自学教程：C++ updateFileList函数代码示例

void soundKonverter::showConfigDialog(){    ConfigDialog *dialog = new ConfigDialog( config, this/*, ConfigDialog::Page(configStartPage)*/ );    connect( dialog, SIGNAL(updateFileList()), m_view, SLOT(updateFileList()) );    dialog->resize( size() );    dialog->exec();    delete dialog;}

void FileFilterBaseItem::setFilter(const QString &filter){    if (filter == m_filter)        return;    m_filter = filter;    m_regExpList.clear();    m_fileSuffixes.clear();    foreach (const QString &pattern, filter.split(QLatin1Char(';'))) {        if (pattern.isEmpty())            continue;        // decide if it's a canonical pattern like *.x        if (pattern.startsWith(QLatin1String("*."))) {            const QString suffix = pattern.right(pattern.size() - 1);            if (!suffix.contains(QLatin1Char('*'))                    && !suffix.contains(QLatin1Char('?'))                    && !suffix.contains(QLatin1Char('['))) {                m_fileSuffixes << suffix;                continue;            }        }        m_regExpList << QRegExp(pattern, Qt::CaseInsensitive, QRegExp::Wildcard);    }    updateFileList();}

void FileSelector::homePressed(){    char *home = getenv("HOME");    m_curDirectory = home;    updateFileList();}

void MythUIFileBrowser::backPressed(){    if (m_isRemote)    {        m_subDirectory = m_parentDir;        if (m_subDirectory.startsWith(m_baseDirectory))        {            m_subDirectory.remove(0, m_baseDirectory.length());            if (m_subDirectory.startsWith("/"))                m_subDirectory.remove(0, 1);        }        m_storageGroupDir = m_parentSGDir;    }    else    {        // move up one directory        int pos = m_subDirectory.lastIndexOf('/');        if (pos > 0)            m_subDirectory = m_subDirectory.left(pos);        else            m_subDirectory = "/";    }    updateFileList();}

void SoundtrackDialog::slotSoundFilesButtonDown(){    int Cpt = 0;    for (int i = 0 ; i < m_SoundFilesListBox->count() ; ++i)        if (m_SoundFilesListBox->currentRow() == i)            ++Cpt;    if (Cpt == 0)        return;    if (Cpt > 1)    {        KMessageBox::error(this, i18n("You can only move files down one at a time."));        return;    }    int Index = m_SoundFilesListBox->currentRow();    if (Index == m_SoundFilesListBox->count())        return;    SoundItem* pitem = static_cast<SoundItem*>(m_SoundFilesListBox->takeItem(Index));    m_SoundFilesListBox->insertItem(Index + 1, pitem);    m_SoundFilesListBox->setCurrentItem(pitem);    updateFileList();}

void MythUIFileBrowser::editLostFocus(){    QString newPath = m_locationEdit->GetText();    SetPath(newPath);    updateFileList();}

void SoundtrackDialog::slotAddDropItems(const KUrl::List& filesUrl){    if (!filesUrl.isEmpty())    {        addItems(filesUrl);        updateFileList();    }}

bool ArchiveFileSelector::Create(void){    bool foundtheme = false;    // Load the theme for this screen    foundtheme = LoadWindowFromXML("mythnative-ui.xml", "archivefile_selector", this);    if (!foundtheme)        return false;    bool err = false;    UIUtilW::Assign(this, m_titleText, "title");    UIUtilE::Assign(this, m_fileButtonList, "filelist", &err);    UIUtilE::Assign(this, m_locationEdit, "location_edit", &err);    UIUtilE::Assign(this, m_backButton, "back_button", &err);    UIUtilE::Assign(this, m_homeButton, "home_button", &err);    UIUtilE::Assign(this, m_nextButton, "next_button", &err);    UIUtilE::Assign(this, m_prevButton, "prev_button", &err);    UIUtilE::Assign(this, m_cancelButton, "cancel_button", &err);    UIUtilE::Assign(this, m_progTitle, "title_text", &err);    UIUtilE::Assign(this, m_progSubtitle, "subtitle_text", &err);    UIUtilE::Assign(this, m_progStartTime, "starttime_text", &err);    if (err)    {        LOG(VB_GENERAL, LOG_ERR, "Cannot load screen 'archivefile_selector'");        return false;    }    if (m_titleText)        m_titleText->SetText(tr("Find File To Import"));    connect(m_nextButton, SIGNAL(Clicked()), this, SLOT(nextPressed()));    connect(m_cancelButton, SIGNAL(Clicked()), this, SLOT(cancelPressed()));    connect(m_prevButton, SIGNAL(Clicked()), this, SLOT(prevPressed()));    connect(m_locationEdit, SIGNAL(LosingFocus()),            this, SLOT(locationEditLostFocus()));    m_locationEdit->SetText(m_curDirectory);    connect(m_backButton, SIGNAL(Clicked()), this, SLOT(backPressed()));    connect(m_homeButton, SIGNAL(Clicked()), this, SLOT(homePressed()));    connect(m_fileButtonList, SIGNAL(itemSelected(MythUIButtonListItem *)),            this, SLOT(itemSelected(MythUIButtonListItem *)));    connect(m_fileButtonList, SIGNAL(itemClicked(MythUIButtonListItem *)),            this, SLOT(itemClicked(MythUIButtonListItem *)));    BuildFocusList();    SetFocusWidget(m_fileButtonList);    updateSelectedList();    updateFileList();    return true;}

FileFilterBaseItem::FileFilterBaseItem(QObject *parent) :    QmlProjectContentItem(parent),    m_recurse(RecurseDefault){    m_updateFileListTimer.setSingleShot(true);    m_updateFileListTimer.setInterval(50);    connect(&m_dirWatcher, SIGNAL(directoryChanged(QString)), this, SLOT(updateFileList()));    connect(&m_updateFileListTimer, SIGNAL(timeout()), this, SLOT(updateFileListNow()));}

void FileFilterBaseItem::setDirectory(const QString &dirPath){    if (m_rootDir == dirPath)        return;    m_rootDir = dirPath;    emit directoryChanged();    updateFileList();}

void SoundtrackDialog::slotSoundFilesButtonLoad(){    QPointer<KFileDialog> dlg = new KFileDialog(QString(), QString(), this);    dlg->setOperationMode(KFileDialog::Opening);    dlg->setMode(KFile::File);    dlg->setFilter(QString("*.m3u|Playlist (*.m3u)"));    dlg->setWindowTitle(i18n("Load playlist"));    if (dlg->exec() != KFileDialog::Accepted)    {	delete dlg;        return;    }    QString  filename = dlg->selectedFile();    if (!filename.isEmpty())    {        QFile file(filename);        if (file.open(QIODevice::ReadOnly|QIODevice::Text))        {            QTextStream in(&file);            KUrl::List playlistFiles;            while (!in.atEnd())            {                QString line = in.readLine();                // we ignore the extended information of the m3u playlist file                if (line.startsWith('#') || line.isEmpty())                    continue;                KUrl fUrl(line);                if (fUrl.isValid())                {                    if (fUrl.isLocalFile())                    {                        playlistFiles << fUrl;                    }                }            }            if (!playlistFiles.isEmpty())            {                m_SoundFilesListBox->clear();                addItems(playlistFiles);                updateFileList();            }        }    }    delete dlg;}

void FileSelector::backPressed(){    // move up one directory    int pos = m_curDirectory.lastIndexOf('/');    if (pos > 0)        m_curDirectory = m_curDirectory.left(pos);    else        m_curDirectory = "/";    updateFileList();}

void FileFilterBaseItem::setRecursive(bool recurse){    bool oldRecursive = recursive();    if (recurse)        m_recurse = Recurse;    else            m_recurse = DoNotRecurse;    if (recurse != oldRecursive)        updateFileList();}

/** */fn           void addFile() */brief        添加一个新文件 */return       void 无 */void CBrowseWnd::addFile(){    int fileId = 0;    int count = ListView_GetItemCount(list_.m_hWnd);    char filename[256] = "";    for (int i = 0; i < count; i++)    {        ListView_GetItemText(list_.m_hWnd, i, 0, filename, sizeof(filename)-1);        if (NULL != strstr(filename, NEW_FILE_NAME))        {            if (atoi(&filename[strlen(NEW_FILE_NAME)]) >= fileId)            {                fileId = atoi(&filename[strlen(NEW_FILE_NAME)]) + 1;            }        }    }    sprintf_s(filename, NEW_FILE_NAME"%d", fileId);    char path[1024] = "";    GetCurrentDirectory(MAX_PATH, path);    int len = strlen(path);    sprintf_s(&path[len], sizeof(path)-len-1, "//%s//%s", tempPath_, filename);    char localPath[1024] = "";    PathCanonicalize(localPath, path);    char remotePath[1024] = "";    path_.GetWindowText(remotePath, sizeof(remotePath)-1);    strcat_s(remotePath, filename);    if (!PathFileExists(tempPath_))    {        ::CreateDirectory(tempPath_, NULL);    }    FILE *file = NULL;    fopen_s(&file, localPath, "w+");    fwrite(filename, 1, strlen(filename), file);    fclose(file);    int ret = sftp_upload_file(&ssh_param_, localPath, remotePath);    if (0 != ret) return;    updateFileList(TreeView_GetSelection(tree_.m_hWnd));}

void SoundtrackDialog::readSettings(){    m_rememberSoundtrack->setChecked(m_sharedData->soundtrackRememberPlaylist);    m_loopCheckBox->setChecked(m_sharedData->soundtrackLoop);    connect( m_sharedData->mainPage, SIGNAL(signalTotalTimeChanged(const QTime&)),             this, SLOT(slotImageTotalTimeChanged(const QTime&) ) );    // if tracks are already set in m_sharedData, add them now    if (!m_sharedData->soundtrackUrls.isEmpty())        addItems(m_sharedData->soundtrackUrls);    updateFileList();    updateTracksNumber();}

void MythUIFileBrowser::homePressed(){    if (m_isRemote)    {        m_subDirectory = "";        m_storageGroupDir = "";    }    else    {        char *home = getenv("HOME");        m_subDirectory = home;    }    updateFileList();}

void MythUIFileBrowser::PathClicked(MythUIButtonListItem *item){    if (!item)        return;        MFileInfo finfo = item->GetData().value<MFileInfo>();    if (finfo.isFile())    {        if (m_retObject)        {            DialogCompletionEvent *dce =                new DialogCompletionEvent(m_id, 0, finfo.filePath(),                                          item->GetData());            QCoreApplication::postEvent(m_retObject, dce);        }        Close();        return;    }    if (!finfo.isDir())        return;    if (finfo.isParentDir())    {        backPressed();    }    else    {        if (finfo.isRemote())        {            m_subDirectory = finfo.subDir();            m_storageGroupDir = finfo.storageGroupDir();        }        else        {            m_subDirectory = finfo.filePath();            m_storageGroupDir = "";        }    }    updateFileList();}

void SoundtrackDialog::slotSoundFilesButtonDelete(){    int Index = m_SoundFilesListBox->currentRow();    if( Index < 0 )       return;    SoundItem* pitem = static_cast<SoundItem*>(m_SoundFilesListBox->takeItem(Index));    m_urlList.removeAll(pitem->url());    m_soundItems->remove(pitem->url());    m_timeMutex->lock();    m_tracksTime->remove(pitem->url());    updateTracksNumber();    m_timeMutex->unlock();    delete pitem;    slotSoundFilesSelected(m_SoundFilesListBox->currentRow());    if (m_SoundFilesListBox->count() == 0) m_previewButton->setEnabled(false);    updateFileList();}

/** */fn           void runSftp(const char *path) */brief        运行SFTP客户端 */param[in]    const char * path */return       void 无 */void CBrowseWnd::runSftp(const char *path){    _beginthread(sftp_thread_func, 0, &ssh_param_);    // 等待连接完成    for (int i = 0; i < 100; i++)    {        if (NULL != ssh_param_.channel) break;        Sleep(100);    }    if (NULL == path) return;    HTREEITEM item = createItem(path);    updateFileList(item);    processExpand_ = true;}

bool MythUIFileBrowser::Create(){    if (!CopyWindowFromBase(m_widgetName, this))        return false;    m_fileList = dynamic_cast<MythUIButtonList *>(GetChild("filelist"));    m_locationEdit = dynamic_cast<MythUITextEdit *>(GetChild("location"));    m_okButton = dynamic_cast<MythUIButton *>(GetChild("ok"));    m_cancelButton = dynamic_cast<MythUIButton *>(GetChild("cancel"));    m_backButton = dynamic_cast<MythUIButton *>(GetChild("back"));    m_homeButton = dynamic_cast<MythUIButton *>(GetChild("home"));    m_previewImage = dynamic_cast<MythUIImage *>(GetChild("preview"));    m_infoText = dynamic_cast<MythUIText *>(GetChild("info"));    m_filenameText = dynamic_cast<MythUIText *>(GetChild("filename"));    m_fullpathText = dynamic_cast<MythUIText *>(GetChild("fullpath"));    if (!m_fileList || !m_locationEdit || !m_okButton || !m_cancelButton)    {        LOG(VB_GENERAL, LOG_ERR, "MythUIFileBrowser: Your theme is missing"            " some UI elements! Bailing out.");        return false;    }    connect(m_fileList, SIGNAL(itemClicked(MythUIButtonListItem *)),            SLOT(PathClicked(MythUIButtonListItem *)));    connect(m_fileList, SIGNAL(itemSelected(MythUIButtonListItem *)),            SLOT(PathSelected(MythUIButtonListItem *)));    connect(m_locationEdit, SIGNAL(LosingFocus()), SLOT(editLostFocus()));    connect(m_okButton, SIGNAL(Clicked()), SLOT(OKPressed()));    connect(m_cancelButton, SIGNAL(Clicked()), SLOT(cancelPressed()));    if (m_backButton)        connect(m_backButton, SIGNAL(Clicked()), SLOT(backPressed()));    if (m_homeButton)        connect(m_homeButton, SIGNAL(Clicked()), SLOT(homePressed()));    BuildFocusList();    updateFileList();    return true;}

void FileFilterBaseItem::setPathsProperty(const QStringList &path){    m_explicitFiles = path;    updateFileList();}

MainWindow::MainWindow(QWidget *parent) :    QMainWindow(parent),    ui(new Ui::MainWindow){    ui->setupUi(this);    //about window    this->aboutWindow = new AboutWindow();    this->aboutWindow->hide();    this->aboutWindow->move(this->geometry().center()-this->aboutWindow->geometry().center());    //calibrate Dialog    this->calibrateDialog = new CalibrateDialog();    this->calibrateDialog->hide();    this->calibrateDialog->move(this->geometry().center()-this->calibrateDialog->geometry().center());    //option Dialog    this->optionDialog = new OptionDialog();    this->optionDialog->hide();    this->optionDialog->move(this->geometry().center()-this->optionDialog->geometry().center());    //slice dialog    this->sliceDialog = new SliceDialog(ui->glWidget, this);    this->sliceDialog->hide();    this->sliceDialog->move(this->geometry().center()-this->sliceDialog->geometry().center());    //macros window    this->macrosWindow = new MacrosWindow();    this->macrosWindow->hide();    this->macrosWindow->move(this->geometry().center()-this->macrosWindow->geometry().center());    connect(this->macrosWindow, SIGNAL(buttonAdded(MacroButton*)), this, SLOT(addMacroBtn(MacroButton*)));    connect(this->macrosWindow, SIGNAL(buttonRemoved(MacroButton*)), this, SLOT(removeMacroBtn(MacroButton*)));    //sd card window    this->sdCardWindow = new SDCardWindow();    this->sdCardWindow->hide();    this->sdCardWindow->move(this->geometry().center()-this->sdCardWindow->geometry().center());    connect(this->sdCardWindow, SIGNAL(sdFile_selected(QString)), this, SLOT(sdFile_selected(QString)));    connect(this->optionDialog, SIGNAL(slicerPathChanged(QString)), this->sliceDialog, SLOT(updateSlicerPath(QString)));    connect(this->optionDialog, SIGNAL(outputPathChanged(QString)), this->sliceDialog, SLOT(updateOutputPath(QString)));    connect(this->optionDialog, SIGNAL(newSize(QVector3D)), this, SLOT(updatadeSize(QVector3D)));    connect(this->optionDialog, SIGNAL(newList(QList<Material*>*)), this->sliceDialog, SLOT(setMaterialList(QList<Material*>*)));    connect(this->sliceDialog, SIGNAL(fileSliced(QString)), this, SLOT(loadFile(QString)));    //set version number    this->setWindowTitle("YARRH v"+QString::number(VERSION_MAJOR)+"."+QString::number(VERSION_MINOR)+"."+QString::number(VERSION_REVISION));    this->aboutWindow->setVersion(VERSION_MAJOR,VERSION_MINOR,VERSION_REVISION);    //setting up printer and its thread    this->printerObj = new Printer();    QThread *qthread = new QThread();    //connecting ui to printer    connect(printerObj, SIGNAL(write_to_console(QString)), ui->inConsole, SLOT(appendPlainText(QString)), Qt::QueuedConnection);    connect(this->macrosWindow, SIGNAL(writeToPrinter(QString)), printerObj, SLOT(send_now(QString)),Qt::QueuedConnection);    connect(ui->fanSpinBox, SIGNAL(valueChanged(int)), printerObj, SLOT(setFan(int)), Qt::QueuedConnection);    ui->fanSpinBox->blockSignals(true);    connect(this->printerObj, SIGNAL(SDFileList(QStringList)), this->sdCardWindow, SLOT(updateFileList(QStringList)));    connect(this->printerObj, SIGNAL(uploadProgress(int,int)), this->sdCardWindow, SLOT(updateProgress(int,int)));    this->sdCardWindow->setPrinter(this->printerObj);    //connecting move btns    connect(ui->homeX, SIGNAL(clicked()), printerObj, SLOT(homeX()), Qt::QueuedConnection);    connect(ui->homeY, SIGNAL(clicked()), printerObj, SLOT(homeY()), Qt::QueuedConnection);    connect(ui->homeAll, SIGNAL(clicked()), printerObj, SLOT(homeAll()), Qt::QueuedConnection);    //connect monit temp checkbox    connect(ui->graphGroupBox, SIGNAL(toggled(bool)), printerObj, SLOT(setMonitorTemperature(bool)),Qt::QueuedConnection);    //connect printer to temp widget    connect(printerObj, SIGNAL(currentTemp(double,double,double)), this, SLOT(drawTemp(double,double,double)));    connect(printerObj, SIGNAL(progress(int,int)), this, SLOT(updateProgress(int,int)));    connect(printerObj, SIGNAL(connected(bool)), this, SLOT(printerConnected(bool)));    //setting ui temp from gcode    connect(printerObj, SIGNAL(settingTemp1(double)), this, SLOT(setTemp1FromGcode(double)));    connect(printerObj, SIGNAL(settingTemp3(double)), this, SLOT(setTemp3FromGcode(double)));    //updating head position in ui    connect(printerObj, SIGNAL(currentPosition(QVector3D)), this, SLOT(updateHeadPosition(QVector3D)));    //print finished signal    connect(printerObj, SIGNAL(printFinished(bool)), this, SLOT(printFinished(bool)));    //connect calibration dialog to printer    connect(calibrateDialog, SIGNAL(writeToPrinter(QString)), printerObj, SLOT(send_now(QString)),Qt::QueuedConnection);    //connect z slider    connect(ui->zSlider, SIGNAL(valueChanged(int)), this, SLOT(moveZ(int)));    connect(ui->zSlider, SIGNAL(sliderMoved(int)), this, SLOT(updateZ(int)));    //connect action load    connect(ui->actionLoad, SIGNAL(triggered()), this, SLOT(loadFile()));    printerObj->moveToThread(qthread);    qthread->start(QThread::HighestPriority);    this->portEnum = new QextSerialEnumerator(this);    this->portEnum->setUpNotifications();    QList<QextPortInfo> ports = this->portEnum->getPorts();    //finding avalible ports    foreach (QextPortInfo info, ports) {        ui->portCombo->addItem(info.portName);    }