mainwindow.cpp Example File

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  #include <QtWidgets>

  #include "mainwindow.h"
  #include "stylesheeteditor.h"

  MainWindow::MainWindow()
  {
      ui.setupUi(this);

      ui.nameLabel->setProperty("class", "mandatory QLabel");

      styleSheetEditor = new StyleSheetEditor(this);

      statusBar()->addWidget(new QLabel(tr("Ready")));

      connect(ui.exitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
      connect(ui.aboutQtAction, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
  }

  void MainWindow::on_editStyleAction_triggered()
  {
      styleSheetEditor->show();
      styleSheetEditor->activateWindow();
  }

  void MainWindow::on_aboutAction_triggered()
  {
      QMessageBox::about(this, tr("About Style sheet"),
          tr("The <b>Style Sheet</b> example shows how widgets can be styled "
             "using <a href=\"http://doc.qt.io/qt-5/stylesheet.html\">Qt "
             "Style Sheets</a>. Click <b>File|Edit Style Sheet</b> to pop up the "
             "style editor, and either choose an existing style sheet or design "
             "your own."));
  }