Calling 'lastError' with incomplete return type 'QSqlError'

[lukutis222]

I cannot wrap my head around this simple issue. I am working with MYSQL on QT and just trying to connect to my database that is running on the virtual machine. I use the following:

void MainWindow::ConnectToDB(){
    QSqlDatabase db = QSqlDatabase::addDatabase("QMYSQL");
    db.setHostName("192.168.3.146");
    db.setPort(20080);
    db.setDatabaseName("test");
    db.setUserName("name");
    db.setPassword("password");
    bool ok = db.open();
    qDebug("DB open state = %u ",ok);
    if(ok == 0){
        qDebug("error = %s",db.lastError().text());
    }
}

I cannot print lastError() as it is giving me error:

error: Calling 'lastError' with incomplete return type 'QSqlError'

I have found other simmillar forum posts:
https://www.qtcentre.org/threads/51484-QSqlDatabase-lastError()-in-MessageBox

But this does not seem to fix my issue.

I think its something silly but I cannot figure it out. Thanks in advance.!

[JonB]

@lukutis222
Not sure whether it depends on what version of Qt you have, because I don't particularly recall seeing this issue, but for QSqlError you need #include <QSqlError>, and if you only have #include <QSqlDatabase> that may not be enough.

[lukutis222]

@JonB

#include <QSqlError>

Solved the issue. Thank you a lot!