[Qt-interest] connect mysql

[Bob Hood]

On 9/14/2011 12:32 AM, pengliang(彭亮) wrote:
>
> Hello
>
> I don’t know why application always output that information. Anybody could
> tell me why.
>
> --------------------------------- snippets
>
> query.clear();
>
> f5ErpDb.close();
>
> f5ErpDb.removeDatabase("QODBC");
>
> camMysqlDb=QSqlDatabase::addDatabase("QMYSQL");
>
> ------------------- application output
>
> QSqlDatabasePrivate::removeDatabase: connection 'qt_sql_default_connection'
> is still in use, all queries will cease to work.
>
> QSqlDatabasePrivate::addDatabase: duplicate connection name
> 'qt_sql_default_connection', old connection removed.
>


I believe the Qt documentation clearly explains why you are seeing these
messages. Try wrapping your queries inside a code block to make sure they go
fully out of scope before you remove the database.


Render me gone,                       |||
Bob                                 ^(===)^
---------------------------------oOO--(_)--OOo---------------------------------
   "One of the penalties for refusing to participate in politics is that you
           end up being governed by your inferiors." -- /Plato/

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