Bonjour,

J'ai créé une application Qt4.7.0 + Ogre1.7.1 qui fonctionne parfaitement, cependant lorsque je ferme la fenêtre, le process de l'application dans le gestionnaire de tâches ne se ferme pas.
Savez-vous pourquoi ?

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#ifndef __OgreWidget_h_
#define __OgreWidget_h_
 
#include <QtGui>
 
#include <OgreCamera.h>
#include <OgreEntity.h>
#include <OgreLogManager.h>
#include <OgreRoot.h>
#include <OgreViewport.h>
#include <OgreSceneManager.h>
#include <OgreRenderWindow.h>
#include <OgreConfigFile.h>
 
#include "Cameras/CInternalCamera.h"
#include "Cameras/CExternalCamera.h"
 
class OgreWidget : public QWidget, public Ogre::FrameListener
{
public:
    OgreWidget(void);
    virtual ~OgreWidget(void);
 
	void setBackgroundColor(QColor c);
 
protected:
    virtual bool setup();
    virtual bool configure(void);
	virtual void closeApplication();
    virtual void chooseSceneManager(void);
    virtual void createCamera(void);
    virtual void createFrameListener(void);
    virtual void createScene(void);
    virtual void destroyScene(void);
    virtual void createViewports(void);
    virtual void setupResources(void);
    virtual void createResourceListener(void);
    virtual void loadResources(void);
 
    // Ogre::FrameListener
    virtual bool frameRenderingQueued(const Ogre::FrameEvent& evt);
 
	virtual void moveEvent(QMoveEvent *e);
    virtual void paintEvent(QPaintEvent *e);
    virtual void resizeEvent(QResizeEvent *e);
    virtual void showEvent(QShowEvent *e);
	virtual void closeEvent(QCloseEvent *e);
 
	virtual void mouseMoveEvent(QMouseEvent *e);
	virtual void mousePressEvent(QMouseEvent *e);
	virtual void mouseReleaseEvent(QMouseEvent *e);
 
	virtual void keyPressEvent(QKeyEvent *e);
	virtual void keyReleaseEvent(QKeyEvent *e);
	QPaintEngine * paintEngine() const;
 
private:
    Ogre::Root *mRoot;
	ACamera *mCamera;
	Ogre::Viewport *mViewport;
    Ogre::SceneManager* mSceneMgr;
    Ogre::RenderWindow* mWindow;
    Ogre::String mResourcesCfg;
    Ogre::String mPluginsCfg;
	QPoint mMouseLastPos;
 
    // OgreBites
    bool mCursorWasVisible;                    // was cursor visible before dialog appeared
    bool mShutDown;
};
 
#endif // #ifndef __OgreWidget_h_
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#include "OgreWidget.h"
 
//-------------------------------------------------------------------------------------
OgreWidget::OgreWidget(void) :
	mRoot(0),
    mCamera(0),
    mSceneMgr(0),
    mWindow(0),
    mResourcesCfg(Ogre::StringUtil::BLANK),
    mPluginsCfg(Ogre::StringUtil::BLANK),
    mCursorWasVisible(false),
    mShutDown(false),
	mMouseLastPos(0, 0)
{
	setAttribute(Qt::WA_OpaquePaintEvent);
	setAttribute(Qt::WA_PaintOnScreen);
	setMinimumSize(160,120);
	setFocusPolicy(Qt::ClickFocus);
}
 
//-------------------------------------------------------------------------------------
OgreWidget::~OgreWidget(void)
{
 
}
//-------------------------------------------------------------------------------------
bool OgreWidget::configure(void)
{
    // Show the configuration dialog and initialise the system
    // You can skip this and use root.restoreConfig() to load configuration
    // settings if you were sure there are valid ones saved in ogre.cfg
    if(mRoot->restoreConfig() || mRoot->showConfigDialog())
    {
        // If returned true, user clicked OK so initialise
        // Here we choose to let the system create a default rendering window by passing 'true'
        mWindow = mRoot->initialise(true, "OgreWidget");
 
        return true;
    }
    else
    {
        return false;
    }
}
void OgreWidget::closeApplication()
{
	destroyScene();
	if(mWindow)
	{
		mWindow->removeAllViewports();
	}
	if(mRoot)
	{
		if(mSceneMgr)
		{
			mRoot->detachRenderTarget(mWindow);
			mRoot->destroySceneManager(mSceneMgr);
		}
	}
    delete mRoot;
}
//-------------------------------------------------------------------------------------
void OgreWidget::chooseSceneManager(void)
{
    // Get the SceneManager, in this case a generic one
    mSceneMgr = mRoot->createSceneManager(Ogre::ST_GENERIC);
}
//-------------------------------------------------------------------------------------
void OgreWidget::createCamera(void)
{
	mCamera = new CInternalCamera(mSceneMgr);
}
//-------------------------------------------------------------------------------------
void OgreWidget::createFrameListener(void)
{
/*
    size_t windowHnd = 0;
    std::ostringstream windowHndStr;
 
    mWindow->getCustomAttribute("WINDOW", &windowHnd);
    windowHndStr << windowHnd;
    pl.insert(std::make_pair(std::string("WINDOW"), windowHndStr.str()));
*/
	Ogre::NameValuePairList viewConfig;
	Ogre::String widgetHandle;
#ifdef Q_WS_WIN
	widgetHandle = Ogre::StringConverter::toString((size_t)((HWND)winId()));
#else
	QWidget *q_parent = dynamic_cast <QWidget *> (parent());
	QX11Info xInfo = x11Info();
 
	widgetHandle = Ogre::StringConverter::toString ((unsigned long)xInfo.display()) +
		":" + Ogre::StringConverter::toString ((unsigned int)xInfo.screen()) +
		":" + Ogre::StringConverter::toString ((unsigned long)q_parent->winId());
#endif
	viewConfig["externalWindowHandle"] = widgetHandle;
	mWindow = mRoot->createRenderWindow("Ogre rendering window", width(), height(), false, &viewConfig);
 
    mRoot->addFrameListener(this);
}
//-------------------------------------------------------------------------------------
void OgreWidget::createScene(void)
{
	mSceneMgr->setAmbientLight(Ogre::ColourValue(1,1,1));
 
	Ogre::Entity *robotEntity = mSceneMgr->createEntity("Robot", "robot.mesh");
	Ogre::SceneNode *robotNode = mSceneMgr->getRootSceneNode()->createChildSceneNode("RobotNode");
	robotNode->attachObject(robotEntity);
	robotNode->yaw(Ogre::Radian(Ogre::Degree(-90)));
}
//-------------------------------------------------------------------------------------
void OgreWidget::destroyScene(void)
{
}
//-------------------------------------------------------------------------------------
void OgreWidget::createViewports(void)
{
    // Create one viewport, entire window
    mViewport = mWindow->addViewport(mCamera->getOgreCamera());
    mViewport->setBackgroundColour(Ogre::ColourValue(1,0,0));
 
    // Alter the camera aspect ratio to match the viewport
	mCamera->getOgreCamera()->setAspectRatio( Ogre::Real(width()) / Ogre::Real(height()));
}
//-------------------------------------------------------------------------------------
void OgreWidget::setupResources(void)
{
    // Load resource paths from config file
    Ogre::ConfigFile cf;
    cf.load(mResourcesCfg);
 
    // Go through all sections & settings in the file
    Ogre::ConfigFile::SectionIterator seci = cf.getSectionIterator();
 
    Ogre::String secName, typeName, archName;
    while (seci.hasMoreElements())
    {
        secName = seci.peekNextKey();
        Ogre::ConfigFile::SettingsMultiMap *settings = seci.getNext();
        Ogre::ConfigFile::SettingsMultiMap::iterator i;
        for (i = settings->begin(); i != settings->end(); ++i)
        {
            typeName = i->first;
            archName = i->second;
            Ogre::ResourceGroupManager::getSingleton().addResourceLocation(
                archName, typeName, secName);
        }
    }
}
//-------------------------------------------------------------------------------------
void OgreWidget::createResourceListener(void)
{
 
}
//-------------------------------------------------------------------------------------
void OgreWidget::loadResources(void)
{
    Ogre::ResourceGroupManager::getSingleton().initialiseAllResourceGroups();
}
//-------------------------------------------------------------------------------------
bool OgreWidget::setup(void)
{
    mRoot = new Ogre::Root(mPluginsCfg);
 
    setupResources();
 
    bool carryOn = configure();
    if (!carryOn) return false;
 
    chooseSceneManager();
    createCamera();
    createViewports();
 
    // Set default mipmap level (NB some APIs ignore this)
    Ogre::TextureManager::getSingleton().setDefaultNumMipmaps(5);
 
    // Create any resource listeners (for loading screens)
    createResourceListener();
    // Load resources
    loadResources();
 
    // Create the scene
    createScene();
 
    createFrameListener();
 
    return true;
};
//-------------------------------------------------------------------------------------
bool OgreWidget::frameRenderingQueued(const Ogre::FrameEvent& evt)
{
    if(mWindow->isClosed())
        return false;
 
    if(mShutDown)
        return false;
 
    return true;
}
//-------------------------------------------------------------------------------------
void OgreWidget::moveEvent(QMoveEvent *e)
{
	QWidget::moveEvent(e);
 
	update();
}
//-------------------------------------------------------------------------------------
void OgreWidget::paintEvent(QPaintEvent *e)
{
	mRoot->_fireFrameStarted();
	mWindow->update();
	mRoot->_fireFrameEnded();
 
	e->accept();
}
//-------------------------------------------------------------------------------------
void OgreWidget::resizeEvent(QResizeEvent *e)
{
	QWidget::resizeEvent(e);
 
	if(e->isAccepted())
	{
		const QSize &newSize = e->size();
		if(mWindow)
		{
			mWindow->resize(newSize.width(), newSize.height());
		}
		if(mCamera)
		{
			Ogre::Real aspectRatio = Ogre::Real(newSize.width()) / Ogre::Real(newSize.height());
			mCamera->getOgreCamera()->setAspectRatio(aspectRatio);
		}
	}
	update();
}
//-------------------------------------------------------------------------------------
void OgreWidget::showEvent(QShowEvent *e)
{
#ifdef _DEBUG
    mResourcesCfg = "resources_d.cfg";
    mPluginsCfg = "plugins_d.cfg";
#else
    mResourcesCfg = "resources.cfg";
    mPluginsCfg = "plugins.cfg";
#endif
 
    if (!setup())
        return;
 
    mRoot->startRendering();
 
    // clean up
    destroyScene();
	QWidget::showEvent(e);
}
//-------------------------------------------------------------------------------------
void OgreWidget::closeEvent(QCloseEvent *e)
{
	closeApplication();
	QWidget::close();
}
//-------------------------------------------------------------------------------------
void OgreWidget::setBackgroundColor(QColor c)
{
	if(mViewport)
	{
		Ogre::ColourValue ogreColour;
		ogreColour.setAsARGB(c.rgba());
		mViewport->setBackgroundColour(ogreColour);
	}
	update();
}
//-------------------------------------------------------------------------------------
void OgreWidget::mouseMoveEvent(QMouseEvent *e)
{
	if ( e->buttons().testFlag(Qt::RightButton) )
	{
		QMessageBox::information(0, "INFO", "test");
		QPoint currentPos = e->pos();
		QPoint movement = currentPos - mMouseLastPos;
		mCamera->motion(movement.x(), movement.y());
		mMouseLastPos = currentPos;
	}
}
//-------------------------------------------------------------------------------------
void OgreWidget::mousePressEvent(QMouseEvent *e)
{
 
}
//-------------------------------------------------------------------------------------
void OgreWidget::mouseReleaseEvent(QMouseEvent *e)
{
 
}
//-------------------------------------------------------------------------------------
void OgreWidget::keyPressEvent(QKeyEvent *e)
{
	switch(e->key())
	{
	case Qt::Key_Escape:
		mShutDown = true;
		break;
	case Qt::Key_Z:
		//mDirection.z = -1;
		break;
	case Qt::Key_S:
		//mDirection.z = 1;
		break;
	case Qt::Key_Q:
		//mDirection.x = -1;
		break;
	case Qt::Key_D:
		//mDirection.x = 1;
		break;
	case Qt::Key_PageUp:
		//mDirection.y = 1;
		break;
	case Qt::Key_PageDown:
		//mDirection.y = -1;
		break;
	}
 
	e->accept();
}
//-------------------------------------------------------------------------------------
void OgreWidget::keyReleaseEvent(QKeyEvent *e)
{
	switch(e->key())
	{
	case Qt::Key_Z:
		//mDirection.z = 0;
		break;
	case Qt::Key_S:
		//mDirection.z = 0;
		break;
	case Qt::Key_Q:
		//mDirection.x = 0;
		break;
	case Qt::Key_D:
		//mDirection.x = 0;
		break;
	case Qt::Key_PageUp:
		//mDirection.y = 0;
		break;
	case Qt::Key_PageDown:
		//mDirection.y = 0;
		break;
	}
 
	e->accept();
}
//-------------------------------------------------------------------------------------
QPaintEngine * OgreWidget::paintEngine() const
{
	return 0;
}
//-------------------------------------------------------------------------------------