Open URL of an external browser when a button is clicked in a Qt application

Question

My application should contain a button, which, when clicked on, should open an external browser, 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 the nested specifier
• error: invalid use of incomplete type 'class QUrl'
• error: forward declaration of class QUrl

Answer 1

You forgot to enable QUrl because there is only a direct declaration.

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