Qt Documentation

Qt 5.14
Active Qt

Active Qt

Qt's ActiveX and COM support allows Qt for Windows developers to:

Access and use ActiveX controls and COM objects provided by any ActiveX server in their Qt applications.
Make their Qt applications available as COM servers, with any number of Qt objects and widgets as COM objects and ActiveX controls.

For more information about using ActiveX with Qt, see Building ActiveX servers in Qt.

The ActiveQt framework consists of two modules:

The QAxContainer module is a static library implementing QObject and QWidget subclasses, QAxObject and QAxWidget, that act as containers for COM objects and ActiveX controls.
The QAxServer module is a static library that implements functionality for in-process and executable COM servers. This module provides the QAxAggregated, QAxBindable and QAxFactory classes.

A set of tools is provided to simplify the developing and building of Qt projects that use ActiveX.

To build the static libraries, change into the activeqt directory (usually QTDIR/src/activeqt), and run qmake and your make tool in both the container and the control subdirectory. The qaxcontainer and qaxserver libraries will be linked into QTDIR/lib.

If you are using a shared configuration of Qt enter the plugin subdirectory and run qmake and your make tool to build a plugin that integrates the QAxContainer module into Qt Designer.

Articles and Guides

Licenses and Attributions

The QAxContainer and QAxServer modules are available under commercial licenses from The Qt Company. In addition, they are available under the BSD 3-clause "New" or "Revised" License:

Copyright (C) 2017 The Qt Company Ltd.

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.

See Qt Licensing for further details.

Reference

Examples

© 2020 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.