[Interest] Embedding QWindow

Ian Monroe ian at monroe.nu
Mon Aug 4 23:58:27 CEST 2014

On Mon, Aug 4, 2014 at 1:53 PM, rap <rap at dlc.fi> wrote:
> From: Ian Monroe
> On Mon, Aug 4, 2014 at 12:32 PM, rap <rap at dlc.fi> wrote:
>>> Why do you want to use QWindow if you are using QWidget-based windows?
>>>>  QGLWidget seems like the correct solution.
>>> Your question arises a question of the purpose and usefulness of QWindow
>>> class regarding opengl if you can not easily create UI controls to go
>>> with
>>> it, at least in a SDI application.   I'll check how things turn out with
>>> MDI
>>> and QWindow for child wnds.
>> Sure you can create UI controls with QWindow, just use QML and Qt
>> Quick Controls.You could do your own OpenGL stuff by subclassing
>> QQuickItem. That's what QWindow is for. It's not meant to be poor
>> replacement for QGLWidget.
>> Ian
> OK, I'm not familiar with QML & QtQuick at all yet, only quite recently
> started using Qt as an alternative for MS. If those support OpenGL core
> profile 4+ then I'll have to take a look when I have the time, for now I
> have to stick with Qt Creator.

So the context is that QtWidgets (QWidget, QMainWindow etc) are the
traditional but still fine-to-use UI component technology, and QML is
the newer tech. The QML tech stack includes QWindow; QtWidgets doesn't
really. You can mix QtWidgets and QWindow/QML (with that
createContainerWidget method or QQuickWidget), but you shouldn't
unless you have a reason to, and it sounds like you don't. If you want
to use QtWidgets then you should probably just use QGLWidget.


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