Java jogl applet油漆不起作用？

Question

My jogl applet screen is blank. I have this for my paint code:

 public void paint(Graphics g){
        canvas.update(g);
    }

if I add g.fillRect(0,0,50,50); to it it'll draw the filled rect, but still not the jogl stuff.

Answer 1

I'm not exactly clear what the rest of your program looks like. However you should be aware that JOGL components don't draw like other components; in other words if this code is on an instance of GLAutoDrawable (ie GLJPanel or GLCanvas) then it won't do anything useful.

What you need to do is create a GLEventListener and attach it to the GLAutoDrawable. Then you need to implement display (GLDrawable drawable) with code that draws your 3D scene.

This tutorial is useful in getting you started.