QGLWidget doenst work on Mac

[john_god]

I have a QGLWidget wich work nicely on Windows and Linux, shows a qglwidget with black ground color and some graphs, but fails on Mac, I only get a blank windows. I have events like:

void mousePressEvent(QMouseEvent *event);
    void mouseReleaseEvent (QMouseEvent * event);
    void mouseMoveEvent(QMouseEvent *event);
    void wheelEvent(QWheelEvent * event );
    bool event(QEvent *event);
    void keyPressEvent(QKeyEvent *event);
    void timerEvent(QTimerEvent *event);

void mousePressEvent(QMouseEvent *event);
    void mouseReleaseEvent (QMouseEvent * event);
    void mouseMoveEvent(QMouseEvent *event);
    void wheelEvent(QWheelEvent * event );
    bool event(QEvent *event);
    void keyPressEvent(QKeyEvent *event);
    void timerEvent(QTimerEvent *event);

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event() is causing the problem. If I remove it it will work. If I use it, even without any code in it, the blank QGLWidget will show. Either case, the program compiles and runs without errors. I looked for mac qglwidget limitations but didnt find nothing related to this. Any ideas ?

[wysota]

Do you always call the base class implementation?

[john_god]

I call a derived class GLGraph3D_fxy:

class Graph3D_Base_GLWidget : public QGLWidget
{
    Q_OBJECT
 
public:
    Graph3D_Base_GLWidget();
    ~Graph3D_Base_GLWidget();
 
    void initializeGL();
    virtual void paintGL();
    void axis3D();
 
 
    void resizeGL(int width, int height);
 
    void AutoRotate();
 
 
    void mousePressEvent(QMouseEvent *event);
    void mouseReleaseEvent (QMouseEvent * event);
    void mouseMoveEvent(QMouseEvent *event);
    void wheelEvent(QWheelEvent * event );
    bool event(QEvent *event); //function causing the problem
    void keyPressEvent(QKeyEvent *event);
    void timerEvent(QTimerEvent *event);
    ...
 
};
 
class GLGraph3D_fxy  : public Graph3D_Base_GLWidget
{
     Q_OBJECT
 
public:
    GLGraph3D_fxy();
    ~GLGraph3D_fxy();
 
    virtual void paintGL();
 
    ...
    void contextMenuEvent(QContextMenuEvent * event ) ;
    ...
 
 
};
 
....
 
bool Graph3D_Base_GLWidget::event(QEvent *event)
{
 
    if (event->type() == QEvent::WindowDeactivate)
    {
        if (TimerRotate != 0)
        {
            killTimer(TimerRotate);
            TimerRotate = 0;
        }
 
        return true;
    }
 
    return QWidget::event(event);
 
}

class Graph3D_Base_GLWidget : public QGLWidget
{
    Q_OBJECT

public:
    Graph3D_Base_GLWidget();
    ~Graph3D_Base_GLWidget();

    void initializeGL();
    virtual void paintGL();
    void axis3D();


    void resizeGL(int width, int height);

    void AutoRotate();


    void mousePressEvent(QMouseEvent *event);
    void mouseReleaseEvent (QMouseEvent * event);
    void mouseMoveEvent(QMouseEvent *event);
    void wheelEvent(QWheelEvent * event );
    bool event(QEvent *event); //function causing the problem
    void keyPressEvent(QKeyEvent *event);
    void timerEvent(QTimerEvent *event);
    ...

};

class GLGraph3D_fxy  : public Graph3D_Base_GLWidget
{
     Q_OBJECT

public:
    GLGraph3D_fxy();
    ~GLGraph3D_fxy();

    virtual void paintGL();

    ...
    void contextMenuEvent(QContextMenuEvent * event ) ;
    ...


};

....

bool Graph3D_Base_GLWidget::event(QEvent *event)
{

    if (event->type() == QEvent::WindowDeactivate)
    {
        if (TimerRotate != 0)
        {
            killTimer(TimerRotate);
            TimerRotate = 0;
        }

        return true;
    }

    return QWidget::event(event);

}

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I also just notice if I resize the blank window it will turn black and display the graphs correctly. I'm guessing I have some broken code, or some initialization issue, but it puzzles me that it works good on windows and linux

[wysota]

So what is the contents of your event() implementation?

[john_god]

Sorry I didnt explain me. I wrote event() but is the event(QEvent *event) wich is causing the problem.

bool Graph3D_Base_GLWidget::event(QEvent *event)
{
 
    if (event->type() == QEvent::WindowDeactivate)
    {
        if (TimerRotate != 0)
        {
            killTimer(TimerRotate);
            TimerRotate = 0;
        }
 
        return true;
    }
 
    return QWidget::event(event);
}

bool Graph3D_Base_GLWidget::event(QEvent *event)
{

    if (event->type() == QEvent::WindowDeactivate)
    {
        if (TimerRotate != 0)
        {
            killTimer(TimerRotate);
            TimerRotate = 0;
        }

        return true;
    }

    return QWidget::event(event);
}

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I only have this implemented in the base class

[wysota]

Why do you prevent Qt from handling WindowDeactivate on its own?

[john_god]

Hi Wysota. My mistake. I removed the line with "return true;" so Qt could handle it.
Anyway I found the problem, I was returning QWidget::event(event) instead of returning QGLWidget::event(event);
Dont know why this worked for windows and linux and not on mac, but it was wrong for all.
It works now. thanks