自学教程：C++ updateButton函数代码示例

void MyMaterialEditor::setMaterial(const Material &m){    m_material = m;    updateButton(0, m.ambient);    updateButton(1, m.diffuse);    updateButton(2, m.specular);    updateButton(3, m.emission);    m_shininessSpinner->setValue(m.shininess);}

void stompbox_cs::updateSignal(){	updateKnob1("00", "00", "42");	updateKnob2("00", "00", "47");	updateComboBox("00", "00", "41");	updateButton("00", "00", "40");};

void TCPTransfer::setCurrentStackWidgetSlot(){    QObject* sender = this->sender();    QToolButton* tbtn = static_cast<QToolButton*>(sender);    if(!tbtn) return;    ui->friendsTBtn->setChecked(false);    ui->uploadTBtn->setChecked(false);    ui->historyTBtn->setChecked(false);    int index = 0;    if( tbtn == ui->friendsTBtn )    {        tbtn->setChecked(true);        index = 0;    }    else if( tbtn == ui->uploadTBtn )    {        tbtn->setChecked(true);        index = 1;    }    else if( tbtn == ui->historyTBtn )    {        tbtn->setChecked(true);        index = 2;    }    updateButton(index);    emit currentStackWidgetSingal(index);}

void ConfFilters::slotRemove(){	TQListViewItem	*item = m_filters->currentItem();	if (item)		delete item;	updateButton();}

ReloadStopButton::ReloadStopButton(QWidget* parent)    : QWidget(parent)    , m_loadInProgress(false){    QHBoxLayout* lay = new QHBoxLayout(this);    setLayout(lay);    m_buttonStop = new ToolButton(this);    m_buttonStop->setObjectName("navigation-button-stop");    m_buttonStop->setToolTip(ToolButton::tr("Stop"));    m_buttonStop->setToolButtonStyle(Qt::ToolButtonIconOnly);    m_buttonStop->setVisible(false);    m_buttonStop->setAutoRaise(true);    m_buttonStop->setFocusPolicy(Qt::NoFocus);    m_buttonReload = new ToolButton(this);    m_buttonReload->setObjectName("navigation-button-reload");    m_buttonReload->setToolTip(ToolButton::tr("Reload"));    m_buttonReload->setToolButtonStyle(Qt::ToolButtonIconOnly);    m_buttonReload->setAutoRaise(true);    m_buttonReload->setFocusPolicy(Qt::NoFocus);    lay->addWidget(m_buttonStop);    lay->addWidget(m_buttonReload);    lay->setContentsMargins(0, 0, 0, 0);    lay->setSpacing(0);    m_updateTimer = new QTimer(this);    m_updateTimer->setInterval(100);    m_updateTimer->setSingleShot(true);    connect(m_updateTimer, SIGNAL(timeout()), this, SLOT(updateButton()));}

MirrorSettings::MirrorSettings(QWidget *parent, TransferHandler *handler, const KUrl &file)  : KGetSaveSizeDialog("MirrorSettings", parent),    m_transfer(handler),    m_file(file){    m_model = new MirrorModel(this);    m_model->setMirrors(m_transfer->availableMirrors(m_file));    m_proxy = new MirrorProxyModel(this);    m_proxy->setSourceModel(m_model);    QWidget *widget = new QWidget(this);    ui.setupUi(widget);    ui.add->setGuiItem(KStandardGuiItem::add());    ui.remove->setGuiItem(KStandardGuiItem::remove());    ui.treeView->setModel(m_proxy);    ui.treeView->header()->setResizeMode(QHeaderView::ResizeToContents);    ui.treeView->hideColumn(MirrorItem::Priority);    ui.treeView->hideColumn(MirrorItem::Country);    ui.treeView->setItemDelegate(new MirrorDelegate(this));    updateButton();    connect(ui.treeView->selectionModel(), SIGNAL(selectionChanged(QItemSelection,QItemSelection)), this, SLOT(updateButton()));    connect(ui.add, SIGNAL(clicked()), this, SLOT(addClicked()));    connect(ui.remove, SIGNAL(clicked()), this, SLOT(removeMirror()));    connect(this, SIGNAL(finished()), this, SLOT(save()));    setMainWidget(widget);    setCaption(i18n("Modify the used mirrors"));    setButtons(KDialog::Close);}

bool WeatherPlugin::done(unsigned code, Buffer &data, const char*){    if (code != 200)        return false;    m_data  = "";    m_day   = 0;    m_bBar  = false;    m_bWind = false;    m_bUv	= false;    m_bCC	= false;    m_bMoon	= false;    reset();    if (!parse(data.data(), data.size(), false)){        log(L_WARN, "XML parse error");        return false;    }    time_t now = time(NULL);    setTime(now);    if (m_bForecast)        setForecastTime(now);    updateButton();    Event eUpdate(EventWeather);    eUpdate.process();    return false;}

void UserHelpDialog::slotDown(){	int entries = m_menulistbox->count();	// get current index	int index = m_menulistbox->currentRow();	if (index < 0 || index == entries - 1) {		return;	}	// insert current entry after current	if (index < entries - 2) {		m_menulistbox->insertItem(index + 2, m_menulistbox->currentItem()->text());    // index + 2		m_filelist.insert(index + 2, m_filelist[index]);	}	else {		m_menulistbox->addItem(m_menulistbox->currentItem()->text());		m_filelist.append(m_filelist[index]);	}	// then remove the old entry	m_menulistbox->takeItem(index);	m_filelist.removeAt(index);	// select current entry	m_menulistbox->setCurrentRow(index + 1);	updateButton();}

void GUI_v1::updateMenuButton(Button *button) {	if (!_displayMenu)		return;	updateButton(button);	_screen->updateScreen();}

ConfFilters::ConfFilters(TQWidget *parent, const char *name): TQWidget(parent, name){	m_filters = new TDEListView(this);	m_filters->addColumn(i18n("Mime Type"));	m_filters->addColumn(i18n("Command"));	m_filters->setFrameStyle(TQFrame::WinPanel|TQFrame::Sunken);	m_filters->setLineWidth(1);	m_filters->setSorting(-1);	m_filters->header()->setStretchEnabled(true, 1);	connect(m_filters, TQT_SIGNAL(doubleClicked(TQListViewItem*)), TQT_SLOT(slotChange()));	m_add = new TQPushButton(this);	m_add->setPixmap(BarIcon("document-new"));	m_remove = new TQPushButton(this);	m_remove->setIconSet(BarIconSet("remove"));	m_change = new TQPushButton(this);	m_change->setIconSet(BarIconSet("filter"));	m_up = new TQPushButton(this);	m_up->setIconSet(BarIconSet("go-up"));	m_down = new TQPushButton(this);	m_down->setIconSet(BarIconSet("go-down"));	connect(m_add, TQT_SIGNAL(clicked()), TQT_SLOT(slotAdd()));	connect(m_change, TQT_SIGNAL(clicked()), TQT_SLOT(slotChange()));	connect(m_remove, TQT_SIGNAL(clicked()), TQT_SLOT(slotRemove()));	connect(m_up, TQT_SIGNAL(clicked()), TQT_SLOT(slotUp()));	connect(m_down, TQT_SIGNAL(clicked()), TQT_SLOT(slotDown()));	TQToolTip::add(m_add, i18n("Add filter"));	TQToolTip::add(m_change, i18n("Modify filter"));	TQToolTip::add(m_remove, i18n("Remove filter"));	TQToolTip::add(m_up, i18n("Move filter up"));	TQToolTip::add(m_down, i18n("Move filter down"));	TQHBoxLayout	*l0 = new TQHBoxLayout(this, 10, 10);	TQVBoxLayout	*l1 = new TQVBoxLayout(0, 0, 0);	l0->addWidget(m_filters, 1);	l0->addLayout(l1, 0);	l1->addWidget(m_add);	l1->addWidget(m_change);	l1->addWidget(m_remove);	l1->addSpacing(10);	l1->addWidget(m_up);	l1->addWidget(m_down);	l1->addStretch(1);	updateButton();	connect(m_filters, TQT_SIGNAL(selectionChanged ()),TQT_SLOT(updateButton()));}

static voidshotChangeNotify (const char        *optionName,                  BananaType        optionType,                  const BananaValue *optionValue,                  int               screenNum){	if (strcasecmp (optionName, "initiate_button") == 0)		updateButton (optionValue->s, &initiate_button);}

void KexiComboBoxBase::slotRowAccepted(KexiDB::RecordData* record, int row){    Q_UNUSED(row);    //update our value    //..nothing to do?    updateButton();    slotItemSelected(record);    /*emit*/acceptRequested();}

void YaEventNotifierInformer::notifierVisibilityChanged(){	bool enabled = notifier_->shouldBeVisible();	button()->setEnabled(enabled);	if (enabled)		emit activated();	else		emit deactivated();	updateButton();}

KeyPointShowSetting::KeyPointShowSetting(std::vector<cv::KeyPoint>, QWidget *parent):	KeyPointSettings{parent}{	auto layout=util::make_unique<QVBoxLayout>();	auto button=util::make_unique<QPushButton>();	button_=button.get();	button_->setEnabled(true);	button_->setCheckable(true);	connect(button.get(),SIGNAL(clicked()),this,SLOT(updateAll()));	connect(button.get(),SIGNAL(clicked()),this,SLOT(updateButton()));	button->setChecked(true);	layout->addWidget(button.release());	setLayout(layout.release());	updateButton();}

void MirrorAddDlg::init(){    setCaption(i18n("Add mirror"));    QWidget *widget = new QWidget(this);    ui.setupUi(widget);    setMainWidget(widget);    if (m_countryModel)    {        ui.location->setModel(m_countryModel);        ui.location->setCurrentIndex(-1);    }    setButtons(KDialog::Yes | KDialog::Cancel);    setButtonGuiItem(KDialog::Yes, KStandardGuiItem::add());    updateButton();    connect(ui.url, SIGNAL(textChanged(QString)), this, SLOT(updateButton(QString)));    connect(this, SIGNAL(yesClicked()), this, SLOT(addMirror()));}

void ConfFilters::slotAdd(){	TQString	mime, cmd;	if (FilterDlg::doIt(this, &mime, &cmd))		if (!mime.isEmpty() && !cmd.isEmpty())		  {		    new TQListViewItem(m_filters, m_filters->currentItem(), mime, cmd);		    updateButton();		  }		else			KMessageBox::error(this, i18n("Empty parameters."));}

bool GHOST_NDOFManagerUnix::processEvents(){	bool anyProcessed = false;	if (m_available) {		spnav_event e;#ifdef USE_FINISH_GLITCH_WORKAROUND		bool motion_test = false;#endif		while (spnav_poll_event(&e)) {			switch (e.type) {				case SPNAV_EVENT_MOTION:				{					/* convert to blender view coords */					GHOST_TUns64 now = m_system.getMilliSeconds();					const short t[3] = {(short)e.motion.x, (short)e.motion.y, (short)-e.motion.z};					const short r[3] = {(short)-e.motion.rx, (short)-e.motion.ry, (short)e.motion.rz};					updateTranslation(t, now);					updateRotation(r, now);#ifdef USE_FINISH_GLITCH_WORKAROUND					motion_test = true;#endif					break;				}				case SPNAV_EVENT_BUTTON:					GHOST_TUns64 now = m_system.getMilliSeconds();					updateButton(e.button.bnum, e.button.press, now);					break;			}			anyProcessed = true;		}#ifdef USE_FINISH_GLITCH_WORKAROUND		if (motion_test_prev == true && motion_test == false) {			GHOST_TUns64 now = m_system.getMilliSeconds();			const short v[3] = {0, 0, 0};			updateTranslation(v, now);			updateRotation(v, now);			anyProcessed = true;		}		motion_test_prev = motion_test;#endif	}	return anyProcessed;}

void UserHelpDialog::slotAddSep(){	// get current index	int index = m_menulistbox->currentRow();	if (index == -1) {		return;	}	// insert separator	m_menulistbox->insertItem(index, "-");	m_filelist.insert(index, QUrl());	updateButton();}