main.cpp Example File | Active Qt 5.6

Qt 5.6 | Active Qt | Simple Example (ActiveQt) | main.cpp Example File

Qt 5.6.2 Reference Documentation

# main.cpp Example File

activeqt/simple/main.cpp

      /****************************************************************************
      **
      ** Copyright (C) 2015 The Qt Company Ltd.
      ** Contact: http://www.qt.io/licensing/
      **
      ** This file is part of the examples of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:BSD$
      ** You may use this file under the terms of the BSD license as follows:
      **
      ** "Redistribution and use in source and binary forms, with or without
      ** modification, are permitted provided that the following conditions are
      ** met:
      **   * Redistributions of source code must retain the above copyright
      **     notice, this list of conditions and the following disclaimer.
      **   * Redistributions in binary form must reproduce the above copyright
      **     notice, this list of conditions and the following disclaimer in
      **     the documentation and/or other materials provided with the
      **     distribution.
      **   * Neither the name of The Qt Company Ltd nor the names of its
      **     contributors may be used to endorse or promote products derived
      **     from this software without specific prior written permission.
      **
      **
      ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
      ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
      ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
      ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
      ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
      **
      ** $QT_END_LICENSE$
      **
      ****************************************************************************/

      #include <QAxBindable>
      #include <QAxFactory>
      #include <QApplication>
      #include <QLayout>
      #include <QSlider>
      #include <QLCDNumber>
      #include <QLineEdit>
      #include <QMessageBox>

      class QSimpleAX : public QWidget, public QAxBindable
      {
          Q_OBJECT
          Q_PROPERTY( QString text READ text WRITE setText )
          Q_PROPERTY( int value READ value WRITE setValue )
      public:
          QSimpleAX(QWidget *parent = 0)
          : QWidget(parent)
          {
              QVBoxLayout *vbox = new QVBoxLayout( this );

              slider = new QSlider( Qt::Horizontal, this );
              LCD = new QLCDNumber( 3, this );
              edit = new QLineEdit( this );

              connect( slider, &QAbstractSlider::valueChanged, this, &QSimpleAX::setValue );
              connect( edit, &QLineEdit::textChanged, this, &QSimpleAX::setText );

              vbox->addWidget( slider );
              vbox->addWidget( LCD );
              vbox->addWidget( edit );
          }

          QString text() const
          {
              return edit->text();
          }
          int value() const
          {
              return slider->value();
          }

      signals:
          void someSignal();
          void valueChanged(int);
          void textChanged(const QString&);

      public slots:
          void setText( const QString &string )
          {
              if ( !requestPropertyChange( "text" ) )
                  return;

              edit->blockSignals( true );
              edit->setText( string );
              edit->blockSignals( false );
              emit someSignal();
              emit textChanged( string );

              propertyChanged( "text" );
          }
          void about()
          {
              QMessageBox::information( this, "About QSimpleAX", "This is a Qt widget, and this slot has been\n"
                                                                "called through ActiveX/OLE automation!" );
          }
          void setValue( int i )
          {
              if ( !requestPropertyChange( "value" ) )
                  return;
              slider->blockSignals( true );
              slider->setValue( i );
              slider->blockSignals( false );
              LCD->display( i );
              emit valueChanged( i );

              propertyChanged( "value" );
          }

      private:
          QSlider *slider;
          QLCDNumber *LCD;
          QLineEdit *edit;
      };

      #include "main.moc"

      QAXFACTORY_DEFAULT(QSimpleAX,
                 "{DF16845C-92CD-4AAB-A982-EB9840E74669}",
                 "{616F620B-91C5-4410-A74E-6B81C76FFFE0}",
                 "{E1816BBA-BF5D-4A31-9855-D6BA432055FF}",
                 "{EC08F8FC-2754-47AB-8EFE-56A54057F34E}",
                 "{A095BA0C-224F-4933-A458-2DD7F6B85D8F}")