[Closed duplicate] How do I add the About box to my Qt 5 project?

[te777]

I have just completed my first Qt 5 project and I want to add an About dialog. Is there a default, and how do you use it? If not, what's the best way to add one and edit it and display its content using the Help menu action? Any help would be appreciated. Thanks in advance.

[closed, koahnig]

[lgeyer]

Duplicate of http://qt-project.org/forums/viewthread/24446/