Problem with OpenGL in Qt 5.7 and is it necessary for 3D object?
Don't wok OpenGL in Qt 5.7. It does not support?
I learned early opengl and don't remember well, so, there are other better and easy way to paint 3D object?
I am not sure but Qt does support OpenGL. I have done my own mesh class using QT 5.5.
There is also Qt3d that provide a lot of tools for 3D.
I try everything , but paint nothing and have not any errors.
Could you send me simple qt project with hello world from OpenGL?
yes QT canvas 3D is nice, it is in qml,but i need c++ in Qt Widget Application
You can get an example from the documentation. For example: http://doc.qt.io/qt-5/qtgui-openglwindow-example.html
oh yes , I am very happy, that it's work. I run twice qmake manually and solve this problem. why does need it for everything ? first to work widget promoting I run it, then to work opengl run it :D I lost two days for this.