C++ AlertWindow::show方法代码示例

void About::aboutInit()
{
  setModal(true);
  resize(400, 400);
  setWindowTitle("About");
  setWindowIcon(QIcon("icons/backupsoft.png"));

  QWidget *icon = new QWidget(this);
  icon->setStyleSheet("background-image: url(icons/backupsoft.png)");
  icon->setGeometry(250 , 10, 100, 100);

  QLabel *title = new QLabel("BackupSoft", this);
  title->setFont(QFont("Helvetica", 25, 10, false));
  title->setGeometry(10, 10, 200, 30);

  QLabel *version = new QLabel("Copyright 2010 by\nMichael Kohler and Fabian Gammenthaler\n\nVersion: 1.0", this);
  version->setFont(QFont("Helvetica", 8, 2, false));
  version->setGeometry(10, 70, 200, 55);

  QTextEdit *licence = new QTextEdit(this);
  licence->setGeometry(10, 160, 380, 230);
  licence->setReadOnly(true);

  QFile *file = new QFile("licence.txt");
  if (file->open(QIODevice::ReadOnly)) {
    QTextStream *stream = new QTextStream(file);
    licence->setText(stream->readAll());
  }
  else {
    QString errorMsg = "Could not open licence.txt.. Please make sure it is existent and readable.";
    AlertWindow *alertWin = new AlertWindow("ERROR", "", errorMsg);
    alertWin->show();
  }
}

void ProfileManager::saveProfiles()
{
  QString name = nameField->text();
  QString src = sourceField->text();
  QString dest = destinationField->text();
  QString state = tr("Deactivated");
  if (stateBox->checkState()) {
    state = tr("Activated");
  }
  // Check wether directory even exists
  QDir *srcDir = new QDir(src);
  QDir *destDir = new QDir(dest);
  if (srcDir->exists() && destDir->exists()) {
    QString dataString = "\n" + name + "|" + src + "|" + dest + "|" + state;
    if(origin == 1) {
      QByteArray dataBA = dataString.toLatin1();
      helper->writeFile("profile.bs", true, dataBA);
    }
    if(origin == 2) {
      QString oldProfile;
      for(int i = 0; i < 4; i++) {
        oldProfile.append(extractedInfo.value(i));
        if(i != 3)
          oldProfile.append('|');
      }
      helper->overwriteFile("profile.bs", oldProfile, true, dataString);
    }
    this->close();
  }
  else {
    QString msg = tr("Either the source or the destination path doesn't exist. Please file it accordingly or create the needed directories.");
    AlertWindow *alertDoesntExist = new AlertWindow("ERROR", msg);
    alertDoesntExist->show();
  }
}

QStringList* Helper::readFile(QString aFileName)
{
  // read the data line by line
  QFile *file = new QFile(aFileName);
  QStringList *data = new QStringList();
  if (file->open(QIODevice::ReadOnly) ) {
    // file opened successfully
    QTextStream *tstream = new QTextStream(file);
    while (!tstream->atEnd()) {
      data->append(tstream->readLine());
    }
    file->close();

    // ignore whitespaces
    for (int i = 0; i < data->length(); i++) {
      if (data->value(i) == "") {
        data->removeAt(i);
      }
    }
  }
  else {
    QString msg = tr("Could not open %1.. Please make sure it is existent and readable.").arg(aFileName);
    AlertWindow *alertWin = new AlertWindow("ERROR", msg);
    alertWin->show();
  }

  return data;
}

void Helper::overwriteFile(QString aFileName, QString aProfile, bool aAppend, QString aData)
{
  QStringList *fileData;
  QString data, temp;
  QFile file(aFileName);
  int index;
  bool success;
  fileData = readFile(aFileName);
  for(int i = 0; i < fileData->length(); i++) {
    temp = fileData->value(i);
    if(temp == aProfile) {
      index = i;
      break;
    }
  }
  file.open(QIODevice::WriteOnly);
  success = file.remove();
  if(success) {
    fileData->replace(index, aData);
    for(int i = 0; i < fileData->length(); i++) {
      data = fileData->value(i) + "\n";
      writeFile(aFileName, aAppend, data.toLatin1());
    }
    file.close();
  }
  else {
    QString msg = tr("An error occured while overwriting the configuration file. We are sorry for the inconvenience.");
    AlertWindow *alertWin = new AlertWindow("ERROR", msg);
    alertWin->show();
  }
}

void Helper::writeFile(QString aFileName, bool aAppend, QByteArray aData)
{
  QFile file(aFileName);
  bool success;
  if (aAppend)
    success = file.open(QIODevice::WriteOnly | QIODevice::Append);
  else
    success = file.open(QIODevice::WriteOnly);

  if (success) {
    file.write(aData);
    file.close();
  }
  else {
    QString msg = tr("Could not open %1.. Please make sure it is existent and readable.").arg(aFileName);
    AlertWindow *alertWin = new AlertWindow("ERROR", msg);
    alertWin->show();
  }
}

void Helper::deleteProfile(QString aFileName, QString aProfile)
{
  QStringList *fileData;
  QString data, temp;
  QFile file(aFileName);
  int index;
  bool success;
  bool aAppend = true;
  fileData = readFile(aFileName);
  for(int i = 0; i < fileData->length(); i++) {
    temp = fileData->value(i);
    if(temp == aProfile) {
      index = i;
      break;
    }
  }
  file.open(QIODevice::WriteOnly);
  success = file.remove();
  if(success) {
    fileData->removeAt(index);
    if (fileData->length() == 0) {
      writeFile(aFileName, aAppend, data.toLatin1());
    }
    else {
      for(int i = 0; i < fileData->length(); i++) {
        data = fileData->value(i);
        data.append("\n");
        writeFile(aFileName, aAppend, data.toLatin1());
      }
    }
    file.close();
  }
  else {
    QString msg = tr("Error while overwriting the file. Please try again.");
    AlertWindow *alertWin = new AlertWindow("ERROR", msg);
    alertWin->show();
  }
}