[Interest] Sqlite3 handler access

[Scott Aron Bloom]

Same crash.. the pointer is fine, somethine else is screwy

Scott

-----Original Message-----
From: interest-bounces+scott.bloom=onshorecs.com at qt-project.org [mailto:interest-bounces+scott.bloom=onshorecs.com at qt-project.org] On Behalf Of Constantin Makshin
Sent: Tuesday, August 14, 2012 4:52 AM
To: Qt Interest
Subject: Re: [Interest] Sqlite3 handler access

Don't use the undocumented QVariant::data() method designed for some Qt's internal purposes. Use QVariant::value():

sqlite3* handler = v.value<sqlite3*>();

On Mon, Aug 13, 2012 at 10:16 PM, Scott Aron Bloom <Scott.Bloom at onshorecs.com> wrote:
> I need to add a custom command to my sqlite3 system Im accessing via 
> QSqlDatabase..
>
>
>
> Per reading found at sourceforge and qtcentre, I have compiled in the 
> code locally from the Qt source area..
>
>
>
> However, on the call to sqlite3_create_function, sqlite is crashing…
>
>
>
> extern "C"
>
> void getMsgID( sqlite3_context * context, int argc, sqlite3_value ** 
> argv )
>
> {
>
>     assert( argc == 2 );
>
>     sqlite3_result_int( context, 0 );
>
> }
>
>
>
> bool loadCustomCommands( QSqlDatabase & db )
>
> {
>
>     QVariant v = db.driver()->handle();
>
>     if ( !v.isValid() || qstrcmp( v.typeName(), "sqlite3*" ) != 0 )
>
>     {
>
>         return false;
>
>     }
>
>
>
>     sqlite3 * handler = *static_cast<sqlite3**>( v.data() );
>
>     if ( !handler )
>
>         return false;
>
>
>
>     sqlite3_create_function( handler, "msgid", 2, SQLITE_ANY, NULL, 
> &getMsgID, NULL, NULL );
>
>     return true;
>
> }
>
>
>
> Any thoughts, ideas??
>
>
> Scott
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