I was trying to compile a Qt and OpenGL program under Code::Blocks in Ubuntu 10.04. I get the 'undefined reference to 'vtable for GLWidget'
#ifndef _GLWIDGET_H
#define _GLWIDGET_H
#include <QtOpenGL/QGLWidget>
#include "stdlib.h"
class GLWidget : public QGLWidget {
Q_OBJECT // must include this if you use Qt signals/slots
public:
GLWidget(QWidget *parent = 0);
~GLWidget();
protected:
void initializeGL();
void resizeGL(int w, int h);
void paintGL();
void keyPressEvent(QKeyEvent *event);
};
#endif /* _GLWIDGET_H */
I borrowed the code from this guy to see if it works, because mine wasn't working because of the same reason. Code
And here is the GLWidget.cpp:
#include <QtGui/QMouseEvent>
#include "glwidget.h"
GLWidget::GLWidget(QWidget *parent) : QGLWidget(parent) {
setMouseTracking(true);
}
GLWidget::~GLWidget()
{
}
void GLWidget::initializeGL() {
...
}
void GLWidget::resizeGL(int w, int h) {
...
}
void GLWidget::paintGL() {
...
}
void GLWidget::keyPressEvent(QKeyEvent* event) {
...
}
}
I removed the code from the GL part to keep it shorter. Should you need it, I can always post it up.
#include <QtGui/QApplication>
#include <QtOpenGL/QGLWidget>
#include "glwidget.h"
int main(int argc, char *argv[]) {
QApplication app(argc, argv);
GLWidget window;
window.resize(800,600);
window.show();
return app.exec();
}