Add new, C++ class, can not find QGLWidget in Base class scroll list

[errorbyerrors]

Hi, I am a newbie and following opengl tutorial in below link,

http://www.thasler.org/blog/?p=10

but, my Qt Creator do not showing QGLWidget in C++ Class Wizard,

do I need to install something? or is there any steps that I must do before adding new class?

Currently, I am working on mac os.

[ZapB]

The wizard doesn't show QGLWidget unfortunately. Just choose QWidget and change it by hand after the class has been created.