Qt GUI
The Qt GUI module provides classes for windowing system integration, event handling, OpenGL and OpenGL ES integration, 2D graphics, basic imaging, fonts, and text. These classes are used internally by Qt's user interface technologies but can also be used directly, for example to write applications using low-level OpenGL ES graphics APIs.
For application developers writing user interfaces, Qt provides higher level APIs, like Qt Quick, that are much more suitable than the enablers found in the Qt GUI module.
Using the Module
Using a Qt module's C++ API requires linking against the module library, either directly or through other dependencies. Several build tools have dedicated support for this, including CMake and qmake.
Building with CMake
Use the find_package()
command to locate the needed module component in the Qt6
package:
find_package(Qt6 REQUIRED COMPONENTS Gui)
target_link_libraries(mytarget PRIVATE Qt6::Gui)
For more details, see the Build with CMake overview.
Building with qmake
If you use qmake to build your projects, Qt GUI is included by default. To disable Qt GUI, add the following line to your .pro
file:
QT -= gui
Articles and Guides
Reference
Module Evolution
Changes to Qt GUI lists important changes in the module API and functionality that were done for the Qt 6 series of Qt.
Licenses and Attributions
Qt GUI is available under commercial licenses from The Qt Company. In addition, it is available under free software licenses: The GNU Lesser General Public License, version 3, or the GNU General Public License, version 2. See Qt Licensing for further details.
Furthermore, Qt GUI in Qt 6.8.0 may contain third-party modules under following permissive licenses:
BSD 3-Clause "New" or "Revised" License | |
Freetype Project License or GNU General Public License v2.0 only | |
BSD 3-clause "New" or "Revised" License | |
D3D12 Memory Allocator, version f128d39b7a95b4235bd228d231646278dc6c24b2 | MIT License |
Bitstream Vera Font License | |
MIT License | |
MIT License and MIT Open Group variant | |
zlib License | |
Freetype Project License or GNU General Public License v2.0 only | |
MIT License | |
BSD 3-clause "New" or "Revised" License | |
Independent JPEG Group License and BSD 3-Clause "New" or "Revised" License | |
libpng License and PNG Reference Library version 2 | |
MIT License | |
Mipmap generator for D3D12, version 0aa79bad78992da0b6a8279ddb9002c1753cb849 | MIT License |
Apache License 2.0 | |
MIT License | |
MIT License | |
MIT License | |
BSD 2-clause "Simplified" License and Imlib2 License | |
Apache License 2.0 or MIT License | |
MIT License | |
MIT License | |
LCS-Telegraphics License | |
X11 License and Historical Permission Notice and Disclaimer | |
MIT License | |
International Color Consortium License |