QHostAddress

[rjschirmer]

I am using QT Creator to create what I thought was a quick GUI application. I've narrowed down the problem to this:

QLineEdit lineGwIpAddr should contain an IP address entered by the user (i.e. "127.0.0.1"). Right now when I click QPushButton btnTest I want to validate the IP address QString as such:

void MainWindow::on_btnTest_clicked()
{
    QHostAddress gatewayAddress();
 
    if (gatewayAddress.setAddress(ui->lineGwIpAddr->text())) {
        QMessageBox msgBox;
        msgBox.setText("IP Address is OK");
        msgBox.exec();
    }
    else {
        QMessageBox msgBox;
        msgBox.setText("Bad IP Address");
        msgBox.exec();
    }
}

void MainWindow::on_btnTest_clicked()
{
    QHostAddress gatewayAddress();

    if (gatewayAddress.setAddress(ui->lineGwIpAddr->text())) {
        QMessageBox msgBox;
        msgBox.setText("IP Address is OK");
        msgBox.exec();
    }
    else {
        QMessageBox msgBox;
        msgBox.setText("Bad IP Address");
        msgBox.exec();
    }
}

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setAddress(const QString & address) should return true if the string was able to be parsed. But when I build I get the following error:

.../imagedownload/mainwindow.cpp:22: error: request for member `setAddress' in `gatewayAddress', which is of non-class type `QHostAddress ()()'

It looks like it is not recognizing QHostAddress as a class. I have included networking in my project by adding QT += network in the project file, so I'm not sure why I am still getting this error.

I've attached the entire project to this post. Any help would be greatly appreciated.

[Lykurg]

try

QHostAddress gatewayAddress;

QHostAddress gatewayAddress;

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And be aware that it only checks the formal correctness, and not if the address exists and is reachable!

You may also have a look at QLineEdit::inputMask or QLineEdit::setValidator().

[rjschirmer]

try

QHostAddress gatewayAddress;

QHostAddress gatewayAddress;

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And be aware that it only checks the formal correctness, and not if the address exists and is reachable!

You may also have a look at QLineEdit::inputMask or QLineEdit::setValidator().

Doh! <headslap>

I figured it would be something lame-brained such as that. Thanks!