(Qt SDK) MySQL Brainstorm -.-

Question

I created a database. Everything seems in order to start filling it up, but every timei try to debug my project it throws this error into my face:

"error: C1083: Cannot open include file: 'QtSql': No such file or directory"

I don't understand why I get it. In every projects I do the same, and it works just perfectly.

I include:

#include <QtSql>

Then I create the Database like this:

db = QSqlDatabase::addDatabase("QMYSQL");
db.setHostName("localhost");
db.setPort(3306);
db.setDatabaseName("nevekdb");
db.setUserName("root"); 
db.setPassword("");

And then i try getting it's content this way:

ui->tableWidget->setColumnCount(4);
        ui->tableWidget->setRowCount(selectQuery.size());
        QStringList fl;
        fejlecek << "ID" << "Name" << "Password" << "Appartment Floor";
        ui->tableWidget->setHorizontalHeaderLabels(fl);
        int i=0;
        while (selectQuery.next()) 
        {
            ui->tableWidget->setItem(i,0,new QTableWidgetItem(selectQuery.value(0).toString()));
            ui->tableWidget->setItem(i,1,new QTableWidgetItem(selectQuery.value(1).toString()));
            ui->tableWidget->setItem(i,2,new QTableWidgetItem(selectQuery.value(2).toString()));
            ui->tableWidget->setItem(i,3,new      QTableWidgetItem(QString::number(selectQuery.value(3).toInt())));
QTableWidgetItem(selectQuery.value(3).toString()));               
            i++;

Answer 1

You should add this line in your .pro file:

QT+= sql