自学教程：C++ updateInterface函数代码示例

void InterfaceThread::run(){	DownloadThread *download = new DownloadThread(data);	MainWindow *w = mainWindow();	connect(download, SIGNAL(finished()), w, SLOT(refreshDisplay()));	download->start();	while (download->isRunning()) {		msleep(200);		updateInterface(progress_bar_fraction *100);	}	updateInterface(100);}

std::shared_ptr<InterfaceMap> ThriftConfigApplier::updateInterfaces() {    auto origIntfs = orig_->getInterfaces();    InterfaceMap::NodeContainer newIntfs;    bool changed = false;    // Process all supplied interface configs    size_t numExistingProcessed = 0;    for (const auto& interfaceCfg : cfg_->interfaces) {        InterfaceID id(interfaceCfg.intfID);        auto origIntf = origIntfs->getInterfaceIf(id);        shared_ptr<Interface> newIntf;        auto newAddrs = getInterfaceAddresses(&interfaceCfg);        if (origIntf) {            newIntf = updateInterface(origIntf, &interfaceCfg, newAddrs);            ++numExistingProcessed;        } else {            newIntf = createInterface(&interfaceCfg, newAddrs);        }        updateVlanInterfaces(newIntf ? newIntf.get() : origIntf.get());        changed |= updateMap(&newIntfs, origIntf, newIntf);    }    if (numExistingProcessed != origIntfs->size()) {        // Some existing interfaces were removed.        CHECK_LT(numExistingProcessed, origIntfs->size());        changed = true;    }    if (!changed) {        return nullptr;    }    return origIntfs->clone(std::move(newIntfs));}

void Notebook::editContent(){    oldTitle = titleLine->text();    oldContent = contentText->toPlainText();    updateInterface(EditingMode);}

void AddressBook::editContact(){    oldName = nameLine->text();    oldAddress = addressText->toPlainText();    updateInterface(EditingMode);}

void AddressBook::editContact(){    oldName = nameLine->text();                 //  Сохраняет детали старого контакта перед переключением в режим EditingMode    oldAddress = addressText->toPlainText();    //    updateInterface(EditingMode);}

/** * Runs the game! WHOO! */int Game::start() {    game_running = true;    while(window.isOpen()) {        while(game_running) {            sf::Event event;            while(window.pollEvent(event)) {                if(event.type == sf::Event::Closed) {                    window.close();                    game_running = false;                    game_over = true;                }            }            bullets = p.getBullets();            spawnEnemies();            checkInput();            checkBorderCollision(p);            checkEntityCollision();            checkDeath();            updateAnimations();            updateScore();            updateInterface();            updateGameClocks();            for(std::vector<Enemy*>::iterator iter  = enemies.begin(); iter != enemies.end(); ++iter) {                Enemy *eni = *iter;                eni->stalkPlayer(p);            }            window.clear(sf::Color(0,230,0));            Sword * s = p.getSword();            if(s->isSwung()) {                window.draw(s->shape);            }                        window.draw(p.shape);            for(std::vector<Enemy*>::iterator iter  = enemies.begin(); iter != enemies.end(); ++iter) {                Enemy *eni = *iter;                window.draw(eni->shape);            }            for(std::vector<Bullet*>::iterator iter = bullets.begin(); iter != bullets.end(); ++iter) {                Bullet *b = *iter;                window.draw(b->shape);            }            for(std::vector<sf::Drawable*>::iterator iter = interface.begin(); iter != interface.end(); ++iter) {                sf::Drawable *d = *iter;                window.draw(*d);            }            window.display();        }        setupEntities();        game_running = true;    }    return 0;}

MainToolBar::MainToolBar(KActionCollection* collection, QWidget* parent): KToolBar( parent){  setToolButtonStyle(Qt::ToolButtonIconOnly);    toolBarCollection = collection;    addAction( toolBarCollection->action("aim"));  addAction( toolBarCollection->action("record"));  addAction( toolBarCollection->action("play"));  addAction( toolBarCollection->action("pause"));  addAction( toolBarCollection->action("playAfterPause"));  addAction( toolBarCollection->action("stop"));  addSeparator();      timeSlider = new QSlider(this);  timeSlider->setOrientation(Qt::Horizontal);  timeSlider->setMinimum( 0 );        this->addWidget(timeSlider);    this->addSeparator();     updateInterface( Default );  }

void AddressBook::loadFromFile(){    QString fileName = QFileDialog::getOpenFileName(this,        tr("Open Address Book"), "",        tr("Address Book (*.abk);;All Files (*)"));    if (fileName.isEmpty())        return;    else {        QFile file(fileName);        if (!file.open(QIODevice::ReadOnly)) {            QMessageBox::information(this, tr("Unable to open file"),                file.errorString());            return;        }        QDataStream in(&file);        in.setVersion(QDataStream::Qt_4_3);        contacts.empty();   // empty existing contacts        in >> contacts;        QMap<QString, QString>::iterator i = contacts.begin();        nameLine->setText(i.key());        addressText->setText(i.value());    }    updateInterface(NavigationMode);}

void AddressBook::chargerFichier() {    QString nomFichier = QFileDialog::getOpenFileName(this,                                                      tr ("Charger depuis un fichier"),                                                      "",                                                      tr ("Carnet d'adresse (*.abk);;Tous les fichiers (*)"));    if (nomFichier.isEmpty())        return;    else {        QFile fichier (nomFichier);        if (!fichier.open(QIODevice::ReadOnly)) {            QMessageBox::information(this,                                     tr ("Erreur de chargement"),                                     fichier.errorString());            return;        }        QDataStream in (&fichier);        in.setVersion(QDataStream::Qt_4_7);        listeContacts.empty();        in >> listeContacts;        if (listeContacts.isEmpty()) {            QMessageBox::information (this ,                                      tr ("Pas de contacts"),                                      tr ("Aucun contact à importer dans le fichier"));        } else {            QMap<QString , QString>::iterator i = listeContacts.begin();            nomLineEdit->setText(i.key());            adresseTextEdit->setText(i.value());        }    }    updateInterface(NavigationMode);}

void MathOperatorPlugin::changedParam( const OFX::InstanceChangedArgs &args, const std::string &paramName ){	if( paramName == kMathOperatorType )	{		updateInterface();	}}

void AddressBook::cancel(){    ui->nameLine->setText(oldName);    ui->nameLine->setReadOnly(true);    updateInterface(NavigationMode);}

void AddressBook::loadFromFile(){    QString fileName = QFileDialog::getOpenFileName(this,                                                    tr("Open Address Book"), "C:/Users/Max/Google Диск",                                                    tr("Address Book (*.txt);;AllFiles (*)"));    if (fileName.isEmpty())        return;    else {        QFile file(fileName);        if (!file.open(QIODevice::ReadOnly)) {            QMessageBox::information(this, tr("Unable to open file"),                                     file.errorString());            return;        }        QDataStream in(&file);        in.setVersion(QDataStream::Qt_5_5);        contacts.empty();  // очищаем существующие контакты        in >> contacts; // загрузка        if (contacts.isEmpty()) {            QMessageBox::information(this, tr("Нет контактов в файле"),                                     tr("Файл который вы пытантесь открыть не содержит контактов."));        } else {                QMap<QString, QString>::iterator i = contacts.begin(); // последовательно выводим контакты        nameLine->setText(i.key());        addressText->setText(i.value());        }        updateInterface(NavigationMode);    }}

CameraWnd::CameraWnd(): QWidget(){    setMinimumSize( 160, 120 );    //preparation of the vlc command    const char * const vlc_args[] = {              "-I", "dummy", /* Don't use any interface */              "--ignore-config", /* Don't use VLC's config */              "--extraintf=logger", //log anything              "--verbose=2", //be much more verbose then normal for debugging purpose              "--plugin-path=./plugins/" };#ifdef Q_WS_X11    _videoWidget=new QX11EmbedContainer(this);#else    _videoWidget=new QFrame(this);#endif    // [20101215 JG] If KDE is used like unique desktop environment, only use _videoWidget=new QFrame(this);    _volumeSlider=new QSlider(Qt::Horizontal,this);    _volumeSlider->setMaximum(100); //the volume is between 0 and 100    _volumeSlider->setToolTip("Audio slider");    _volumeSlider->setVisible( false );    // Note: if you use streaming, there is no ability to use the position slider    _positionSlider=new QSlider(Qt::Horizontal,this);    _positionSlider->setMaximum(POSITION_RESOLUTION);    _positionSlider->setVisible( false );    QVBoxLayout *layout = new QVBoxLayout;    layout->addWidget(_videoWidget);    layout->addWidget(_positionSlider);    layout->addWidget(_volumeSlider);    setLayout(layout);    _isPlaying=false;    poller=new QTimer(this);    //Initialize an instance of vlc    //a structure for the exception is neede for this initalization    //libvlc_exception_init(&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.    //create a new libvlc instance    _vlcinstance=libvlc_new(sizeof(vlc_args) / sizeof(vlc_args[0]), vlc_args);  //tricky calculation of the char space used    //_vlcinstance=libvlc_new(sizeof(vlc_args) / sizeof(vlc_args[0]), vlc_args,&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.    //raise (&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.    // Create a media player playing environement    _mp = libvlc_media_player_new (_vlcinstance);    //_mp = libvlc_media_player_new (_vlcinstance, &_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.    //raise (&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.    //connect the two sliders to the corresponding slots (uses Qt's signal / slots technology)    connect(poller, SIGNAL(timeout()), this, SLOT(updateInterface()));    connect(_positionSlider, SIGNAL(sliderMoved(int)), this, SLOT(changePosition(int)));    connect(_volumeSlider, SIGNAL(sliderMoved(int)), this, SLOT(changeVolume(int)));    poller->start(100); //start timer to trigger every 100 ms the updateInterface slot}

nite::SkeletonState yarp::dev::OpenNI2DeviceDriverServer::getSkeletonState(int userID) {    updateInterface();#ifdef OPENNI2_DRIVER_USES_NITE2    return OpenNI2SkeletonTracker::getSensor()->userSkeleton[userID-1].skeletonState;#else    return 0;#endif}

/////////// Slots //////////void AddressBook::ajouterContact() {    oldNom = nomLineEdit->text();    oldAdresse = adresseTextEdit->toPlainText();    nomLineEdit->clear();    adresseTextEdit->clear();    updateInterface(AddingMode);}

void AvatarDialog::changeAvatar(){	QPixmap img = misc::getOpenThumbnailedPicture(this, tr("Load Avatar"), 128, 128);	if (img.isNull())		return;	ui->avatarLabel->setPixmap(img);	updateInterface();}

void BusInterfaceItem::setName( const QString& name ) {    beginUpdateConnectionNames();	busInterface_->setName(name);    updateInterface();    emit contentChanged();    endUpdateConnectionNames();}

void AddressBook::submitContact(){    QString name = ui->nameLine->text();    QString address = ui->addressText->toPlainText();    if (name.isEmpty() || address.isEmpty()) {        QMessageBox::information(this, tr("Empty Field"),            tr("Please enter a name and address."));        updateInterface(NavigationMode);        return;    }    if (currentMode == AddingMode) {        if (!contacts.contains(name)) {            contacts.insert(name, address);            QMessageBox::information(this, tr("Add Successful"),                tr("/"%1/" has been added to your address book.").arg(name));        } else {            QMessageBox::information(this, tr("Add Unsuccessful"),                tr("Sorry, /"%1/" is already in your address book.").arg(name));        }    } else if (currentMode == EditingMode) {        if (oldName != name) {            if (!contacts.contains(name)) {                QMessageBox::information(this, tr("Edit Successful"),                    tr("/"%1/" has been edited in your address book.").arg(oldName));                contacts.remove(oldName);                contacts.insert(name, address);            } else  {                QMessageBox::information(this, tr("Edit Unsuccessful"),                    tr("Sorry, /"%1/" is already in your address book.").arg(name));            }        } else if (oldAddress != address) {            QMessageBox::information(this, tr("Edit Successful"),                tr("/"%1/" has been edited in your address book.").arg(name));            contacts[name] = address;        }    }    updateInterface(NavigationMode);}

//-------------------------------------------------------// POI_Editor: Constructor for edit an existing POI//-------------------------------------------------------POI_Editor::POI_Editor(POI *poi_, QWidget *parent)	: QDialog(parent){	setupUi(this);	setModal(false);	setAttribute(Qt::WA_DeleteOnClose);	this->poi = poi_;	modeCreation = false;	setWindowTitle(tr("Point of interest: ")+poi->getName());	updateInterface();}

/** * /brief Initialization * * Initializes the TabsApplet with default parameters */voidTabsApplet::init(){    // applet base initialization    Context::Applet::init();    // create the header label    enableHeader( true );    setHeaderText( i18nc( "Guitar tablature", "Tabs" ) );    // creates the tab view    m_tabsView = new TabsView( this );    // Set the collapse size    setCollapseOffHeight( -1 );    setCollapseHeight( m_header->height() );    setMinimumHeight( collapseHeight() );    setPreferredHeight( collapseHeight() );    // create the reload icon    QAction* reloadAction = new QAction( this );    reloadAction->setIcon( KIcon( "view-refresh" ) );    reloadAction->setVisible( true );    reloadAction->setEnabled( true );    reloadAction->setText( i18nc( "Guitar tablature", "Reload tabs" ) );    m_reloadIcon = addLeftHeaderAction( reloadAction );    m_reloadIcon.data()->setEnabled( false );    connect( m_reloadIcon.data(), SIGNAL(clicked()), this, SLOT(reloadTabs()) );    // create the settings icon    QAction* settingsAction = new QAction( this );    settingsAction->setIcon( KIcon( "preferences-system" ) );    settingsAction->setEnabled( true );    settingsAction->setText( i18n( "Settings" ) );    QWeakPointer<Plasma::IconWidget> settingsIcon = addRightHeaderAction( settingsAction );    connect( settingsIcon.data(), SIGNAL(clicked()), this, SLOT(showConfigurationInterface()) );    m_layout = new QGraphicsLinearLayout( Qt::Vertical );    m_layout->addItem( m_header );    m_layout->addItem( m_tabsView );    setLayout( m_layout );    // read configuration data and update the engine.    KConfigGroup config = Amarok::config("Tabs Applet");    m_fetchGuitar = config.readEntry( "FetchGuitar", true );    m_fetchBass = config.readEntry( "FetchBass", true );    Plasma::DataEngine *engine = dataEngine( "amarok-tabs" );    engine->setProperty( "fetchGuitarTabs", m_fetchGuitar );    engine->setProperty( "fetchBassTabs", m_fetchBass );    engine->connectSource( "tabs", this );    updateInterface( InitState );}

Player::Player(): QWidget(){    //preparation of the vlc command    const char * const vlc_args[] = {      "--sout=#transcode{vcodec=DIV3,vb=800,scale=1,acodec=mp3,ab=128,channels=2,samplerate=44100}:duplicate{dst=http{mux=asf,dst=:8983/},dst=display}",// to stream video with codec div3 & mp3 on port number 8983              "--sout-keep",      "sout-all"}; //output each stream//#ifdef Q_WS_X11   // _videoWidget=new QX11EmbedContainer(this);//#else    _videoWidget=new QFrame(this);//#endif    // [20101215 JG] If KDE is used like unique desktop environment, only use _videoWidget=new QFrame(this);    _volumeSlider=new QSlider(Qt::Horizontal,this);    _volumeSlider->setMaximum(100); //the volume is between 0 and 100    _volumeSlider->setToolTip("Audio slider");    // Note: if you use streaming, there is no ability to use the position slider    _positionSlider=new QSlider(Qt::Horizontal,this);    _positionSlider->setMaximum(POSITION_RESOLUTION);    QVBoxLayout *layout = new QVBoxLayout;    layout->addWidget(_videoWidget);    layout->addWidget(_positionSlider);    layout->addWidget(_volumeSlider);    setLayout(layout);    _isPlaying=false;    poller=new QTimer(this);    //Initialize an instance of vlc    //a structure for the exception is neede for this initalization    //libvlc_exception_init(&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.    //create a new libvlc instance    _vlcinstance=libvlc_new(sizeof(vlc_args) / sizeof(vlc_args[0]), vlc_args);  //tricky calculation of the char space used    //_vlcinstance=libvlc_new(sizeof(vlc_args) / sizeof(vlc_args[0]), vlc_args,&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.    //raise (&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.    // Create a media player playing environement    _mp = libvlc_media_player_new (_vlcinstance);    //_mp = libvlc_media_player_new (_vlcinstance, &_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.    //raise (&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.    //connect the two sliders to the corresponding slots (uses Qt's signal / slots technology)    connect(poller, SIGNAL(timeout()), this, SLOT(updateInterface()));    connect(_positionSlider, SIGNAL(sliderMoved(int)), this, SLOT(changePosition(int)));    connect(_volumeSlider, SIGNAL(sliderMoved(int)), this, SLOT(changeVolume(int)));    poller->start(100); //start timer to trigger every 100 ms the updateInterface slot}

void MainWindow::load(){	QString filename = QFileDialog::getOpenFileName(this, "Load Video",QString());	if(!filename.isNull())	{		siftObj = new SiftObj();		siftObj->setFilename(filename.toStdString());		_currentFrame = 1;		updateInterface();	}}

//-----------------------------------------------------------------------------// Function: BusInterfaceItem()//-----------------------------------------------------------------------------BusInterfaceItem::BusInterfaceItem(LibraryInterface* lh, QSharedPointer<Component> component,                                   QSharedPointer<BusInterface> busIf,                                   QGraphicsItem *parent)    : HWConnectionEndpoint(parent, busIf == 0, QVector2D(1.0f, 0.0f)),      lh_(lh),	  nameLabel_("", this),      busInterface_(),      component_(component),      oldColumn_(0),      oldPos_(),      oldInterfacePositions_(),      offPageConnector_(0),      portsCopied_(false){    setType(ENDPOINT_TYPE_BUS);    setTypeLocked(busIf != 0 && busIf->getInterfaceMode() != General::INTERFACE_MODE_COUNT);    busInterface_ = busIf;    int squareSize = GridSize;    QPolygonF shape;    shape << QPointF(-squareSize/2, squareSize / 2)          << QPointF(-squareSize/2, -squareSize)          << QPointF(squareSize/2, -squareSize)          << QPointF(squareSize/2, squareSize / 2)          << QPointF(0, squareSize);    setPolygon(shape);    	QFont font = nameLabel_.font();    font.setPointSize(8);    nameLabel_.setFont(font);    nameLabel_.setRotation(-rotation());    nameLabel_.setFlag(ItemStacksBehindParent);		QGraphicsDropShadowEffect *shadow = new QGraphicsDropShadowEffect;    shadow->setXOffset(0);    shadow->setYOffset(0);    shadow->setBlurRadius(5);	nameLabel_.setGraphicsEffect(shadow);    setFlag(ItemIsMovable);    setFlag(ItemIsSelectable);    setFlag(ItemSendsGeometryChanges);    setFlag(ItemSendsScenePositionChanges);    // Create the off-page connector.    offPageConnector_ = new OffPageConnectorItem(this);    offPageConnector_->setPos(0.0, -GridSize * 3);    offPageConnector_->setFlag(ItemStacksBehindParent);    offPageConnector_->setVisible(false);    updateInterface();}

void main(void){    	INIT_SHARC;        initInterface();        while(1) {        updateInterface();       }    }

void AddressBook::soumettreContact() {    QString nom (nomLineEdit->text());    QString adresse (adresseTextEdit->toPlainText());    if (nom.isEmpty() || adresse.isEmpty()) {        QMessageBox::information(this ,                                 tr("Champs obligatoires") ,                                 tr ("Veuillez remplir le nom et l'adresse."));        return;    }    if (currentMode == AddingMode) {        if (! listeContacts.contains(nom)) {            listeContacts.insert(nom , adresse);            QMessageBox::information(this ,                                     tr("Contact ajouté") ,                                     tr ("Le contact /"%1/" a bien été ajouté").arg(nom));        } else {            QMessageBox::information (this ,                                      tr ("Contact existant") ,                                      tr ("Un contact portant ce nom existe déjà"));            return;        }    } else if (currentMode == EditingMode) {        if (oldNom != nom) {            if (!listeContacts.contains(nom)) {                QMessageBox::information(this ,                                         tr("Contact modifié") ,                                         tr("Modification du contact /"%1/"").arg(oldNom));                listeContacts.remove(oldNom);                listeContacts.insert(nom , adresse);            } else {                QMessageBox::information (this ,                                          tr ("Erreur modification") ,                                          tr ("/"%1/" figure déjà dans vos contacts.").arg(nom));            }        } else if (oldAdresse != adresse){            QMessageBox::information(this ,                                     tr("Contact modifié") ,                                     tr("Modification du contact /"%1/"").arg(nom));            listeContacts[nom] = adresse;        }    }    updateInterface(NavigationMode);}