[Qt-interest] GLEW library

[Oliver.Knoll at comit.ch]

ami guru wrote on Sunday, February 22, 2009 6:54 PM:

> ..
> I have subclassed the glwidget and included the glew header file
> before the inclusion of QGLWidget

I also once compared the GLEW vs GLEE (http://elf-stone.com/glee.php) which basically provide the same functionality and ended up using GLEE.

The following compiles without problems within my Qt OpenGL app:

// MyViewer.h
#include <GL/GLee.h>
...
#include <QtOpenGL/QGLWidget>

class MyViewer : public QGLWidget {
  ...
};

// MyViewer.cpp
#include <GL/GLee.h>
...
#include <QtOpenGL/QGLWidget>

MyViewer::MyViewer(QWidget *parent)
: QGLWidget(parent) {
  ...
}

Note that I always #included the GLee.h library first - maybe you can derive some useful hints from that for your case (GLEW) as well. Or switch to GLEE ;) (which also provides "lazy-init", that is, you don't need to call any "init" method explicitly - the only dependency on GLEE in your code is the #include <GL/GLee.h> statement :)

Cheers, Oliver

-- 
Oliver Knoll
Dipl. Informatik-Ing. ETH
COMIT AG - ++41 79 520 95 22