Database class

[ryadav]

Hi I am trying to use QSqlDatabase, but I am getting build errors and QTCreator doesn't seem to know that QSqlDatabase exists? The IDE is not even auto-completing my typing, etc.

Running build steps for project app13_sqlite3...
Configuration unchanged, skipping qmake step.
Starting: "/usr/bin/make" -w
make: Entering directory `/home/yadav/dev/cpp/QT_Samples/app13_sqlite3-build-desktop'
g++ -c -pipe -g -Wall -W -D_REENTRANT -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/mkspecs/linux-g++ -I../app13_sqlite3 -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtGui -I/usr/include/qt4 -I. -I. -I../app13_sqlite3 -I. -o dialog.o ../app13_sqlite3/dialog.cpp
../app13_sqlite3/dialog.cpp:4: fatal error: QSqlDatabase: No such file or directory
compilation terminated.

[DenisKormalev]

Try to add
@
QT += sql
@
to your project file

[ryadav]

still getting the same error, btw where do i add that? to the project setting -> build steps -> additional arguments ??

also I can't even navigate to QSqlDatabase.h ? using follow symbol under cursor from the IDE, is there something wrong. should this not work with a default SDK install

[ryadav]

ok i figured it out, I needed to

#include <QtSql/QSqlDatabase>
rather than
#include <QSqlDatabase>

[DenisKormalev]

You have .pro file in your project tree. Just add stuff I've said you there and all will be ok.

[ryadav]

thanks again, that helped me figure out where to also add the linker stuff so my exe would run without an error

LIBS += -lsqlite3

[andre]

You don't need to add that lib. It is already linked against the Qt SQLite plugin.

[ryadav]

Andre thanks, didn't know that, removed the explicit linkage.