                • W Offline
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                  wenks21
                  wrote on last edited by
                  #11

                  I still have a question. Why is that when I re-run the program the console says that 'Cannot retrieve debugging output!'

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                  • L Offline
                    L Offline
                    leon.anavi
                    wrote on last edited by
                    #12

                    [quote author="wenks21" date="1304151460"]I still have a question. Why is that when I re-run the program the console says that 'Cannot retrieve debugging output!' [/quote]

                    Please check this thread from Qt Center: "Cannot retrieve debugging output!":http://www.qtcentre.org/threads/37438-Cannot-retrieve-debugging-output!

                    Please do not use a single thread for multiple question from different issues because after that it will be difficult to track down the main issue.

                    Best regards,
                    Leon

                    http://anavi.org/

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                    • W Offline
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                      wenks21
                      wrote on last edited by
                      #13

                      ok i'm sorry.. thanks again it helps a lot..:)

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                      • O Offline
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                        owenzhao
                        wrote on last edited by
                        #14

                        This helps me a lot. :)
                        [quote author="leon.anavi" date="1304149339"][quote author="wenks21" date="1304148870"]so what should be there? :) thanks..[/quote]

                        Just follow secretNinja's advice and remove ; because the << operator is overloaded for "qDebug":http://doc.qt.nokia.com/latest/qdebug.html

                        You may also need to call text() because qDebug does not expect QSqlError:
                        @
                        qDebug() << db.lastError().text();
                        @

                        [/quote]

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                        • F Offline
                          F Offline
                          francomartins
                          wrote on last edited by
                          #15

                          it's solved wenks21 ?

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