Qt & OpenGl, calling gl-commands within other classes

[KnufflPuffl]

hi, I've searched for this already long time, but couldn't find any solution so far.

The problem is the following thing:

I created a GLWidget which is derived from QGLWidget, in this class I have overriden the method paintGL(), in which I can successfully call the gl commands like glVertex3f(..) and so on. So that works fine.

Now I am trying to make a Cube class, in which I want to make a method like drawCube(...), in which the glCommands for exactly a cube are called. I then want to call the drawCube method in the QGLWidget e.g:

public GLWidget::paintGL()
{
 
  mycube.drawCube(this);  // I am not sure which parameter I should give the cube
 
}

public GLWidget::paintGL()
{

  mycube.drawCube(this);  // I am not sure which parameter I should give the cube

}

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The problem I get is I don't know how to reference the GLWidget, to the Cube class, so I can actually call there its methods. (the glVertex3f(..) for example)

I hope I described my problem clear enough to understand.

Any help is very appreciated, since it would be horrible to writing all the glPaint code in only one method

thanks in advance

[Sabre Runner]

Shouldn't you just reference qgl.h or any other required files in your cube class header so that it'll know these commands?