Rui, You need to extend QQuickItem and create your scene graph.
Open QtCreator and search for scene graph examples. Take a special look to "Scene Graph - Custom Geometry” Best, Nuno > On 15 Apr 2021, at 11:25, Rui Oliveira <rui...@hotmail.com> wrote: > > Hey, > As per the title implies, I would like some comments on the GUI offerings Qt > currently has. > > I'll share my own assessments and needs, and I'd like very much to hear your > comments. > > So: > > I want to write a desktop application. This desktop application would not > involve displaying lists of things, which seems to be what all > tutorials/guides/courses are about, especially on the QML side. This > application would involve some "custom graphics", namely a FFT display, and a > "waterfall" display. You can google for "GQRX" and you'll know what I want. > > > > And then I looked at Qt, and: > > First thing I have looked at were QWidgets. I feel comfortable staying in the > C++ domain. To implement said custom widgets I gave a shot to a class > inheriting from QOpenGLWidget. And honestly, the experience wasn't bad at > all! > > But, I feel very hesitant to start a project on QWidgets. It feels like > starting a project on dead tech. Although, I did watch Giuseppe D’Angelo's > talk in Qt Desktop Days 2020 (slides [1] > <https://www.qtdesktopdays.com/wp-content/uploads/2020/09/keynote.pdf>), and > looking at slide 19, there seem to be prospects of evolution. My attention > goes especially to "Accelerate widget rendering & compositing through RHI". > Will QWidgets really have a RHI backend? And a QRhiWidget option? Or maybe > just QWidget and everything HW accelerated? I can dream... > > I know QWidgets are no longer "interesting". Even KDE moved on from them... > And I understand that's not where the money is for now... Still, I'd like > some comments. > > Now, QML. > > Slide 25 of the same talk mentions native desktop styling for QQC2. I can't > find documentations on this. Are they already available yet? Also, in the > previous slide, "Planned in Qt 6.x: C++ API for Qt Quick elements". Does this > mean Qt Quick *without* QML? > > Also, in QML it seems to be very hard to have anything native-looking. I > looked at Qt Labs Platform [2] > <https://doc.qt.io/qt-6/qtlabsplatform-index.html> and things like the right > click menu aren't available on Windows, for example. Are there plans to > expand this? > > > > Either way, I'm quite divided. I'd like to hear your thoughts and > recommendations. > > In summary, it would seem that my options for the desktop with Qt are two > self-competing technologies: one "half-dead", one "3/4-baked"... I'd really > love to be wrong. > > > > Thank you for your time, > Rui > > > > For those reading in plain text: > [1] https://www.qtdesktopdays.com/wp-content/uploads/2020/09/keynote.pdf > <https://www.qtdesktopdays.com/wp-content/uploads/2020/09/keynote.pdf> > [2] https://doc.qt.io/qt-6/qtlabsplatform-index.html > <https://doc.qt.io/qt-6/qtlabsplatform-index.html> > _______________________________________________ > Interest mailing list > Interest@qt-project.org > https://lists.qt-project.org/listinfo/interest
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