Question

I am new to Qt and C++ (coming from the PHP world) and am stuck on something that is probably pretty obvious: including non-core Qt modules.

I (understandably) get the compile error that QSqlDatabase does not name a type.

I also get errors when I include either of the following:

• #include <QSqlDatabase>
• #include <QSql>

Any idea how to include the QSql module? Thanks in advance.

Answer 1

Add

QT += sql

To your .pro file to enable this module.

Be careful that you don’t do

QT = ..

after the

QT += sql

Or simply put all the modules in one line:

QT = core gui sql