Problem with querymodel example model

[arinbluse]

Hi,

I'm sorry to that did not English well

I'm studying qt5, this site example.

Linux

my problem site link is here.

qt-project.org/doc/qt-5.0/qtsql/querymodel.html

but I'dont know why this problem message.

/////////////////////////////////////////////////////////////////////////////////////////////
Starting /root/build-model-Desktop_Qt_5_1_0_GCC_32bit-Debug/model...

(model:2139): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",

QSqlQuery::exec: database not open
QSqlQuery::exec: database not open
QSqlQuery::exec: database not open
OpenGL Warning: Failed to connect to host. Make sure 3D acceleration is enabled for this VM.

/root/build-model-Desktop_Qt_5_1_0_GCC_32bit-Debug/model exited with code 0

////////////////////////////////////////////////////////////////////////////////////////////////

I want to solve this problem.

please help me.

[SGaist]

Hi and welcome to devnet,

"database not open", did you setup your database correctly ?

Also, why are you developing as root ? It's very bad practice even if you are the only one using the virtual machine.

[arinbluse]

Thank you rely SGaist !!

I'm appreciated your advice.

you say "your database correctly"

that what mean ?

I using database in mysql

[SGaist]

It means, did you properly use QSqlDatabase to create a connection to your database ? Did you call open ? Check that it succeeded etc...