View Vs Scene

Swati777999

What is the difference between view and scene in Qt? Can you provide an example to differentiate both?

sierdzio

You mean difference between qmlscene application and QQuickView class?

Swati777999

About this question, I am not specific about any module or class of Qt. I just want to know, in general, how are these terminologies, in the language of Qt, differ from each other?

sierdzio

Since I don't know what we are talking about, I can't answer with anything meaningful, sorry. Each API within Qt has it's own nomenclature, it's hard to generalize like that.

In QtWidget world, or rather in QGraphicsView, a scene is the whole "canvas" on which you draw. A view is a single, well, view of that scene - like a viewfinder peeking into a part of the scene - does not need to show everything.

In QML world, there is no such distinction. There are multiple views and scenes here:

qmlscene is used to display QML-only content (no C++ necessary)
scene graph is the technology or framework used to draw and display QML content efficiently using hardware-accelerated graphics
QQuickView is a C++ element used to display QML content
various view components (GridView, ListView) are used to display collections of items

In Qt3D, QtQuick3D worlds - I'm sure there are scenes and views here as well, but I know nothing about those modules.

There, that's a quick overview of all views and scenes I can think of.