[SOLVED] Need help in solving multiple clicking of dialog boxes

sharon_obl82

I have a login box where the checking is done in main.cpp. The values for user and password will be passed from login.cpp to main.cpp and then back to login.cpp. Message box will pop up upon clicking the button but I have to click at least 3-4 times before it goes away! Can someone help to debug on this?

login.cpp:
@

void Login::on_login_clicked()
{

QString user = ui->username->text();
QString passwd = ui->password->text();

if ((!ui->username->text().isEmpty()) && (!ui->password->text().isEmpty()))
{

    //call checking from main.cpp
    MainWindow mw;
    mw.checkLogin(user, passwd);

    if (mw.checkLogin(user, passwd) == 0)
    {
        qDebug() << "Success! Close dialog box";
        QDialog::close();
    }
}
else
 {
    qDebug() << "Invalid credential provided!";
 }

}
@

main.cpp:
@
int main(int argc, char *argv[])
{
QApplication a(argc, argv);

MainWindow w;
w.showMaximized();
w.show();


Login MyLogIn;

//i seriously don't know what this is for but it needs to be there for the login form to open
if (MyLogIn.exec() == QDialog::Accepted)
{

return a.exec();

}

int MainWindow::checkLogin(QString a, QString b)
{
QMessageBox msgBox;
QString aa = a;
QString bb = b;

if((aa=="admin") && (bb=="1234"))
{
     qDebug() << "Login success!";
     msgBox.setText("Login success!"); //i have to click this like 3-4 times before it goes away!
     msgBox.exec&#40;&#41;;
     return 0;
}
else
{
    qDebug(&#41; << "Login FAILED!";
    msgBox.setText("Login FAILED!"); //same with this
    msgBox.exec(&#41;;

    return 1;
}

}
@

andreyc

You call checkLogin twice so you have message box twice.
@
mw.checkLogin(user, passwd); // <-- First message box

if (mw.checkLogin(user, passwd) == 0) // <-- Second
@

Also you create MainWindow twice.
It is not a probem now, but later if the MainWindow will have some complicated logic it will be a big problem.

And you don't need to show a window twice
@
w.showMaximized(); // <-- this line is enough
w.show();
@

Jeroentjehome

Hi,
IMHO Please, please, please, first read a good C++ book. Then a good Qt book and then start programming.
You posted code before because you didn't understand the dialog stuff, this is almost the same.

sharon_obl82

Thanks for the help, appreciate it.