CODEWITHSUNDEEP
c++windowsqtdirectx
Tom J Nowell
Tom J Nowell

Reputation: 9981

Using Qt with DirectX?

What exactly are my options? I have programs I need to write in OpenGL and DirectX, and I'd like to use Qt for OpenGL, and not have to re-implement half my program for the DirectX components of my task.

I've looked on Google and I have found references to people complaining about Direct3D being a dependency of Qt, and people talking about implementing QD3DWidget sub-classing QWidget in a similar fashion to QGLWidget, yet nobody talked about how to implement it or where any examples are.

I need help. I want to know if it is possible? What would I need to do to get it working? Has it been done before?

Upvotes: 9

Views: 26011

Answers (3)

Chenna V
Chenna V

Reputation: 10503

its pretty straightforward than I thought,

-> Create a QWidget
-> Override paintEngine() method, does nothing, just returns NULL
-> Assign HWND to widget->winId()

    #ifdef USE_QTGUI
        QApplication a(argc, argv);
        CD3DWidget wndw;    wndw.show();    wndw.resize(1280,960);
        hWnd = wndw.winId();
    #else
        hWnd = CreateAppWindow(name,300,300);
    #endif

       //CD3DWidget class contains only the following definitions
    CD3DWidget::CD3DWidget(QWidget * parent):QWidget(parent){      }
    QPaintEngine *CD3DWidget::paintEngine (){          return NULL;        }

Thanks,

CV

Upvotes: 16

Extrakun
Extrakun

Reputation: 19325

For all its worth, here is how to get Ogre3D's output to a Qt 4.5 window. Basically, you grab a rendering surface and you use it to render the output. This is a "Qt in D3D/OpenGL application approach".

Here are OpenGL examples with Qt 4.5 using OpenGL window.

If I understand it correctly, the Direct3D support is experimental and is only used for painting of windows.

Upvotes: 1

TopSergey
TopSergey

Reputation: 29

List of changes:

Qt 4.6 introduces many new features and improvements as well as bugfixes over the 4.5.x series.

......................

  • The experimental Direct3D paint engine has been removed. The reason for this is that Nokia focuses on OpenGL for desktop hardware accelerated rendering.

......................

Upvotes: 2

Related Questions