自学教程：C++ widget函数代码示例

GitSubmitEditorWidget *GitSubmitEditor::submitEditorWidget(){    return static_cast<GitSubmitEditorWidget *>(widget());}

QAbstractButton *ButtonTaskMenu::button() const{     return qobject_cast<QAbstractButton *>(widget());}

 /** Returns corresponding Tools-view. */ UIToolsView *view() const { return qobject_cast<UIToolsView*>(widget()); }

void ImageBrowserScrollArea::resizeEvent(QResizeEvent *event) {    QWidget *child = widget();    if (child != 0) {        ((ImageBrowserView*) child)->resizeUpdate();    }}

bool QWidgetWindow::event(QEvent *event){    if (m_widget->testAttribute(Qt::WA_DontShowOnScreen)) {        // /a event is uninteresting for QWidgetWindow, the event was probably        // generated before WA_DontShowOnScreen was set        return m_widget->event(event);    }    switch (event->type()) {    case QEvent::Close:        handleCloseEvent(static_cast<QCloseEvent *>(event));        return true;    case QEvent::Enter:    case QEvent::Leave:        handleEnterLeaveEvent(event);        return true;    // these should not be sent to QWidget, the corresponding events    // are sent by QApplicationPrivate::notifyActiveWindowChange()    case QEvent::FocusIn:        handleFocusInEvent(static_cast<QFocusEvent *>(event));        // Fallthrough    case QEvent::FocusOut: {#ifndef QT_NO_ACCESSIBILITY        QAccessible::State state;        state.active = true;        QAccessibleStateChangeEvent ev(widget(), state);        QAccessible::updateAccessibility(&ev);#endif        return false; }    case QEvent::FocusAboutToChange:        if (QApplicationPrivate::focus_widget) {            if (QApplicationPrivate::focus_widget->testAttribute(Qt::WA_InputMethodEnabled))                QGuiApplication::inputMethod()->commit();            QGuiApplication::sendSpontaneousEvent(QApplicationPrivate::focus_widget, event);        }        return true;    case QEvent::KeyPress:    case QEvent::KeyRelease:    case QEvent::ShortcutOverride:        handleKeyEvent(static_cast<QKeyEvent *>(event));        return true;    case QEvent::MouseMove:    case QEvent::MouseButtonPress:    case QEvent::MouseButtonRelease:    case QEvent::MouseButtonDblClick:        handleMouseEvent(static_cast<QMouseEvent *>(event));        return true;    case QEvent::NonClientAreaMouseMove:    case QEvent::NonClientAreaMouseButtonPress:    case QEvent::NonClientAreaMouseButtonRelease:    case QEvent::NonClientAreaMouseButtonDblClick:        handleNonClientAreaMouseEvent(static_cast<QMouseEvent *>(event));        return true;    case QEvent::TouchBegin:    case QEvent::TouchUpdate:    case QEvent::TouchEnd:    case QEvent::TouchCancel:        handleTouchEvent(static_cast<QTouchEvent *>(event));        return true;    case QEvent::Move:        handleMoveEvent(static_cast<QMoveEvent *>(event));        return true;    case QEvent::Resize:        handleResizeEvent(static_cast<QResizeEvent *>(event));        return true;#ifndef QT_NO_WHEELEVENT    case QEvent::Wheel:        handleWheelEvent(static_cast<QWheelEvent *>(event));        return true;#endif#ifndef QT_NO_DRAGANDDROP    case QEvent::DragEnter:    case QEvent::DragMove:        handleDragEnterMoveEvent(static_cast<QDragMoveEvent *>(event));        return true;    case QEvent::DragLeave:        handleDragLeaveEvent(static_cast<QDragLeaveEvent *>(event));        return true;    case QEvent::Drop:        handleDropEvent(static_cast<QDropEvent *>(event));        return true;#endif    case QEvent::Expose:        handleExposeEvent(static_cast<QExposeEvent *>(event));        return true;    case QEvent::WindowStateChange://.........这里部分代码省略.........

QueryWidget *WorkAreaTabWidget::queryWidget(int index){    return qobject_cast<QueryWidget *>(widget(index));}

QDeclarativeView* QDeclarativeViewNodeInstance::view() const{    QDeclarativeView* view = qobject_cast<QDeclarativeView*>(widget());    Q_ASSERT(view);    return view;}

	return true;}KVSO_CLASS_FUNCTION(groupBox,title){	CHECK_INTERNAL_POINTER(widget())	c->returnValue()->setString(((KviTalGroupBox *)widget())->title());	return true;}KVSO_CLASS_FUNCTION(groupBox,setFlat){	CHECK_INTERNAL_POINTER(widget())	bool bEnabled;	KVSO_PARAMETERS_BEGIN(c)		KVSO_PARAMETER("bFlag",KVS_PT_BOOL,0,bEnabled)	KVSO_PARAMETERS_END(c)	((KviTalGroupBox *)widget())->setFlat(bEnabled);	return true;}KVSO_CLASS_FUNCTION(groupBox,isFlat){	CHECK_INTERNAL_POINTER(widget())	c->returnValue()->setBoolean(((KviTalGroupBox *)widget())->isFlat());	return true;}KVSO_CLASS_FUNCTION(groupBox,setCheckable){	CHECK_INTERNAL_POINTER(widget())	bool bEnabled;	KVSO_PARAMETERS_BEGIN(c)		KVSO_PARAMETER("bFlag",KVS_PT_BOOL,0,bEnabled)	KVSO_PARAMETERS_END(c)

/*!  /fn QAccessibleTextEdit::QAccessibleTextEdit(QWidget *widget)  Constructs a QAccessibleTextEdit object for a /a widget.*/QAccessibleTextEdit::QAccessibleTextEdit(QWidget *o): QAccessibleTextWidget(o, QAccessible::EditableText){    Q_ASSERT(widget()->inherits("QTextEdit"));}

/*! Returns the text edit. */QTextEdit *QAccessibleTextEdit::textEdit() const{    return static_cast<QTextEdit *>(widget());}

QPlainTextEdit* QAccessiblePlainTextEdit::plainTextEdit() const{    return static_cast<QPlainTextEdit *>(widget());}

QAccessiblePlainTextEdit::QAccessiblePlainTextEdit(QWidget* o)  :QAccessibleTextWidget(o){    Q_ASSERT(widget()->inherits("QPlainTextEdit"));}

// Swap two tab indicesvoid MHTabWidget::MoveTab(int fromIndex, int toIndex){    removeTab(fromIndex);    insertTab(toIndex, widget(fromIndex), tabIcon(fromIndex), tabText(fromIndex));    setCurrentIndex(toIndex);}

//.........这里部分代码省略.........    if (tool) {        wsa.save_under = True;        wsa_mask |= CWSaveUnder;    }    if (flags & Qt::X11BypassWindowManagerHint) {        wsa.override_redirect = True;        wsa_mask |= CWOverrideRedirect;    }#if 0    if (wsa_mask && initializeWindow) {        Q_ASSERT(id);        XChangeWindowAttributes(dpy, id, wsa_mask, &wsa);    }#endif    if (mwmhints.functions != 0) {        mwmhints.flags |= MWM_HINTS_FUNCTIONS;        mwmhints.functions |= MWM_FUNC_MOVE | MWM_FUNC_RESIZE;    } else {        mwmhints.functions = MWM_FUNC_ALL;    }    if (!(flags & Qt::FramelessWindowHint)            && flags & Qt::CustomizeWindowHint            && flags & Qt::WindowTitleHint            && !(flags &                 (Qt::WindowMinimizeButtonHint                  | Qt::WindowMaximizeButtonHint                  | Qt::WindowCloseButtonHint))) {        // a special case - only the titlebar without any button        mwmhints.flags = MWM_HINTS_FUNCTIONS;        mwmhints.functions = MWM_FUNC_MOVE | MWM_FUNC_RESIZE;        mwmhints.decorations = 0;    }    if (widget()->windowModality() == Qt::WindowModal) {        mwmhints.input_mode = MWM_INPUT_PRIMARY_APPLICATION_MODAL;    } else if (widget()->windowModality() == Qt::ApplicationModal) {        mwmhints.input_mode = MWM_INPUT_FULL_APPLICATION_MODAL;    }    setMWMHints(mwmhints);    QVector<Atom> netWmState = getNetWmState();    if (flags & Qt::WindowStaysOnTopHint) {        if (flags & Qt::WindowStaysOnBottomHint)            qWarning() << "QWidget: Incompatible window flags: the window can't be on top and on bottom at the same time";        if (!netWmState.contains(QXlibStatic::atom(QXlibStatic::_NET_WM_STATE_ABOVE)))            netWmState.append(QXlibStatic::atom(QXlibStatic::_NET_WM_STATE_ABOVE));        if (!netWmState.contains(QXlibStatic::atom(QXlibStatic::_NET_WM_STATE_STAYS_ON_TOP)))            netWmState.append(QXlibStatic::atom(QXlibStatic::_NET_WM_STATE_STAYS_ON_TOP));    } else if (flags & Qt::WindowStaysOnBottomHint) {        if (!netWmState.contains(QXlibStatic::atom(QXlibStatic::_NET_WM_STATE_BELOW)))            netWmState.append(QXlibStatic::atom(QXlibStatic::_NET_WM_STATE_BELOW));    }    if (widget()->isFullScreen()) {        if (!netWmState.contains(QXlibStatic::atom(QXlibStatic::_NET_WM_STATE_FULLSCREEN)))            netWmState.append(QXlibStatic::atom(QXlibStatic::_NET_WM_STATE_FULLSCREEN));    }    if (widget()->isMaximized()) {        if (!netWmState.contains(QXlibStatic::atom(QXlibStatic::_NET_WM_STATE_MAXIMIZED_HORZ)))            netWmState.append(QXlibStatic::atom(QXlibStatic::_NET_WM_STATE_MAXIMIZED_HORZ));        if (!netWmState.contains(QXlibStatic::atom(QXlibStatic::_NET_WM_STATE_MAXIMIZED_VERT)))            netWmState.append(QXlibStatic::atom(QXlibStatic::_NET_WM_STATE_MAXIMIZED_VERT));    }    if (widget()->windowModality() != Qt::NonModal) {        if (!netWmState.contains(QXlibStatic::atom(QXlibStatic::_NET_WM_STATE_MODAL)))            netWmState.append(QXlibStatic::atom(QXlibStatic::_NET_WM_STATE_MODAL));    }    if (!netWmState.isEmpty()) {        XChangeProperty(mScreen->display()->nativeDisplay(), x_window,                        QXlibStatic::atom(QXlibStatic::_NET_WM_STATE), XA_ATOM, 32, PropModeReplace,                        (unsigned char *) netWmState.data(), netWmState.size());    } else {        XDeleteProperty(mScreen->display()->nativeDisplay(), x_window, QXlibStatic::atom(QXlibStatic::_NET_WM_STATE));    }//##### only if initializeWindow???    if (popup || tooltip) {                        // popup widget#ifdef MYX11_DEBUG        qDebug() << "Doing XChangeWindowAttributes for popup" << wsa.override_redirect;#endif        // set EWMH window types        // setNetWmWindowTypes();        wsa.override_redirect = True;        wsa.save_under = True;        XChangeWindowAttributes(mScreen->display()->nativeDisplay(), x_window, CWOverrideRedirect | CWSaveUnder,                                &wsa);    } else {#ifdef MYX11_DEBUG        qDebug() << "Doing XChangeWindowAttributes for non-popup";#endif    }    return flags;}

int ScrollArea::scrollWidth() const {	QWidget *w(widget());	return w ? qMax(w->width(), width()) : width();}

void DatabaseTabWidget::lockDatabases(){    for (int i = 0; i < count(); i++) {        DatabaseWidget* dbWidget = static_cast<DatabaseWidget*>(widget(i));        Database* db = databaseFromDatabaseWidget(dbWidget);        DatabaseWidget::Mode mode = dbWidget->currentMode();        if ((mode != DatabaseWidget::ViewMode && mode != DatabaseWidget::EditMode)                || !dbWidget->dbHasKey()) {            continue;        }        // show the correct tab widget before we are asking questions about it        setCurrentWidget(dbWidget);        if (mode == DatabaseWidget::EditMode) {            QMessageBox::StandardButton result =                MessageBox::question(                    this, tr("Lock database"),                    tr("Can't lock the database as you are currently editing it./nPlease press cancel to finish your changes or discard them."),                    QMessageBox::Discard | QMessageBox::Cancel, QMessageBox::Cancel);            if (result == QMessageBox::Cancel) {                continue;            }        }        if (m_dbList[db].modified && !m_dbList[db].saveToFilename) {            QMessageBox::StandardButton result =                MessageBox::question(                    this, tr("Lock database"),                    tr("This database has never been saved./nYou can save the dabatase or stop locking it."),                    QMessageBox::Save | QMessageBox::Cancel, QMessageBox::Cancel);            if (result == QMessageBox::Save) {                if (!saveDatabase(db)) {                    continue;                }            }            else if (result == QMessageBox::Cancel) {                continue;            }        }        else if (m_dbList[db].modified) {            QMessageBox::StandardButton result =                MessageBox::question(                    this, tr("Lock database"),                    tr("This database has been modified./nDo you want to save the database before locking it?/nOtherwise your changes are lost."),                    QMessageBox::Save | QMessageBox::Discard | QMessageBox::Cancel, QMessageBox::Cancel);            if (result == QMessageBox::Save) {                if (!saveDatabase(db)) {                    continue;                }            }            else if (result == QMessageBox::Discard) {                m_dbList[db].modified = false;            }            else if (result == QMessageBox::Cancel) {                continue;            }        }        dbWidget->lock();        // database has changed so we can't use the db variable anymore        updateTabName(dbWidget->database());    }}

int ScrollArea::scrollHeight() const {	QWidget *w(widget());	return w ? qMax(w->height(), height()) : height();}

void ScrollArea::touchEvent(QTouchEvent *e) {	if (!e->touchPoints().isEmpty()) {		_touchPrevPos = _touchPos;		_touchPos = e->touchPoints().cbegin()->screenPos().toPoint();	}	switch (e->type()) {	case QEvent::TouchBegin:		if (_touchPress || e->touchPoints().isEmpty()) return;		_touchPress = true;		if (_touchScrollState == TouchScrollAuto) {			_touchScrollState = TouchScrollAcceleration;			_touchWaitingAcceleration = true;			_touchAccelerationTime = getms();			touchUpdateSpeed();			_touchStart = _touchPos;		} else {			_touchScroll = false;			_touchTimer.start(QApplication::startDragTime());		}		_touchStart = _touchPrevPos = _touchPos;		_touchRightButton = false;		break;	case QEvent::TouchUpdate:		if (!_touchPress) return;		if (!_touchScroll && (_touchPos - _touchStart).manhattanLength() >= QApplication::startDragDistance()) {			_touchTimer.stop();			_touchScroll = true;			touchUpdateSpeed();		}		if (_touchScroll) {			if (_touchScrollState == TouchScrollManual) {				touchScrollUpdated(_touchPos);			} else if (_touchScrollState == TouchScrollAcceleration) {				touchUpdateSpeed();				_touchAccelerationTime = getms();				if (_touchSpeed.isNull()) {					_touchScrollState = TouchScrollManual;				}			}		}		break;	case QEvent::TouchEnd:		if (!_touchPress) return;		_touchPress = false;		if (_touchScroll) {			if (_touchScrollState == TouchScrollManual) {				_touchScrollState = TouchScrollAuto;				_touchPrevPosValid = false;				_touchScrollTimer.start(15);				_touchTime = getms();			} else if (_touchScrollState == TouchScrollAuto) {				_touchScrollState = TouchScrollManual;				_touchScroll = false;				touchResetSpeed();			} else if (_touchScrollState == TouchScrollAcceleration) {				_touchScrollState = TouchScrollAuto;				_touchWaitingAcceleration = false;				_touchPrevPosValid = false;			}		} else if (window() && widget()) { // one short tap -- like left mouse click, one long tap -- like right mouse click#ifdef Q_OS_WIN			Qt::MouseButton btn(_touchRightButton ? Qt::RightButton : Qt::LeftButton);			QPoint mapped(widget()->mapFromGlobal(_touchStart)), winMapped(window()->mapFromGlobal(_touchStart));			QMouseEvent pressEvent(QEvent::MouseButtonPress, mapped, winMapped, _touchStart, btn, Qt::MouseButtons(btn), Qt::KeyboardModifiers());			pressEvent.accept();			qt_sendSpontaneousEvent(widget(), &pressEvent);			QMouseEvent releaseEvent(QEvent::MouseButtonRelease, mapped, winMapped, _touchStart, btn, Qt::MouseButtons(btn), Qt::KeyboardModifiers());			qt_sendSpontaneousEvent(widget(), &releaseEvent);			if (_touchRightButton) {				QContextMenuEvent contextEvent(QContextMenuEvent::Mouse, mapped, _touchStart);				qt_sendSpontaneousEvent(widget(), &contextEvent);			}#endif		}		_touchTimer.stop();		_touchRightButton = false;		break;	case QEvent::TouchCancel:		_touchPress = false;		_touchScroll = false;		_touchScrollState = TouchScrollManual;		_touchTimer.stop();		break;	}}

MainConfigurationWindow::MainConfigurationWindow() :    ConfigurationWindow("MainConfiguration", tr("Kadu configuration"), "General", instanceDataManager()), lookChatAdvanced(0){    setWindowRole("kadu-configuration");    widget()->appendUiFile(dataPath("kadu/configuration/dialog.ui"));#ifndef DEBUG_ENABLED    ((QWidget *)(widget()->widgetById("debug")->parent()))->hide();#endif#ifndef Q_OS_WIN    ((QWidget *)(widget()->widgetById("startup")))->hide();#endif#ifndef Q_WS_X11    ((QWidget *)(widget()->widgetById("windowActivationMethodGroup")))->hide();    ((QWidget *)(widget()->widgetById("notify/fullscreenSilentMode")))->hide();#endif    onStartupSetLastDescription = static_cast<QCheckBox *>(widget()->widgetById("onStartupSetLastDescription"));    QLineEdit *disconnectDescription = static_cast<QLineEdit *>(widget()->widgetById("disconnectDescription"));    QLineEdit *onStartupSetDescription = static_cast<QLineEdit *>(widget()->widgetById("onStartupSetDescription"));    Account account = AccountManager::instance()->defaultAccount();    if (!account.isNull() && account.protocolHandler())    {        disconnectDescription->setMaxLength(account.data()->maxDescriptionLength());        onStartupSetDescription->setMaxLength(account.data()->maxDescriptionLength());    }//	connect(widget()->widgetById("advancedMode"), SIGNAL(toggled(bool)), widget()->widgetById("contactsWithIcons"), SLOT(setEnabled(bool)));    connect(widget()->widgetById("showAvatars"), SIGNAL(toggled(bool)), widget()->widgetById("avatarBorder"), SLOT(setEnabled(bool)));    connect(widget()->widgetById("showAvatars"), SIGNAL(toggled(bool)), widget()->widgetById("avatarGreyOut"), SLOT(setEnabled(bool)));    connect(widget()->widgetById("disconnectWithCurrentDescription"), SIGNAL(toggled(bool)), disconnectDescription, SLOT(setDisabled(bool)));    connect(onStartupSetLastDescription, SIGNAL(toggled(bool)), onStartupSetDescription, SLOT(setDisabled(bool)));    connect(widget()->widgetById("foldLink"), SIGNAL(toggled(bool)), widget()->widgetById("linkFoldTreshold"), SLOT(setEnabled(bool)));    connect(widget()->widgetById("chatPrune"), SIGNAL(toggled(bool)), widget()->widgetById("chatPruneLen"), SLOT(setEnabled(bool)));    connect(widget()->widgetById("chatCloseTimer"), SIGNAL(toggled(bool)), widget()->widgetById("chatCloseTimerPeriod"), SLOT(setEnabled(bool)));    connect(widget()->widgetById("startupStatus"), SIGNAL(activated(int)), this, SLOT(onChangeStartupStatus(int)));    connect(widget()->widgetById("infoPanelBgFilled"), SIGNAL(toggled(bool)), widget()->widgetById("infoPanelBgColor"), SLOT(setEnabled(bool)));    connect(widget()->widgetById("showDescription"), SIGNAL(toggled(bool)), widget()->widgetById("multilineDescription"), SLOT(setEnabled(bool)));//	connect(widget()->widgetById("useDefaultServers"), SIGNAL(toggled(bool)), widget()->widgetById("serverList"), SLOT(setDisabled(bool)));    connect(widget()->widgetById("openChatOnMessage"), SIGNAL(toggled(bool)), widget()->widgetById("openChatOnMessageWhenOnline"), SLOT(setEnabled(bool)));    connect(widget()->widgetById("displayGroupTabs"), SIGNAL(toggled(bool)), widget()->widgetById("showGroupAll"), SLOT(setEnabled(bool)));    emoticonsStyleComboBox = static_cast<ConfigComboBox *>(widget()->widgetById("emoticonsStyle"));    emoticonsThemeComboBox = static_cast<ConfigComboBox *>(widget()->widgetById("emoticonsTheme"));    emoticonsScalingComboBox = static_cast<ConfigComboBox *>(widget()->widgetById("emoticonsScaling"));    connect(emoticonsThemeComboBox, SIGNAL(currentIndexChanged(int)), this, SLOT(onChangeEmoticonsTheme(int)));    connect(widget()->widgetById("emoticonsPaths"), SIGNAL(changed()), this, SLOT(setEmoticonThemes()));    QWidget *showInformationPanel = widget()->widgetById("showInformationPanel");    connect(showInformationPanel, SIGNAL(toggled(bool)), widget()->widgetById("showVerticalScrollbar"), SLOT(setEnabled(bool)));    connect(showInformationPanel, SIGNAL(toggled(bool)), widget()->widgetById("showEmoticonsInPanel"), SLOT(setEnabled(bool)));    ConfigCheckBox *useDefaultBrowserCheckbox = static_cast<ConfigCheckBox *>(widget()->widgetById("useDefaultBrowser"));    ConfigLineEdit *browserCommandLineEdit = static_cast<ConfigLineEdit *>(widget()->widgetById("browserPath"));    connect(useDefaultBrowserCheckbox, SIGNAL(toggled(bool)), browserCommandLineEdit, SLOT(setDisabled(bool)));    ConfigCheckBox *useDefaultEMailCheckbox = static_cast<ConfigCheckBox *>(widget()->widgetById("useDefaultEMail"));    ConfigLineEdit *mailCommandLineEdit = static_cast<ConfigLineEdit *>(widget()->widgetById("mailPath"));    connect(useDefaultEMailCheckbox, SIGNAL(toggled(bool)), mailCommandLineEdit, SLOT(setDisabled(bool)));    connect(widget()->widgetById("lookChatAdvanced"), SIGNAL(clicked()), this, SLOT(showLookChatAdvanced()));    Preview *infoPanelSyntaxPreview = static_cast<Preview *>(widget()->widgetById("infoPanelSyntaxPreview"));    infoPanelSyntaxPreview->setResetBackgroundColor(config_file.readEntry("Look", "InfoPanelBgColor"));    connect(infoPanelSyntaxPreview, SIGNAL(needFixup(QString &)), Core::instance()->kaduWindow()->infoPanel(), SLOT(styleFixup(QString &)));    connect(widget()->widgetById("infoPanelSyntax"), SIGNAL(syntaxChanged(const QString &)), infoPanelSyntaxPreview, SLOT(syntaxChanged(const QString &)));    connect(widget()->widgetById("infoPanelSyntax"), SIGNAL(onSyntaxEditorWindowCreated(SyntaxEditorWindow *)),            this, SLOT(onInfoPanelSyntaxEditorWindowCreated(SyntaxEditorWindow *)));    connect(widget()->widgetById("iconPaths"), SIGNAL(changed()), this, SLOT(setIconThemes()));    connect(widget()->widgetById("ignoreMessagesFromAnonymous"), SIGNAL(toggled(bool)), widget()->widgetById("ignoreMessagesFromAnonymousInConferences"), SLOT(setEnabled(bool)));    QWidget *useUserboxBackground = widget()->widgetById("useUserboxBackground");    connect(useUserboxBackground, SIGNAL(toggled(bool)), widget()->widgetById("userboxBackground"), SLOT(setEnabled(bool)));    connect(useUserboxBackground, SIGNAL(toggled(bool)), widget()->widgetById("userboxBackgroundDisplayStyle"), SLOT(setEnabled(bool)));    widget()->widgetById("parseStatus")->setToolTip(qApp->translate("@default", SyntaxText));    (static_cast<ConfigSyntaxEditor *>(widget()->widgetById("infoPanelSyntax")))->setSyntaxHint(qApp->translate("@default", SyntaxText));    userboxTransparency = static_cast<QCheckBox *>(widget()->widgetById("userboxTransparency"));    userboxAlpha = static_cast<QSlider *>(widget()->widgetById("userboxAlpha"));    connect(userboxTransparency, SIGNAL(toggled(bool)), widget()->widgetById("userboxAlpha"), SLOT(setEnabled(bool)));    buddyColors = new BuddyListBackgroundColorsWidget(this);    triggerCompositingStateChanged();}

void PLineEdit::messageHandler(int fd, PukeMessage *pm){  PukeMessage pmRet;  switch(pm->iCommand){  case PUKE_LINED_SET_MAXLENGTH:    if(widget() == 0){      debug("PLineEdit: No Widget set");      return;    }    widget()->setMaxLength(pm->iArg);    pmRet.iCommand = - pm->iCommand;    pmRet.iWinId = pm->iWinId;    pmRet.iArg = widget()->maxLength();    pmRet.cArg = 0;    emit outputMessage(fd, &pmRet);    break;  case PUKE_LINED_SET_ECHOMODE:    if(widget() == 0){      debug("PLineEdit: No Widget set");      return;    }    widget()->setEchoMode((QLineEdit::EchoMode) pm->iArg);    pmRet.iCommand = - pm->iCommand;    pmRet.iWinId = pm->iWinId;    pmRet.iArg = widget()->echoMode();    pmRet.cArg = 0;    emit outputMessage(fd, &pmRet);    break;  case PUKE_LINED_SET_TEXT:    if(widget() == 0){      debug("PLineEdit: No Widget set");      return;    }    debug("PukeLine Edit: Got: %s", pm->cArg);    widget()->setText(pm->cArg);    pmRet.iCommand = - pm->iCommand;    pmRet.iWinId = pm->iWinId;    pmRet.iArg = 0;    pmRet.iTextSize = strlen(widget()->text());    pmRet.cArg = new char[strlen(widget()->text())+1];    strcpy(pmRet.cArg, widget()->text());    emit outputMessage(fd, &pmRet);    delete[] pmRet.cArg;    break;  case PUKE_LINED_GET_TEXT:    if(widget() == 0){      debug("PLineEdit: No Widget set");      return;    }    pmRet.iCommand = - pm->iCommand;    pmRet.iWinId = pm->iWinId;    pmRet.iArg = 0;    pmRet.iTextSize = strlen(widget()->text());    pmRet.cArg = new char[strlen(widget()->text())+1];    strcpy(pmRet.cArg, widget()->text());    emit outputMessage(fd, &pmRet);    delete[] pmRet.cArg;    break;  default:    PWidget::messageHandler(fd, pm);  }}

void MainConfigurationWindow::onChangeStartupStatus(int index){    onStartupSetLastDescription->setEnabled(index != 6);    widget()->widgetById("startupStatusInvisibleWhenLastWasOffline")->setEnabled(index == 0);    widget()->widgetById("onStartupSetDescription")->setEnabled(!onStartupSetLastDescription->isChecked() && index != 6);}

void QgsRelationWidgetWrapper::setFeature( const QgsFeature& feature ){  delete ( mRelationWidget );  mRelationWidget = QgsRelationEditorWidget::createRelationEditor( mRelation, feature, context(), widget() );  widget()->layout()->addWidget( mRelationWidget );}

void MainConfigurationWindow::setLanguages(){    ConfigComboBox *languages = static_cast<ConfigComboBox *>(widget()->widgetById("languages"));    languages->setItems(LanguagesManager::languageValues(), LanguagesManager::languageNames());}

void Desktop::HandleEvent( const sf::Event& event ) {	// Activate context.	Context::Activate( m_context );	sf::Vector2f local_pos;	bool check_inside( false );	Widget::Ptr last_receiver( m_last_receiver.lock() );	// If we've got a mouse event, get local mouse position and mark event for being checked against widget's allocation.	if( event.type == sf::Event::MouseMoved ) {		m_last_mouse_pos.x = event.mouseMove.x;		m_last_mouse_pos.y = event.mouseMove.y;		local_pos = TransformToLocal( sf::Vector2f( static_cast<float>( event.mouseMove.x ), static_cast<float>( event.mouseMove.y ) ) );		check_inside = true;	}	else if( event.type == sf::Event::MouseButtonPressed || event.type == sf::Event::MouseButtonReleased ) {		m_last_mouse_pos.x = event.mouseButton.x;		m_last_mouse_pos.y = event.mouseButton.y;		local_pos = TransformToLocal( sf::Vector2f( static_cast<float>( event.mouseButton.x ), static_cast<float>( event.mouseButton.y ) ) );		check_inside = true;	}	for( std::size_t index = 0; index < m_children.size(); ++index ) {		Widget::Ptr widget( m_children[index] );		// Skip widget if not visible.		if( !widget->IsVisible() ) {			continue;		}		bool is_inside( widget->GetAllocation().contains( local_pos ) );		// If the event is a mouse button press, check if we need to focus another widget.		if(			index > 0 &&			event.type == sf::Event::MouseButtonPressed &&			is_inside		) {			m_children.erase( m_children.begin() + index );			m_children.push_front( widget );			RecalculateWidgetLevels();		}		// If inside check is needed, do so for all widgets except the top window.		// Else it would run into trouble when moving the window, for example,		// where the mouse may be outside the widget's allocation.		if( check_inside && !is_inside && index > 0 ) {			continue;		}		// If last receiver is different from current, fake a mouse move event so		// that states are reset correctly. Warning, this is a hack, but it works
C++ widgetChanged函数代码示例
C++ widgGetFromID函数代码示例