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An Introduction to Qt 4
AnAn IntroductionIntroduction toto QtQt 44 Jason Trent [email protected] OOuutltliinnee . Why Trolltech? . Why Qt? . Qt 4 Widgets, Datatypes, and Structures . Qt Designer . qmake . Qt without C++ . Demo WWhhyy TTrroolllltetecchh?? .. QQtt aanndd QQttooppiiaa CCoorree aarree OOppeenn SSoouurrccee .. SSuuppppoorrtteedd bbyy mmuullttii--mmiilllliioonn ddoollllaarr ccoommppaannyy WWhhyy QQt?t? .. MMuullttii--ppllaattffoorrmm – No “virtual machines” or emulation layers – Native compilation for Windows, X11, and Mac • Utilizes core OS technologies (Core, Aero, …) – Extensions - ActiveQt, Motif Migration WWhhyy QQt?t? Over 400 C++ Classes . Not just a GUI toolkit – File handling – Networking – Process handling – Threading – Database access – Event loop processing – XML processing – OpenGL integration – and beyond WWhhyy QQt?t? .. IInntteerrnnaattiioonnaalliizzaattiioonn – Built in support for Unicode and Translation • Language and font aware layouts • Bidirectional font support • Mixed-international interface .. SSeeee QQtt LLiinngguuiisstt ffoorr mmoorree WWhhyy QQt?t? .. NNoott jjuusstt mmuuttllii--ppllaattiiffoorrmm,, mmuullttii--aarrcchhiitteeccttuurree .. QQttooppiiaa CCoorree 44 SSeerriieess – Support for embedded devices • Cell phones, PDAs, etc… – Supports Qt4 widgets with little to no code change QQWWiiddggeett TThhee mmeeeekk mmaayy iinnhheerriitt tthhee eeaarrtthh…… ……bbuutt tthhee eeaarrtthh sshhaallll iinnhheerriitt QQWWiiddggeett QWidget QQtt 44 WWiiddggeetsts .. IInnhheerriitt tthhee aallll--ppoowweerrffuull QQWWiiddggeett .. IInncclluuddee:: -
Qt Framework
About Qt Qt is a framework to develop cross-platform applications. Currently, the supported platforms are Windows, Linux, macOS, Android, iOS, Embedded Linux and some others. Genarally, it means that the programmer may develop the code on one platform but compile, link and run it on another platform. But it also means that Qt needs help: to develop software it must cooperate with development tools on specific platforms, for example in case of Windows with Visual Studio. Qt is well-known for its tools for developing graphical user interfaces (GUI) , but it also provides powerful tools for threads, networking and communication (Bluetooth, serial port, web), 3D graphics, multimedia, SQL databases, etc. Qt has its own Integrated Development Environment (IDE): QtCreator. History: 1991: version 1.0 as cross-platform GUI programming toolkit was developed and implemented by TrollTech (Norway). 2005: version 4.0 was a big step ahead but the compatibility with older versions was lost. 2008: TrollTech was sold to Nokia. 2012: Nokia Qt division was sold to Digia (Finland). 2014: Digia transferred the Qt business to Qt Company. The latest Long Term Support (LTS) version is 5.12. Official website: https://www.qt.io/ Installation The link is https://www.qt.io/download. Select the non-commercial and open source version. It may be possible that you must register yourself creating a new passworded account. Select the latest stable release and the C/C++ development system(s) you are going to use. Tip: the Qt installer proposes to store the stuff in folder C:\Qt. To avoid later complications, agree. -
The Glib/GTK+ Development Platform
The GLib/GTK+ Development Platform A Getting Started Guide Version 0.8 Sébastien Wilmet March 29, 2019 Contents 1 Introduction 3 1.1 License . 3 1.2 Financial Support . 3 1.3 Todo List for this Book and a Quick 2019 Update . 4 1.4 What is GLib and GTK+? . 4 1.5 The GNOME Desktop . 5 1.6 Prerequisites . 6 1.7 Why and When Using the C Language? . 7 1.7.1 Separate the Backend from the Frontend . 7 1.7.2 Other Aspects to Keep in Mind . 8 1.8 Learning Path . 9 1.9 The Development Environment . 10 1.10 Acknowledgments . 10 I GLib, the Core Library 11 2 GLib, the Core Library 12 2.1 Basics . 13 2.1.1 Type Definitions . 13 2.1.2 Frequently Used Macros . 13 2.1.3 Debugging Macros . 14 2.1.4 Memory . 16 2.1.5 String Handling . 18 2.2 Data Structures . 20 2.2.1 Lists . 20 2.2.2 Trees . 24 2.2.3 Hash Tables . 29 2.3 The Main Event Loop . 31 2.4 Other Features . 33 II Object-Oriented Programming in C 35 3 Semi-Object-Oriented Programming in C 37 3.1 Header Example . 37 3.1.1 Project Namespace . 37 3.1.2 Class Namespace . 39 3.1.3 Lowercase, Uppercase or CamelCase? . 39 3.1.4 Include Guard . 39 3.1.5 C++ Support . 39 1 3.1.6 #include . 39 3.1.7 Type Definition . 40 3.1.8 Object Constructor . 40 3.1.9 Object Destructor . -
Linux from Scratch 版本 R11.0-36-中⽂翻译版 发布于 2021 年 9 ⽉ 21 ⽇
Linux From Scratch 版本 r11.0-36-中⽂翻译版 发布于 2021 年 9 ⽉ 21 ⽇ 由 Gerard Beekmans 原著 总编辑:Bruce Dubbs Linux From Scratch: 版本 r11.0-36-中⽂翻译版 : 发布于 2021 年 9 ⽉ 21 ⽇ 由 由 Gerard Beekmans 原著和总编辑:Bruce Dubbs 版权所有 © 1999-2021 Gerard Beekmans 版权所有 © 1999-2021, Gerard Beekmans 保留所有权利。 本书依照 Creative Commons License 许可证发布。 从本书中提取的计算机命令依照 MIT License 许可证发布。 Linux® 是Linus Torvalds 的注册商标。 Linux From Scratch - 版本 r11.0-36-中⽂翻译版 ⽬录 序⾔ .................................................................................................................................... viii i. 前⾔ ............................................................................................................................ viii ii. 本书⾯向的读者 ............................................................................................................ viii iii. LFS 的⽬标架构 ............................................................................................................ ix iv. 阅读本书需要的背景知识 ................................................................................................. ix v. LFS 和标准 ..................................................................................................................... x vi. 本书选择软件包的逻辑 .................................................................................................... xi vii. 排版约定 .................................................................................................................... xvi viii. 本书结构 ................................................................................................................. -
Free Software for the Modelling and Simulation of a Mini-UAV an Analysis
Mathematics and Computers in Science and Industry Free Software for the Modelling and Simulation of a mini-UAV An Analysis Tomáš Vogeltanz, Roman Jašek Department of Informatics and Artificial Intelligence Tomas Bata University in Zlín, Faculty of Applied Informatics nám. T.G. Masaryka 5555, 760 01 Zlín, CZECH REPUBLIC [email protected], [email protected] Abstract—This paper presents an analysis of free software Current standards for handling qualities apply to only which can be used for the modelling and simulation of a mini- piloted aircraft and there are no specific standards for UAV UAV (Unmanned Aerial Vehicle). Every UAV design, handling qualities. Relevant article discussing dynamic stability construction, implementation and test is unique and presents and handling qualities for small UAVs is [4]. [2] different challenges to engineers. Modelling and simulation software can decrease the time and costs needed to development Any UAV system depends on its mission and range, of any UAV. First part of paper is about general information of however, most UAV systems include: airframe and propulsion the UAV. The fundamentals of airplane flight mechanics are systems, control systems and sensors to fly the UAV, sensors mentioned. The following section briefly describes the modelling to collect information, launch and recovery systems, data links and simulation of the UAV and a flight dynamics model. The to get collected information from the UAV and send main section summarizes free software for the modelling and commands to it, and a ground control station. [3] [5] simulation of the UAV. There is described the following software: Digital Datcom, JSBSim, FlightGear, and OpenEaagles. -
Release 0.11 Todd Gamblin
Spack Documentation Release 0.11 Todd Gamblin Feb 07, 2018 Basics 1 Feature Overview 3 1.1 Simple package installation.......................................3 1.2 Custom versions & configurations....................................3 1.3 Customize dependencies.........................................4 1.4 Non-destructive installs.........................................4 1.5 Packages can peacefully coexist.....................................4 1.6 Creating packages is easy........................................4 2 Getting Started 7 2.1 Prerequisites...............................................7 2.2 Installation................................................7 2.3 Compiler configuration..........................................9 2.4 Vendor-Specific Compiler Configuration................................ 13 2.5 System Packages............................................. 16 2.6 Utilities Configuration.......................................... 18 2.7 GPG Signing............................................... 20 2.8 Spack on Cray.............................................. 21 3 Basic Usage 25 3.1 Listing available packages........................................ 25 3.2 Installing and uninstalling........................................ 42 3.3 Seeing installed packages........................................ 44 3.4 Specs & dependencies.......................................... 46 3.5 Virtual dependencies........................................... 50 3.6 Extensions & Python support...................................... 53 3.7 Filesystem requirements........................................ -
Project Skeleton for Scientific Software
Computational Photonics Group Department of Electrical and Computer Engineering Technical University of Munich bertha: Project Skeleton for Scientific Software Michael Riesch , Tien Dat Nguyen , and Christian Jirauschek Department of Electrical and Computer Engineering, Technical University of Munich, Arcisstr. 21, 80333 Munich, Germany [email protected] Received: 10 December 2019 / Accepted: 04 March 2020 / Published: 23 March 2020 * Abstract — Science depends heavily on reliable and easy-to-use software packages, such as mathematical libraries or data analysis tools. Developing such packages requires a lot of effort, which is too often avoided due to the lack of funding or recognition. In order to reduce the efforts required to create sustainable software packages, we present a project skeleton that ensures the best software engineering practices from the start of a project, or serves as reference for existing projects. 1 Introduction In a recent essay in Nature [1], a familiar dilemma in science was addressed. On the one hand, science relies heavily on open-source software packages, such as libraries for mathematical operations, implementations of numerical methods, or data analysis tools. As a consequence, those software packages need to work reliably and should be easy to use. On the other hand, scientific software is notoriously underfunded and the required efforts are achieved as side projects or by the scientists working in their spare time. Indeed, a lot of effort has to be invested beyond the work on the actual implementation – which is typically a formidable challenge on its own. This becomes apparent from literature on software engineering in general (such as the influential “Pragmatic Programmer” [2]), and in scientific contexts in particular (e.g., [3–6]). -
Pyqt for Autodesk Maya 2015 64Bit
PyQt for Autodesk Maya 2015 64bit Written by Cyrille Fauvel – Autodesk Developer Network (April 2013) Updated by Vijaya Prakash – Autodesk Developer Network (April 2014) Additional Qt instructions available here - http://around-the-corner.typepad.com/adn/2014/04/building-sip-and-pyqt-for-maya-2015.html Building SIP, and PyQt for Maya 2015 PyQt [http://www.riverbankcomputing.co.uk] is a python binding to the Qt library. Because Maya uses Qt internally, you can use the PyQt modules in Maya python scripts to create custom UI. PyQt does not have the same licensing as Maya, Qt, or Python. Please consult the PyQt website for information about licensing for PyQt. Download PyQt: http://www.riverbankcomputing.com/static/Downloads/PyQt4/ Download SIP: http://www.riverbankcomputing.com/software/sip/download The following are instructions for building a copy of the PyQt modules that have been known to work with Maya. Maya 2015 uses Qt4.8.5 which is binary compatible with the latest version of PyQt - 4.10.4 / SIP - 4.15.5 (at time of writing, April 2014). However, you do not have to use these versions if you prefer using an older version, all you need is to use a version compatible with Qt4.8.5. Note that it’s important to use the Maya modified version of the Qt source code. A copy of the customized Qt 4.8.5 source is available from Autodesk's Open Source web-site (http://www.autodesk.com/lgplsource) and includes text files describing how to configure, build and install Qt for each platform supported by Maya. -
1 Australian Synchrotron
EPICS Qt Update Paul Martin 1 Australian Synchrotron • 3GeV, 216m circumference synchrotron • 8 Beamlines • 12 Software Engineers • IMBL – Worlds Widest Beam - MRT Clinical Program – Safety Critical • Melbourne, Australia • Nearest other facilities: Taiwan, Thailand, Japan • 16th Most Urbanized Country • World’s most livable cities • Hosting ICALEPCS in 2015 2 Qt • Qt is a cross-platform application and UI framework for developers using C++ – Windows,OS X, Linux, Embedded Linux, Android, iOS, vxWorks, Win CE, Amiga OS • Open Source (LPGL v2.1) Qt Designer • Trolltech -> Nokia -> Digia, • Development tools: Qt Creator, Qt Designer, Qmake, Qt Linguist, Qt Assistant, Integration into Visual Studio • Rich set of Widgets and other classes (1000+), Qwt (125+) • Very Good Documentation, help, examples • All Qt Objects contain powerful object communication Qt Creator mechanism (Signal+Slots) • GUI Layout widgets • Qt Project: www.qt-project.org 3 EPICS Qt – Team • Started 2009 – Anthony Owen, Andrew Rhyder, Glenn Jackson • Joined 2011 – Andy Starritt • Joined 2012 – Ricardo Fernandez • Joined 2013 – Zai Wang (1 year contract) 4 EPICS Qt – Rapid GUI Development • Adds Channel Access to standard Qt Widgets and Data Classes • Rapid GUI Dev – Drag and Drop EPICS aware components in Qt Designer • Macro Substitutions for PV names and other GUI functions Qt Designer Channel Access running at design time .ui file – presented using QEGui on any platform (windows / linux) 5 EPICS Qt – Other App Types QCaString Qt Creator QCaInteger QCaFloating QCaByteArray -
Kdesrc-Build Script Manual
kdesrc-build Script Manual Michael Pyne Carlos Woelz kdesrc-build Script Manual 2 Contents 1 Introduction 8 1.1 A brief introduction to kdesrc-build . .8 1.1.1 What is kdesrc-build? . .8 1.1.2 kdesrc-build operation ‘in a nutshell’ . .8 1.2 Documentation Overview . .9 2 Getting Started 10 2.1 Preparing the System to Build KDE . 10 2.1.1 Setup a new user account . 10 2.1.2 Ensure your system is ready to build KDE software . 10 2.1.3 Setup kdesrc-build . 12 2.1.3.1 Install kdesrc-build . 12 2.1.3.2 Prepare the configuration file . 12 2.1.3.2.1 Manual setup of configuration file . 12 2.2 Setting the Configuration Data . 13 2.3 Using the kdesrc-build script . 14 2.3.1 Loading project metadata . 14 2.3.2 Previewing what will happen when kdesrc-build runs . 14 2.3.3 Resolving build failures . 15 2.4 Building specific modules . 16 2.5 Setting the Environment to Run Your KDEPlasma Desktop . 17 2.5.1 Automatically installing a login driver . 18 2.5.1.1 Adding xsession support for distributions . 18 2.5.1.2 Manually adding support for xsession . 18 2.5.2 Setting up the environment manually . 19 2.6 Module Organization and selection . 19 2.6.1 KDE Software Organization . 19 2.6.2 Selecting modules to build . 19 2.6.3 Module Sets . 20 2.6.3.1 The basic module set concept . 20 2.6.3.2 Special Support for KDE module sets . -
The Central Control Room Man-Machine Interface at the Clinton P
© 1973 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. THE CENTRAL CONTROL ROOM MAN-MACHINE INTERFACE AT THE CLINTON P. ANDERSON MESON PHYSICS FACILITY (LAMPF)* B. L. Hartway, J. Bergstein, C. M. Plopper University of California Los Alamos Scientific Laboratory Los Alamos, New Mexico Summary tial that the data be organized and displayed for the operator in a format which quickly conveyed the status The control system for the Clinton P. Anderson of the whole accelerator or any subsystems under study. Meson Physics Facility (LAMPF) is organized around an Similarly, there had to be a simple but flexible scheme on-line digital computer. Accelerator operations are for the operator to manipulate the various controls. conducted from the Central Control Room (CCR) where two The experience gained from the prototype console identical but independent operator consoles provide the was incorporated in the design for the LAMPF operator's This paper traces the evolution man-machine interface. console. A mockup of the console was built and evalu- of the man-machine interface from the initial concepts ated from many points of view. Several human-factor Special emphasis is given of a computer control system. studies were performed to determine the optimum shape of to the human factors which influenced the development. the console and the location for various controls. -
Soloud Audio Engine
SoLoud Audio Engine Jari Komppa May 21, 2014 Contents 1 Introduction 2 1.1 How Easy? ..................................... 2 1.2 How Free? ..................................... 2 1.3 How Powerful? ................................... 3 1.4 There’s a Catch, Right? .............................. 3 2 Legal 4 2.1 SoLoud Proper ................................... 4 2.2 OGG Support ................................... 4 2.3 Speech Synthesizer ................................ 4 2.4 Fast Fourier Transform (FFT) ........................... 5 2.5 Sfxr ........................................ 5 2.6 Libmodplug .................................... 6 3 Quick Start 7 3.1 Download SoLoud ................................. 7 3.2 Add files to your project ............................. 7 3.3 Include files .................................... 7 3.4 Variables ..................................... 7 3.5 Initialize SoLoud .................................. 7 3.6 Set up sound sources ............................... 8 3.7 Play sounds .................................... 8 3.8 Take control of the sound ............................. 8 3.9 Cleanup ...................................... 8 3.10 Enjoy ....................................... 8 4 Premake 9 5 Concepts 10 5.1 Back end ..................................... 10 5.2 Channel ...................................... 10 5.3 Stream ...................................... 10 5.4 Clipping ...................................... 10 5.5 Sample ...................................... 11 5.6 Sample Rate ...................................