Open url on an external browser on button click in a Qt application

Question

My application should contains a button which when you click on it an external browser should be opened here is my code

void Logindialog::on_inscriptionPushButton_clicked()
{
  QDesktopServices::openUrl(QUrl("http://www.google.com", QUrl::TolerantMode));
}

but when i compile i get this list of errors

• error: incomplete type 'QUrl' used in nested name specifier
• error: invalid use of incomplete type 'class QUrl'
• error: forward declaration of 'class QUrl'

Answer 1

You forgot to include QUrl, as only a forward declaration exists.

Use either #include <QUrl> or #include <QtCore> at the top of your file.