Database connexion Mysql from Qt5.01[solved]

[Marco_105]

@#include <QCoreApplication>
#include <QtSql/QSqlDatabase>
#include <QtSql>
#include <QDebug>
#include <iostream>

//remplacer l'affichage par la commande cout
#define q2c(string) string.toStdString()

int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);

//connection sur la database

// QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
// db.setDatabaseName("myDBLite.db");

QSqlDatabase db = QSqlDatabase::addDatabase("QMYSQL");
db.setHostName("localhost");

// db.setPort(3306);
db.setUserName("root");
db.setPassword("");
db.setDatabaseName("myDataBase");

if(db.open())
{
    qDebug() << "Vous etes connecte a " << db.hostName();
}else{
    qDebug() << "Connexion FAILED.";
    qDebug() << "Driver disponible: " << db.drivers();
    qDebug() << "Driver fonctionnel(QMYSQL): " << db.isDriverAvailable("QMYSQL");
    qDebug() << "numero de l'erreur: " << db.lastError().number();
    qDebug() << "database erreur: " << db.lastError().databaseText();
    qDebug() << "driver erreur: " << db.lastError().driverText();
    qDebug() << "type erreur: " << db.lastError().type();
}


return a.exec&#40;&#41;;

}
@

I have compliled mySql driver witch are : qsqlmysql.dll / qsqlmysqld.dll and libqsqlmysqld.a / libqsqlmysql.a

My SQLServer is include in WampServer on Windows 7,
so i woul'd like to know what is needed to complete the process and getting connexion well done !

The above test return :

"Connexion FAILED."

Driver available: "QSQLLITE", "QMYSQL", "QMYSQL3"
Driver IsAvailable(QMYSQL): true
error number: 2004
database error: "Unknown MySQL server host 'localhost' (0)"
driver error: "QMYSQL: Unable to connect"
type error: 1

Can you inform what is wrong ? I already look in the doc but don't how to solve it.

[SGaist]

Hi,

Are you sure your server is running ?

[sidewinder]

Does it make any difference if you use 127.0.0.1 instead of localhost?

[Marco_105]

Finally the source of the problem was just because i make composant from extern folder with
Qt5.01 everywhere_qtbase and i use Qt5.01(WingW_msi) for running apps.

So i was confuse about where exactly put composant and solve it like that:

libmysql.dll >C:\Qt\Qt5.0.1\5.0.1\mingw47_32\bin

libqsqlmysql.a, libqslmysql.dll, libqsqlmysqld.a, libqslmysqld.dll

C:\Qt\Qt5.0.1\5.0.1\mingw47_32\plugins\sqldrivers

run wamp
run appli

result:
*"Vous etes connecte a 'localhost' " *

nice, thanks for watching.

[SGaist]

Great you found out !

Don't forget to update the thread's title to solve so other forum users may know that a solution has been found :)