C++ QDialog::setAttribute方法代码示例

void MainWindow::configureKaffeine()
{
	QDialog *dialog = new ConfigurationDialog(this);
	dialog->setAttribute(Qt::WA_DeleteOnClose, true);
	dialog->setModal(true);
	dialog->show();
}

void MainWindow::about()
{
    QLabel *label = new QLabel;
    QLabel *pix   = new QLabel;
    label->setText(tr("<p><b>关于</b></p> "
                      "<p>版本:    1.0</p>"
                      "<p>库:      Qt 4.8.1</p>"
                      "<p>数据库:  Sqlite</p>"
                      "<p>作者:    唐昊</p> "
                      "<p>Email:thddaniel92gmail.com</p>"));
    pix->setPixmap(QPixmap("images/money.png"));
    QToolButton *btn = new QToolButton;
    btn->setMinimumSize(60,40);
    btn->setText(tr("关闭"));
    QHBoxLayout *layout = new QHBoxLayout;
    layout->addWidget(pix);
    layout->addWidget(label);
    QHBoxLayout *layout2 = new QHBoxLayout;
    //layout2->addStretch(12);
    layout2->addWidget(btn,Qt::AlignHCenter);
    //layout2->addStretch(12);
    QVBoxLayout *layout3 = new QVBoxLayout;
    layout3->addLayout(layout);
    layout3->addLayout(layout2);
    QDialog *dlg = new QDialog;
    connect(btn,SIGNAL(clicked()),dlg,SLOT(close()));
    dlg->setWindowTitle(tr("关于"));
    dlg->setAttribute(Qt::WA_DeleteOnClose);
    dlg->setLayout(layout3);
    dlg->exec();


}

void AssetUploadDialogFactory::handleUploadFinished(AssetUpload* upload, const QString& hash) {
    if (upload->getError() == AssetUpload::NoError) {
        // show message box for successful upload, with copiable text for ATP hash
        QDialog* hashCopyDialog = new QDialog(_dialogParent);
        
        // delete the dialog on close
        hashCopyDialog->setAttribute(Qt::WA_DeleteOnClose);
        
        // set the window title
        hashCopyDialog->setWindowTitle(tr("Successful Asset Upload"));
        
        // setup a layout for the contents of the dialog
        QVBoxLayout* boxLayout = new QVBoxLayout;
        
        // set the label text (this shows above the text box)
        QLabel* lineEditLabel = new QLabel;
        lineEditLabel->setText(QString("ATP URL for %1").arg(QFileInfo(upload->getFilename()).fileName()));
        
        // setup the line edit to hold the copiable text
        QLineEdit* lineEdit = new QLineEdit;
       
        QString atpURL = QString("%1:%2.%3").arg(URL_SCHEME_ATP).arg(hash).arg(upload->getExtension());
        
        // set the ATP URL as the text value so it's copiable
        lineEdit->insert(atpURL);
        
        // figure out what size this line edit should be using font metrics
        QFontMetrics textMetrics { lineEdit->font() };
        
        // set the fixed width on the line edit
        // pad it by 10 to cover the border and some extra space on the right side (for clicking)
        static const int LINE_EDIT_RIGHT_PADDING { 10 };
        
        lineEdit->setFixedWidth(textMetrics.width(atpURL) + LINE_EDIT_RIGHT_PADDING );
        
        // left align the ATP URL line edit
        lineEdit->home(true);
        
        // add the label and line edit to the dialog
        boxLayout->addWidget(lineEditLabel);
        boxLayout->addWidget(lineEdit);
        
        // setup an OK button to close the dialog
        QDialogButtonBox* buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok);
        connect(buttonBox, &QDialogButtonBox::accepted, hashCopyDialog, &QDialog::close);
        boxLayout->addWidget(buttonBox);
        
        // set the new layout on the dialog
        hashCopyDialog->setLayout(boxLayout);
        
        // show the new dialog
        hashCopyDialog->show();
    } else {
        // display a message box with the error
        showErrorDialog(upload, _dialogParent);
    }
    
    upload->deleteLater();
}

void MainFrame::editOptions()
{
    QDialog *dialog = new QDialog(this);
    dialog->setAttribute(Qt::WA_DeleteOnClose);
    Ui::OptionsDialog ui;
    ui.setupUi(dialog);

    dialog->show();
}

int main(int argc, char*argv[])
{
  QApplication app(argc, argv);
  QDialog dlg;
  Ui::ByteConverterDialog ui;
  ui.setupUi(&dlg);
  dlg.setAttribute(Qt::WA_QuitOnClose);
  dlg.show();
  return app.exec();
}

void AboutDialog::largeLogo(){
	QDialog * d = new QDialog(0);
	d->setAttribute(Qt::WA_DeleteOnClose);
	d->setLayout(new QHBoxLayout(d));
	QLabel *l = new QLabel(d);
	l->setPixmap(QPixmap(":/images/splash_large.png"));
	d->layout()->addWidget(l);
	d->setWindowTitle("TeXstudio");
	d->exec();
}

void IbisHardwareModule::OpenTrackerSettingsDialog()
{
    QDialog * dialog = new QDialog();
    dialog->setAttribute(Qt::WA_DeleteOnClose);
    dialog->setWindowTitle( "Tracker Settings" );
    QVBoxLayout * layout = new QVBoxLayout( dialog );
    QWidget * dlg = m_tracker->CreateSettingsDialog( dialog );
    layout->addWidget( dlg );
    dialog->show();
}

void WindowsApp::OnAppOptions()
{
    QWinWidget *win = new QWinWidget(theApp.m_pMainWnd);
    win->showCentered();

    QDialog *dialog = new QDialog(win);
    Ui::OptionsDialog ui;
    ui.setupUi(dialog);
    dialog->setAttribute(Qt::WA_DeleteOnClose);
    dialog->show();
}

void NSISUpdater::showDialog(const UpdateInfo &info)
{
    // if the version tag is set, there is a newer version.
    QDialog *msgBox = new QDialog;
    msgBox->setAttribute(Qt::WA_DeleteOnClose);

    QIcon infoIcon = msgBox->style()->standardIcon(QStyle::SP_MessageBoxInformation, 0, 0);
    int iconSize = msgBox->style()->pixelMetric(QStyle::PM_MessageBoxIconSize, 0, 0);

    msgBox->setWindowIcon(infoIcon);

    QVBoxLayout *layout = new QVBoxLayout(msgBox);
    QHBoxLayout *hlayout = new QHBoxLayout;
    layout->addLayout(hlayout);

    msgBox->setWindowTitle(tr("New Version Available"));

    QLabel *ico = new QLabel;
    ico->setFixedSize(iconSize, iconSize);
    ico->setPixmap(infoIcon.pixmap(iconSize));
    QLabel *lbl = new QLabel;
    QString txt = tr("<p>A new version of the %1 Client is available.</p>"
                     "<p><b>%2</b> is available for download. The installed version is %3.</p>")
                      .arg(Utility::escape(Theme::instance()->appNameGUI()),
                          Utility::escape(info.versionString()), Utility::escape(clientVersion()));

    lbl->setText(txt);
    lbl->setTextFormat(Qt::RichText);
    lbl->setWordWrap(true);

    hlayout->addWidget(ico);
    hlayout->addWidget(lbl);

    QDialogButtonBox *bb = new QDialogButtonBox;
    bb->setWindowFlags(bb->windowFlags() & ~Qt::WindowContextHelpButtonHint);
    QPushButton *skip = bb->addButton(tr("Skip this version"), QDialogButtonBox::ResetRole);
    QPushButton *reject = bb->addButton(tr("Skip this time"), QDialogButtonBox::AcceptRole);
    QPushButton *getupdate = bb->addButton(tr("Get update"), QDialogButtonBox::AcceptRole);

    connect(skip, &QAbstractButton::clicked, msgBox, &QDialog::reject);
    connect(reject, &QAbstractButton::clicked, msgBox, &QDialog::reject);
    connect(getupdate, &QAbstractButton::clicked, msgBox, &QDialog::accept);

    connect(skip, &QAbstractButton::clicked, this, &NSISUpdater::slotSetSeenVersion);
    connect(getupdate, SIGNAL(clicked()), SLOT(slotOpenUpdateUrl()));

    layout->addWidget(bb);

    msgBox->open();
}

void AlbumCoverChoiceController::ShowCover(const Song& song) {
  QDialog* dialog = new QDialog(this);
  dialog->setAttribute(Qt::WA_DeleteOnClose, true);

  // Use Artist - Album as the window title
  QString title_text(song.albumartist());
  if (title_text.isEmpty()) title_text = song.artist();

  if (!song.album().isEmpty()) title_text += " - " + song.album();

  dialog->setWindowTitle(title_text);

  QLabel* label = new QLabel(dialog);
  label->setPixmap(AlbumCoverLoader::TryLoadPixmap(
      song.art_automatic(), song.art_manual(), song.url().toLocalFile()));

  dialog->resize(label->pixmap()->size());
  dialog->show();
}

void AlbumCoverChoiceController::ShowCover(const Song& song) {
  QDialog* dialog = new QDialog(this);
  dialog->setAttribute(Qt::WA_DeleteOnClose, true);

  // Use (Album)Artist - Album as the window title
  QString title_text(song.effective_albumartist());
  if (!song.effective_album().isEmpty())
    title_text += " - " + song.effective_album();

  QLabel* label = new QLabel(dialog);
  label->setPixmap(AlbumCoverLoader::TryLoadPixmap(
      song.art_automatic(), song.art_manual(), song.url().toLocalFile()));

  // add (WxHpx) to the title before possibly resizing
  title_text += " (" + QString::number(label->pixmap()->width()) + "x" +
                QString::number(label->pixmap()->height()) + "px)";

  // if the cover is larger than the screen, resize the window
  // 85% seems to be enough to account for title bar and taskbar etc.
  QDesktopWidget desktop;
  int current_screen = desktop.screenNumber(this);
  int desktop_height = desktop.screenGeometry(current_screen).height();
  int desktop_width = desktop.screenGeometry(current_screen).width();

  // resize differently if monitor is in portrait mode
  if (desktop_width < desktop_height) {
    const int new_width = (double)desktop_width * 0.95;
    if (new_width < label->pixmap()->width()) {
      label->setPixmap(
          label->pixmap()->scaledToWidth(new_width, Qt::SmoothTransformation));
    }
  } else {
    const int new_height = (double)desktop_height * 0.85;
    if (new_height < label->pixmap()->height()) {
      label->setPixmap(label->pixmap()->scaledToHeight(
          new_height, Qt::SmoothTransformation));
    }
  }

  dialog->setWindowTitle(title_text);
  dialog->setFixedSize(label->pixmap()->size());
  dialog->show();
}

void MainWindow::showPlot()
{
    if(!currentImageSteps->at(currentImageSteps->size()-2))
        return;
//    if(!fp)
//        delete fp;
    QDialog* dlg = new QDialog(this);
//    QHBoxLayout* mainLayout = new QHBoxLayout(dlg);

//    fp = new FitnessPlot(currentImageSteps->at(currentImageSteps->size()-2));
//    fp->activate(currentImageSteps->at(currentImageSteps->size()-2),ui->rBox->value());
//    fp->resize(800,600);

//    mainLayout->addWidget(fp);
//    dlg->setLayout(mainLayout);
    dlg->setAttribute(Qt::WA_DeleteOnClose);
    dlg->resize(800,600);
    dlg->show();
}

void UtmpWebView::SetFrameWindow(int flag)
{
    switch(flag)
    {
        case 0:
            this->close();
            break;
        case 1:
            this->showMinimized();
            break;
        case 2:
        {
            //全局也就只能有一个
            QDialog* d = new QDialog(this,(Qt::WindowMinimizeButtonHint|Qt::WindowMaximizeButtonHint|Qt::WindowCloseButtonHint));
            d->setAttribute(Qt::WA_DeleteOnClose, true);
            QWebInspector* wi = new QWebInspector(d);
            wi->setPage(this->page());
            d->setLayout(new QVBoxLayout());
            d->layout()->setMargin(0);
            d->layout()->addWidget(wi);
            d->show();
            d->resize(600,350);
            break;
        }
        case 3:
        {
            QMessageBox::StandardButton rb = QMessageBox::information(NULL, "from QT", "这是网页让QT弹出的对话框", QMessageBox::Yes | QMessageBox::No, QMessageBox::Yes);
            if(rb == QMessageBox::Yes)
            {
                //这样直接调用，执行速度异常慢
                //this->page()->mainFrame()->evaluateJavaScript("Ext.Msg.alert('from ext','这是QT让网页弹出的对话框');");
                this->page()->mainFrame()->evaluateJavaScript("testFun();");
            }
            break;
        }
        case 4:
        {
            this->reload();
        }
    }
}

void MainWindow::showAbout()
{
    QDialog *about = new QDialog(this);
    about->setAttribute(Qt::WA_DeleteOnClose);
    about->setWindowTitle("About");

    QVBoxLayout *aboutLayout = new QVBoxLayout;
    QLabel *appName = new QLabel("BootLogo Changer 1.0", about);
    QFont font = appName->font();
    font.setPointSize(32);
    font.setBold(true);
    appName->setFont(font);
    appName->setAlignment(Qt::AlignCenter);
    aboutLayout->addWidget(appName);

    QLabel *aboutText = new QLabel("(c) 2013 Sergey Savkin", about);
    aboutLayout->addWidget(aboutText);

    about->setLayout(aboutLayout);
    about->show();
}

void MainWindow::open() {
    if (QMessageBox::Yes == QMessageBox::question(this,tr("Question"),tr("Are you OK?"), \
                                         QMessageBox::Yes | QMessageBox::No, QMessageBox::Yes)) {
        QMessageBox::information(this, tr("Hmmm..."), tr("I'm glad to hear that!"));
    } else {
        QMessageBox::information(this, tr("Hmmm..."), tr("I'm sorry!"));
    }
    //dialog建立在栈上
    /*//QDialog dialog(this);
    //QDialog dialog;
    dialog.setWindowTitle(tr("Hello, dialog!"));
    dialog.exec();
    //QMessageBox::information(this, tr( "Information" ), tr("Open"));
    */
    //dialog建立在堆上
    QDialog *dialog = new QDialog;
    //dialog 使用 new 在堆上分配空间, 却一直没有 delete。可以调用可以调用 deleteLater() 函数,或者是设置 dialog 的 WindowAttribute来delete dialog。
    dialog->setAttribute(Qt::WA_DeleteOnClose); // 或者 dialog->deleteLater();
    dialog->setWindowTitle(tr("hello, dialog!"));
    //dialog->show();
    dialog->open();

}