Cannot connect to mysql database

[ChrisW67]

QSqlDatabase::lastError() and the console output from the program will probably tell you exactly what the problem is.

Fearu is correct about the absence of a Qt MySQL plugin in the shipped Qt SDK on Windows. Most Linux builds will have it, but I don't know if the shipped SDK bundle does.

[phapha]

You're right.
Here is the software output when I try to connect to database.
Démarrage de C:\Users\HP\Desktop\lastClient\callTracker-build-desktop-Qt_4_7_4_for_Desktop_-_MinGW_4_4__Qt_SDK__Debug\debug\callTracker.exe... QSqlDatabase: QMYSQL driver not loaded
QSqlDatabase: available drivers: QSQLITE
Thanks