MySQL Login?

[steve.bush]

I am trying to do a MySQL login. The connection.open() is returning false with correct details...

QSqlDatabase connection = QSqlDatabase::addDatabase("QMYSQL");
    connection.setHostName(host);
    connection.setUserName(username);
    connection.setPassword(password);
    connection.setDatabaseName(database);
    connection.setPort(3306);
 
    if(connection.open())
         // Load program...

QSqlDatabase connection = QSqlDatabase::addDatabase("QMYSQL");
    connection.setHostName(host);
    connection.setUserName(username);
    connection.setPassword(password);
    connection.setDatabaseName(database);
    connection.setPort(3306);
    
    if(connection.open())
         // Load program...

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Some help would be great!