[Interest] Embedding QWindow

[rap]

From: Ian Monroe
...
On Mon, Aug 4, 2014 at 8:28 AM, rap <rap at dlc.fi> wrote:
> > Hello,
> >
> > I'm trying to create an initial OpenGL project for porting some Visual Studio 2010 win32 OpenGL learning stuff to Qt 5.3.1. I 
> > wonder
> > if it is somehow possible to embed Opengl classes derived from QWindow as the centralwidget to QMainWindow? So far I have been 
> > using
> > a QGLWidget as the centralwidget.

> See the "OpenGL Window Example".

> Ian

Thanks Ian,  I have studied that example but it does not give an answer.

What I'm trying accomplish is to have a  MainWindow (derived from QApplication / QWidget) for user input, (buttons etc.) and then a 
QWindow derived class as the OpenGL drawing surface and also to be the centralwidget in the MainWindow . However, I haven't been 
able to get this to work (probably because QWindow is not a QWidget based class and thus won't be accepted as central*widget*).  I 
have read that there will be a QOpenGLWidget in future versions that may be just what I'm after, but for now I'm trying to find out 
if there is a workaround until that happens.

This is how I have been doing things so far, the myGLWidget is currently QGLWidget based, and now I want/need to replace it with a 
QWindow based class. The MainWindow constructor:

MainWindow::MainWindow(QWidget *parent) :  QMainWindow(parent)
{
    ui.setupUi(this);
    glw = new myGLWidget();
    setCentralWidget(glw);
    glw->setAttribute( Qt::WA_DeleteOnClose );
...
}

All my OpenGL stuff is in the glw instance, using signals from MainWindow/user controls but mouse input directly.

Thanks,
Risto