Layering a QGLWidget on top of a qwidget
I'm writing what is essentially a multi-trace oscilloscope viewer. It appears that the most efficient way to draw the traces of the signal is to use raw OpenGL draw commands, i.e., in my paintGL() :
glVertexPointer(2, GL_FLOAT, 0, data.constData());
Ideally, I want to have the borders and tick marks for this line (which is constantly moving) drawn in a QWidget that lives below the qglwidget. However, I can't seem to get this to work. If I don't make the QGLWidget draw a background, I see through to my desktop underneath. Any hints at how to stack a transparent QGLWidget on top of a QWidget?
Why not just use OpenGL to also draw the borders and tick marks?
That's the current implementation, but it ends up being somewhat klugy. Ideally, I'd like to make the background stuff easily modifiable/"skinable".