Qt and openGl

[miivers]

Hello new user on the forum here.

So we started with openGL on my school this week and instead of using glut I am giving Qt a shot.

The thing I can seem to get a good answer on is how should I use openGL in Qt if I want to make a basic gameEngine out of it? So fare what I have seen of code examples is the use of QGLWidgets.

Basically what I have is:

#ifndef WINDOWWIDGET_H
#define WINDOWWIDGET_H
#include "player.h"
#include <QtOpenGl/QGLWidget>
 
class WindowWidget : public QGLWidget
{
public:
	WindowWidget(QWidget *parent = NULL);
	~WindowWidget();
 
protected:
	Player mPLayer;
	void initializeGL();
    void resizeGL(int w, int h);
    void paintGL();
    void mousePressEvent(QMouseEvent *event);
    void mouseMoveEvent(QMouseEvent *event);
    void keyPressEvent(QKeyEvent *event);
};
 
#endif

#ifndef WINDOWWIDGET_H
#define WINDOWWIDGET_H
#include "player.h"
#include <QtOpenGl/QGLWidget>

class WindowWidget : public QGLWidget
{
public:
	WindowWidget(QWidget *parent = NULL);
	~WindowWidget();

protected:
	Player mPLayer;
	void initializeGL();
    void resizeGL(int w, int h);
    void paintGL();
    void mousePressEvent(QMouseEvent *event);
    void mouseMoveEvent(QMouseEvent *event);
    void keyPressEvent(QKeyEvent *event);
};

#endif

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There is one problem with this code. The paintGL() function is only called when the window gets focus again.

So my questions are:
- Is QGLWidgets what I should use?
- What do I have to do to make a update function that runs all the time?

Michael

[robertson1]

You can use a QTimer to control updates.

I found the follwing helpful when trying to learn openGL with Qt:

http://www.digitalfanatics.org/projects/qt_tutorial/chapter14.html

Alernatively you might also want to have a look at Qt/3D