CODEWITHSUNDEEP
qt
mayonnaise_clinic
mayonnaise_clinic

Reputation: 81

Need some clarification regarding this Qt tutorial, can someone help me out?

I'm guessing the answers to these questions will be very simple to anyone familiar with Qt. I'm trying to follow this intro tutorial for Qt: http://doc.qt.nokia.com/4.7-snapshot/gettingstartedqt.html. I get it up until the part that I've taken this screenshot for:

http://i160.photobucket.com/albums/t182/thinkpad20/qtintro.jpg

I understand these two code blocks well enough, but if I implement the widget as a class like they show here, what should I be putting in the main function of my code? It doesn't say anywhere. Also, when I try to compile this code, I get a "undefined reference to 'vtable for Notepad'" error. Can anyone help me out?

Upvotes: 1

Views: 140

Answers (1)

cgmb
cgmb

Reputation: 4424

undefined reference to 'vtable for Notepad' almost certainly means you're not linking in the moc-generated files. The Qt docs mention it as a common mistake.

As for what to include in main, it normally involves the creation of an Application and a GUI element, then calling exec on the application. At its most basic, it might look like this:

#include <QApplication>
#include "notepad.h"
int main(int argc, char *argv[])
{
   QApplication app(argc, argv);
   Notepad mainWindow;
   mainWindow.show();
   return app.exec();
}

Upvotes: 3

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