QGLWidget error

[sruthy]

hai all,
I'm completely new to Qt
Iwant a QGLWidget in my project,
so I added the following code:
@GLWidget *openGL ;
openGL=new GLWidget(this);@
When I compiled this I got the following error:
fatal error C1083: Cannot open include file: 'QGLWidget': No such file or directory
Can anybody help me with this?

[ludde]

Perhaps you forgot to add @QT += opengl@ to your .pro file?

[sruthy]

I've added it,but no change.It's the same error

[mlong]

Does it work if you use @#include <QtOpenGL/QGLWidget>@ instead of just @#include <QGLWidget>@ ?

[Thanatos.jsse]

[quote author="mlong" date="1329495288"]Does it work if you use @#include <QtOpenGL/QGLWidget>@ instead of just @#include <QGLWidget>@ ?[/quote]

What's the difference between this declarations?

BR,

[sruthy]

Hai all,thanks for the reply.
It was due to the missing of include file ,
so I added the following in my include
..\Qt\4.8.0\include\QtOpenGL
and the foll: line in my C/C++->Preprocessor
QT_OPENGL_LIB
and the foll: line in my Linker->Input
c:\Qt\4.8.0\lib\QtOpenGLd4.lib
and I got it working.

[yupifourbi]

I am newbie.
Which file(s) should I edit to add those lines as sruthy suggested?
Thanks in advance.