Ubuntu – Ubuntu Touch HTML5 app Orientation lock

The Applications templates are not Ubuntu Touch templates, those are actually just Qt Creator templates, you can't use them for Ubuntu Apps.

When you make an Ubuntu HTML5 app you can use standard JavaScript mouse event handlers like onmousemove, onmouseover and onmouseout although right now those don't work very well. Ubuntu Touch is in rapid development though so keep an eye out for updates.

EDIT: Use touch event handlers as specified in the W3C Specification

You can't really quit a HTML5 app from the app itself. It's not really a problem since if you had a chance to play with other apps for Ubuntu Touch you might have noticed that none of them have an exit button. On Ubuntu the idea is that you just slide apps into the background.

If you want to make a C++ application with a HTML5 UI you should read the answer to this question.

When starting a new project, you need to select one of the "QML App with C++ plugin" templates:

I personally prefer CMake over qmake, but either one will accomplish the same thing.

When the new project wizard completes, you will end up with an application consisting of a QML interface and a QML plugin written in C++. It also serves as a functional example that demonstrates how to invoke slots in QObject classes and pass information back to QML code.