[Qt-interest] QSqlDatabase: QMYSQL driver not loaded error suddenly appeared

[André Somers]

Did you install the SQL plugins at the place they are expected (see
documentation)? Their version needs the match the Qt version you are using,
of course.

André

-----Oorspronkelijk bericht-----
Van: qt-interest-bounces at trolltech.com
[mailto:qt-interest-bounces at trolltech.com] Namens Robert Wood
Verzonden: woensdag 24 februari 2010 19:36
Aan: Trolltech list
Onderwerp: Re: [Qt-interest] QSqlDatabase: QMYSQL driver not loaded error
suddenly appeared

Actually, none of the apps now work. I cleaned the one that was working 
and rebuilt it properly, now that fails in the same way, so there is 
*something* I have done today that has screwed it all up.

I have been messing with environment variables to try and get a plugin 
working in creator, so could I have messed up one of those?


Robert Wood wrote:
> I have suddenly had this error pop up and I can't connect to my sql 
> server. The error says this:
> 
> QSqlDatabase: QMYSQL driver not loaded
> QSqlDatabase: available drivers: QSQLITE QPSQL7 QPSQL
> QSqlQuery::exec: database not open
> QSqlDatabasePrivate::removeDatabase: connection
> 
> Then when I close the program it says this:
> 
> 'qt_sql_default_connection' is still in use, all queries will cease to
work.
> 
> The really weird thing is I haven't changed the source code. The last 
> thing I did was create a new table (with this program). Also, if I run a 
> different program with the exact same code to initialise the code that 
> works, whereas a third program that again I haven't touched does.
> 
> I have installed a newer version of qt-sdk today, but the error persists 
> with the previous version.
> 
> Googling suggests all sorts of things that don't seem to tie up with my 
> error as I haven't touched the source code and a different program 
> written under Qt works.
> 
> Would really appreciate a pointer on this as it's driving me nuts!
> 
> Thanks, Rob
> 
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> Qt-interest at trolltech.com
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> 
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