connection is not open

[emental86]

Hello, first I'm sorry for my english.

So I try to connect to database trought QT4, but it doesn't work. Program is compiled, and I can run it, but the connection is not open. Do you know where is the problem?

Code:

#include <QtSql>
#include <iostream>
#include <QApplication>
#include <QSqlDatabase>
 
int main(int argc, char *argv[]){
  QCoreApplication a(argc, argv);
  // server_name, db_name, user_name and password isn't real because of privacy
  QSqlDatabase db = QSqlDatabase::addDatabase("QODBC");
  db.setHostName("server_address");
  db.setDatabaseName("db_name");
  db.setUserName("user_name");
  db.setPassword("password");
  bool ok = db.open();
  if(ok){
    std::cout << "Connect...";
  }else{
    std::cout << "Not connect!"
  }
  return 0;
}

#include <QtSql>
#include <iostream>
#include <QApplication>
#include <QSqlDatabase>

int main(int argc, char *argv[]){
  QCoreApplication a(argc, argv);
  // server_name, db_name, user_name and password isn't real because of privacy
  QSqlDatabase db = QSqlDatabase::addDatabase("QODBC");
  db.setHostName("server_address");
  db.setDatabaseName("db_name");
  db.setUserName("user_name");
  db.setPassword("password");
  bool ok = db.open();
  if(ok){
    std::cout << "Connect...";
  }else{
    std::cout << "Not connect!"
  }
  return 0;
}

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When I run the programm I get: Not connect!
Can anyone help me please?

[caduel]

* try printing the error message: QSqlDatabase::lastError()* also, check your console for errors: could the db driver plugin be found/loaded?

HTH

[emental86]

thx, now it says: [unixODBC][Driver Manager]Data source name not found, and no default driver specified QODBC3: Unable to connect

Do anyone know what cas I do?

[wysota]

You have to configure an ODBC connection.

http://www.unixodbc.org/doc/