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Qt Tutorials For Beginners 5 - Qt Signal and slots
 
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Code for this video http://www.codebind.com/c-tutorial/qt-tutorials-for-beginners-qt-signal-and-slots/ In this video we will learn How Qt Signals and Slots Work. Understanding Signals and Slot in Qt is not very difficult. Signals and slots are the basic foundation of Qt C++ GUI Application. In this QT tutorial we will learn signal and slots tutorial fnctions work by creating an example application. How to create button click event and Connecting signals and slots by name at run time, signals/slots and namespaces -------------------Online Courses to learn---------------------------- Blockchain Course - http://bit.ly/2Mmzcv0 Big Data Hadoop Course - http://bit.ly/2MV97PL Java - https://bit.ly/2H6wqXk C++ - https://bit.ly/2q8VWl1 AngularJS - https://bit.ly/2qebsLu Python - https://bit.ly/2Eq0VSt C- https://bit.ly/2HfZ6L8 Android - https://bit.ly/2qaRSAS Linux - https://bit.ly/2IwOuqz AWS Certified Solutions Architect - https://bit.ly/2JrGoAF Modern React with Redux - https://bit.ly/2H6wDtA MySQL - https://bit.ly/2qcF63Z ----------------------Follow--------------------------------------------- My Website - http://www.codebind.com My Blog - https://goo.gl/Nd2pFn My Facebook Page - https://goo.gl/eLp2cQ Google+ - https://goo.gl/lvC5FX Twitter - https://twitter.com/ProgrammingKnow Pinterest - https://goo.gl/kCInUp Text Case Converter - https://goo.gl/pVpcwL -------------------------Stuff I use to make videos ------------------- Stuff I use to make videos Windows notebook – http://amzn.to/2zcXPyF Apple MacBook Pro – http://amzn.to/2BTJBZ7 Ubuntu notebook - https://amzn.to/2GE4giY Desktop - http://amzn.to/2zct252 Microphone – http://amzn.to/2zcYbW1 notebook mouse – http://amzn.to/2BVs4Q3 ------------------Facebook Links ---------------------------------------- http://fb.me/ProgrammingKnowledgeLearning/ http://fb.me/AndroidTutorialsForBeginners http://fb.me/Programmingknowledge http://fb.me/CppProgrammingLanguage http://fb.me/JavaTutorialsAndCode http://fb.me/SQLiteTutorial http://fb.me/UbuntuLinuxTutorials http://fb.me/EasyOnlineConverter
Views: 75692 ProgrammingKnowledge
Qt Training: Fundamentals of Qt - Objects in Qt, part 3/3 - Sometimes signals are not enough
 
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Fundamentals of Qt - Objects in Qt, part 3/3 - Sometimes signals are not enough... 2010 Presented by: Mirko Boehm Agenda and learning objectives: How does Qt process events? Event handling in your application Events demo - using events to intercept closing application windows Events and signals compared
Views: 7371 Qt
C++ Qt 62 - Viewer Feedback Signals and Slots in depth
 
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These videos are a bit outdated - I am in the process of replacing these with courses on Udemy.com Below are links for the courses I have finished so far. (I will be making much much more) Qt Core Beginners https://www.udemy.com/qt-core-for-beginners/?couponCode=YOUTUBE100K QT Core Intermediate https://www.udemy.com/qt-core-intermediate/?couponCode=YOUTUBE100K
Views: 32107 VoidRealms
When "Key" Pressed - QT
 
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Video Created By Dr. Sherif Khattab
Views: 13282 Mohammad Shaker
PyQt5 Lesson 5 Signals and Slots
 
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This video introduces signals and slots so that we can now respond to events. It also wraps up our window in a class. Here is the code for the tutorial: https://gist.github.com/anonymous/0497a5abdef722f65a10b068e1dfcb2e
Views: 24272 Mark Winfield
Daniel Eriksson / Johan Thelin: Getting Qt's signal/slot mechanism in standard C++
 
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Abstract: A fundamental property of the Qt framework is the so called signals and slot mechanism. It is a generic event mechanism which is easy to use. By providing an interface of provided events (signals) and required handlers (slots) where a signal needs to be connected it is easy to connect objects with each other without specifying explicit dependencies. This event mechanism also works between objects in different threads. However, the Qt signal and slot mechanism is dependent on meta information which is generated by the so called MOC, the Meta Object Compiler. For this to work the signals and slots keywords are added to C++. This makes a Qt program that uses signals and slots impossible to compile without the MoC and the Qt super object QObject. So is there anyway to get this signal and slots mechanism using standard C++? We are going to present how Qt and QObject works and describe the implementation of signal and slots mechanism and compare that to two libraries from boos called Signals2 and Synapse that provides the same thing but based on standard C++.
Views: 261 SwedenCpp
PyQt4 (Python GUI) 2: Events And Signals
 
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For this tutorial, we will go over the basics of PyQt4. PyQt4 is a Python wrapper around the GUI (Graphical User Interface) software, Qt. This tutorial will cover how to make a basics of source, signals and objects and use the example to create a functioning button. IPython Notebook: https://github.com/snazrul1/PyRevolution/blob/master/PyQt4/Events%20and%20Signals.ipynb Author: Syed (Sadat) Nazrul
Views: 4356 PyRevolution
7   PyQt5 Signal And Slots Basics Pyhton GUI Programming
 
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Source Code https://teachyourselve.blogspot.com/2018/07/signal-and-slots-basics-in-pyqt5.html PyQt5 Signal And Slots Basics Pyhton GUI Programming Graphical applications (GUI) are event-driven, unlike console or terminal applications. A users action like clicks a button or selecting an item in a list is called an event. If an event takes place, each PyQt5 widget can emit a signal. A signal does not execute any action, that is done by a slot.
Views: 5840 Parwiz Forogh
5   PyQt5 Signal And Slots Structuring Window In A Class
 
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PyQt5 Fifth Lesson, Signal And Slots Structuring our Window In A Class
Views: 1022 Parwiz Forogh
Qt Designer Signals & Slots Overview
 
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Learn More About This Course From Here : https://www.udemy.com/python-desktop-application-development-with-qt/?couponCode=pyqt
Views: 1101 EgyCoder
Уроки С++. Qt Widgets - QEventFilter. QEvent - перехват событий главного окна.
 
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http://github.com/cCppProsto/cpp/tree/master/qtWidgets/MainWindowQtEventFilter Qt Widgets - QEventFilter. QEvent - перехват событий главного окна. --------------------------------------------------------------------------------------------- Первая программа. Знакомство(http://youtu.be/BfVSHnRP_Ew) QEventFilter. QEvent(http://youtu.be/0Mu7yTtGTX8) OpenGL(http://youtu.be/0v76la6HyBQ) Как написать простую игру. Сокобан(http://youtu.be/VdoPqz8hZEk) Графика в QT. Анимация. Спрайты(http://youtu.be/f_JrwnyF5IA) Графика в QT. Перетаскивание объекта(http://youtu.be/duDfSjnGKVs) YouTube Data API v3(http://youtu.be/Wtkz28DYI4Y) ----------------------------------- Партнеры ---------------------------------------- GE8 - http://ge8.ru/ --------------------------------------------------------------------------------------------- Список видеороликов по темам(http://cppprosto.blogspot.com/2017/09/blog-post_23.html) http://www.facebook.com/groups/cCppProsto/ http://www.facebook.com/cCppProsto/ http://vk.com/ccppprosto --------------------------------------------------------------------------------------------- Если Вам помогают мои видеоуроки в обучении и не только, Вы можете помочь в развитии канала. Карта Привата - 5168 7551 0015 7334 WebMoney U414102680921 X242714437759 R102195420903 Z268136237411 Большое спасибо за помощь. --------------------------------------------------------------------------------------------- #QTWidgets #Qt #QtProsto #Widgets #языкСи #языкСиПлюсПлюс #выучитьПрограммирование #видеоурокиПрограммирование #основыПрограммирования #урокиПоПрограммированию #CppProsto #обучениеПрограммированию #ЯрославОлешко #ОлешкоЯрослав ---------------------------------------------------------------------------------------------
Views: 521 cppProsto
QT Tutorial தமிழ் 10: How to use SIGNAL and SLOT in QT
 
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SIGNAL and SLOT in QT: *How to use SIGNAL and SLOT in QT *How to create Signal and Slot in GUI *How to use Connect function *How to create signal and Slot in Program ***************************************** 1.QT Tutorial1 : How to use label :https://youtu.be/kh4l-cv1M4Y 2.QT Tutorial 2 :HOw to use PushButton and print text to label in run time:https://youtu.be/dbjlmXV0KT0 3.QT Tutorial 3: How to use LineEdit and qDebug in Tamil : https://youtu.be/f5W6ILbpAY8 4.QT Tutorial 4: How to use QMessageBox in Tamil :https://youtu.be/AqpzcAUb-_0 5.QT Tutorial 6: How to use QReadio Button in Tamil:https://youtu.be/posp9tY1bPA 6.QT Tutorial 7: How to use Check Box in Tamil:https://youtu.be/7le-5HRG5CU
Views: 185 Engineering Factory
QtDD13 - Olivier Goffart - Signals and Slots in Qt 5
 
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Recorded at the Qt Developer Days in Berlin in 2013. Slides available at https://devdays.kdab.com/?page_id=225 Short Abstract: Signals and Slot is one of the Qt's key concept. Qt 5 introduce a new connection syntax, which allows compile time checking, smart type conversion, connection to lambdas, and more. In this talk, we will compare the old and the new syntax, see how to use it and what is possible, including tips and pitfalls. We will also go a bit under the hood and look a bit of the implementations of signals and slots which should help you to understand them even better. Abstract: One of Qt's main particularity are the signals and slots. They enabled from the beginning making easy user interface and are probably a key to Qt's success. They still play a big role in QML. Qt5 which was just released less than a year ago, introduces a new syntax for connecting your signals and slot. Instead of using the SIGNAL and SLOT macro, you can use pointer to member functions. This has numerous advantages such as compile time checking of the validity of the connection, and automatic conversion of types regardless of typedefs or namespaces, or to be able to connect to lambda expressions. This talk will introduce this new syntax in details, with examples of what you can do and common mistakes to avoid. We will also go over some implementation detail and design decision behind it. It is much easier to understand and use efficiently. Presenter Biography: Olivier Goffart started working with Qt 10 years ago with his involvement in KDE. He was then hired by Trolltech to work on Qt in 2007. He has been working on various areas of Qt including the itemview framework, the widget stylesheets, QtScript, the QObject internals, and the QML debugger for Creator. He is now the co-founder of Woboq, a company based in Berlin focussing on Qt.
Views: 8080 Qt
C++ Qt 74 - QPainter and QPen
 
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These videos are a bit outdated - I am in the process of replacing these with courses on Udemy.com Below are links for the courses I have finished so far. (I will be making much much more) Qt Core Beginners https://www.udemy.com/qt-core-for-beginners/?couponCode=YOUTUBE100K QT Core Intermediate https://www.udemy.com/qt-core-intermediate/?couponCode=YOUTUBE100K learn how to drawn on the screen with QPainter and QPen
Views: 72905 VoidRealms
Tutorial Qt Creator - QMouseEvent
 
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Ofrezco mis servicios como desarrollador de software. Hago software a la necesidad del cliente. Contacto: [email protected]
C++ Qt 60 - Whats this help with installable event filters
 
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These videos are a bit outdated - I am in the process of replacing these with courses on Udemy.com Below are links for the courses I have finished so far. (I will be making much much more) Qt Core Beginners https://www.udemy.com/qt-core-for-beginners/?couponCode=YOUTUBE100K QT Core Intermediate https://www.udemy.com/qt-core-intermediate/?couponCode=YOUTUBE100K
Views: 23497 VoidRealms
QT - Subclassing QLabel / Adding QMouseEvents
 
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Hi. In this video I'd like to show you how to subclass QLabel to get for example cursor position,right & left click or draw a region of interest(ROI).
Views: 6635 DoctorExplicit
QT C++ GUI Tutorial 21-  Display selected row from QTableView to QlineEdit
 
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Moving Datarow from QTableView to QlineEdites‎ Passing data from selected row in Q Table View to QT C++ GUI - how to load selected data from database and display in QlineEdit How to show table column data in a QlineEdit‎ textbox QT C++ GUI - Getting data from selected QTableView row and which event How to retrive data from table to QlineEdit by selecting one row QTableView selected row data to QlineEdit in QT C++ GUI .net how to retrieve data and display in QlineEdit in QT C++ GUI Passing table values(data) to QlineEdit fields how to get selected row values from a table control
Views: 35253 ProgrammingKnowledge
Multithreading with Qt - Giuseppe D’Angelo
 
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This talk introduces you to the fundamentals of threading in Qt. We will discuss how threads, QObjects and events interact together; how a thread affinity of a QObject has a play in signals and slots connections; and how you can leverage the modern C++11 threading capabilities in your Qt application. More info and slides at https://www.kdab.com/multithreading-with-qt/
Views: 3566 KDAB
Tutorial Qt Creator - QKeyEvent
 
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Ofrezco mis servicios como desarrollador de software. Hago software a la necesidad del cliente. Contacto: [email protected]
Qt2:初探信号与槽,SIGNAL and SLOT
 
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第二节: 1、初探信号与槽,SIGNAL and SLOT。(小程序quit) 2、窗口部件的布局。(小程序SpinboxAndSlider) Qt的布局方式: QHboxLayout:水平布局 QVBoxLayout:垂直布局 QGridLayout:方格布局 3、学会使用Qt Assistant。 Qt、C++学习交流群:302558294 我的CSDN博客:http://blog.csdn.net/rl529014 (希望大家能够提出我的不足,我会在后面的视频教程中做出改进)
Views: 825 hsp hero
26 | С++ | Библиотека Qt | Сигналы и слоты | часть 1 | Денис Кириенко | Фоксфорд
 
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Тема лекции: Библиотека Qt. Сигналы и слоты. (часть 1) Понравился ролик? Подпишись! https://goo.gl/L2AHY1 Мой канал на YouTube http://youtube.com/VladimirKirienko?sub_confirmation=1 Все видео курса: https://goo.gl/E9XS6i Автор (режиссер): К.Д. Павлович Преподаватель курса: Кириенко Денис Павлович — Преподаватель информатики школы № 179 г. Москвы — Автор курса программирования на языке Python — 10 лет педагогического стажа — Член оргкомитета и жюри олимпиад по информатике Производство: Россия / Фоксфорд Жанр: Программирование, C++ Программа курса: 12 часов • Основные алгоритмические конструкции (условия, циклы) • Функции. Рекурсия • Ввод-вывод данных. Работа с файлами • Средства разработки и отладки программ Типы данных и работа с памятью 12 часов • Целочисленные типы данных и операции с целыми числами • Представление целых чисел. Битовые операции. Дополнительный код • Действительные типы данных. Представление действительных чисел. Особенности работы с действительными числами • Массивы • Строки в языке C • Указатели. Динамическое распределение памяти Язык программирования C++ 18 часов • Отличия языка программирования C++ от C • Ввод-вывод в языке C++ • Строки в языке C++ • Объектно-ориентированное программирование. Парадигмы объектно-ориентированного программирования (наследование, инкапсуляция, полиморфизм) • Разработка классов • Обобщённое программирование. Шаблоны в языке C++ • Стандарты языка C++. Нововведения стандартов C++11 и C++17 Стандартная библиотека шаблонов STL 6 часов • Контейнеры pair, vector, stack, queue, deque • Контейнеры set, map, multiset, multimap • Стандартные алгоритмы библиотеки STL (сортировка, поиск и прочее) Разработка графических приложений с использованием библиотеки Qt 12 часов • Разработка приложения на базе QMainWindow • Слоты и сигналы. Связь слотов и сигналов • Различные элементы управления (кнопки, поля ввода, слайдеры) • Создание новых виджетов. Обработка событий PaintEvent • Обработка событий мыши https://cloud.mail.ru/public/EYGE/FGLQNGy8B задачи (1-16)
Python GUI Development with Qt - Events Explained - Video 5
 
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NEW PYTHON DEVELOPMENT COURSE! CLICK HERE === https://goo.gl/2Yxk7L === For more information and code download visit my blog @ http://pythonbo.com In this video I talk more about events (the SIGNAL and SLOT mechanism) in Qt. It is very important that you understand how events are handled in Qt since they function slightly differently than in some other widget toolkits such as the .NET one. Video 5: Events Explained
Views: 19408 PythonBo
Communication between processes with signal type events
 
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Signal events are used to send or receive signals within or outside the process. For this reason, they are useful for both communication between parts of the same process and between processes linked by a hierarchical relationship. In this video, we will examine the various types of signal events and their use with a step-by-step example.
Views: 59 GeneXus™
C++ Qt 15 - QPushButton
 
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These videos are a bit outdated - I am in the process of replacing these with courses on Udemy.com Below are links for the courses I have finished so far. (I will be making much much more) Qt Core Beginners https://www.udemy.com/qt-core-for-beginners/?couponCode=YOUTUBE100K QT Core Intermediate https://www.udemy.com/qt-core-intermediate/?couponCode=YOUTUBE100K
Views: 101899 VoidRealms
Python GUI Development with Qt - New Style Syntax for Signal and Slot Mechanism - Video 17
 
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NEW PYTHON DEVELOPMENT COURSE! CLICK HERE === https://goo.gl/2Yxk7L === For more information and code download please visit http://pythonbo.com Video 17 - In the videos so far we've gotten pretty familiar with the Signal/Slot mechanism in Python Qt framework. Today we're introducing the so-called new syntax, which is much more pythonic and makes more sense
Views: 12686 PythonBo
Python GUI Development with Qt - QtDesigner's Signal-Slot Editor, Tab Order Management - Video 12
 
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NEW PYTHON DEVELOPMENT COURSE! CLICK HERE === https://goo.gl/2Yxk7L === For more information and code download please visit http://pythonbo.com Video 12 - We learn a bit more about Qt Designer and its abilities to handle Signals and Slots, as well as tab order.
Views: 26228 PythonBo
qt tutorial 026 events 02
 
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Auswertung von Mausevents
Views: 619 MrGraumich
Qt Mouse Event on QLabel
 
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In this video you can see how to subclass QLabel to implement Mouse Events. Enjoy!
Views: 46811 Saeed Ghiassy
C++ GUI with Qt Tutorial - 6 - Signals and Slots
 
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Facebook - https://www.facebook.com/TheNewBoston-464114846956315/ GitHub - https://github.com/buckyroberts Google+ - https://plus.google.com/+BuckyRoberts LinkedIn - https://www.linkedin.com/in/buckyroberts reddit - https://www.reddit.com/r/thenewboston/ Support - https://www.patreon.com/thenewboston thenewboston - https://thenewboston.com/ Twitter - https://twitter.com/bucky_roberts
Views: 99448 thenewboston
Qt Creator Signals and Slots
 
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This video describes how to connect the widgets directly in the UI file using Signals and Slots.
Views: 3662 Amey Patil
Signals and slots in C++ Don't use libraries, implement it by yourself
 
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Don't use libraries, implement it by your self.
Views: 1719 Mika
Qt : Send UDP command from keyboard event
 
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Qt : Send UDP command from keyboard event http://www.appstack.cc
Views: 554 AppStack
8  PyQt5 Signal And Slots Basics Part 2 Pyhton GUI Programming
 
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Source Code https://teachyourselve.blogspot.com/2018/07/signal-and-slots-basics-in-pyqt5.html PyQt5 signals and slots Graphical applications (GUI) are event-driven, unlike console or terminal applications. A users action like clicks a button or selecting an item in a list is called an event. If an event takes place, each PyQt5 widget can emit a signal. A signal does not execute any action, that is done by a slot.
Views: 3660 Parwiz Forogh
qt tutorial 025 events 01
 
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Erstes Beispiel für das Benutzen von Events. Hier speziell das Close-Event.
Views: 1472 MrGraumich
QtWS15- Reactive programming and Qt, Ivan Cukic, KDE
 
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Qt World Summit 2015, OCTOBER 5-7, BERLIN, GERMANY Reactive programming and Qt: Reactive programming is an emerging discipline which achieves concurrency using events-based programming. Today, It is mostly used for writing very scalable web services that can achieve high concurrency levels even on a single thread. The concept is simple - make a system that is fully event-based, and look at events not as isolated instances, but as streams. When we have streams, we can manipulate them as if they were simple ranges. We can filter them, modify them, combine multiple streams into one etc. Reactive programming is not only applicable to the web services, it can be used in any event-based environment. In our case, in normal Qt applications, to enrich the power of signals and slots. The talk will consist of two parts. In the first part, ranges will be explained (through the boost.range library, and Eric Niebler's range library proposal for C++17). We will show that ranges, and range transformations are a natural extension to the library in STL, which allows writing more concise and safe code that deals with collection structures like lists, vectors or maps. The second part will deal with what reactive streams are, and their relation to ranges. We will show how to create streams using Qt's signals and slots mechanism, how to manipulate them, and connect the transformed streams back to the UI or other application components. We will show a multitude of examples of how this can make the code more composable, clean and more declarative. The examples will require some prior C++11/14 knowledge, while the features needed from the forthcoming C++17 standard will be explained.
Views: 3667 Qt
Signals and Slots
 
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Website: http://www.copperspice.com Downloads: http://download.copperspice.com Github: http://github.com/copperspice Discussion: http://forum.copperspice.com
Views: 611 CopperSpice
PyQt5 - Qml tutorial - Recieving Mouse Events and Actions
 
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Lets study now how to use qt quick's mouseArea to receive beautiful signals from the mouse and use them in our application. Documentation at: doc.qt.io source at: https://github.com/amoh-godwin/Python-PyQt5-Qml-Tutotial/
Views: 584 Godwin Amoh - Gyebi
PySide + PyQt | QPushButton + Signals in 3 Minutes
 
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Learn how to create simple, toggle, flat and pop-up buttons as well as connecting them to signals when the user clicks them. This common Qt widget will be a staple in your tool kit. ============================= ➤ FULL Transcript + Excercises: https://impatientprogrammer.net/2018/07/27/pyside-pyqt-qpushbutton-signals-in-3-minutes/ ➤ Tool Development Series! http://bit.ly/2AXxmHB ➤ Qt.Py file (needed to run code!): https://github.com/mottosso/Qt.py ➤ Impatient Programmer: https://www.ImpatientProgrammer.net ➤ Exercises: https://www.HackerRank.com --- FOLLOW ME! --- ☁ http://www.facebook.com/TPayneExperience ☁ http://www.twitter.com/TPayneXperience ☁ http://www.instagram.com/TPayneExperience ☁ https://www.patreon.com/TPayneExperience ☁ https://www.HackerRank.com/TPayneExperience ============================= PLAYLISTS: ➤ Impatient PySide / PyQt XXX ➤ Impatient Python https://www.youtube.com/watch?v=YHniMnZIlzg&index=1&t=0s&list=PL82YdDfxhWsBniewPu1uVNtIyWK7bleIq ➤ Let's Learn C++: INTERMEDIATE https://www.youtube.com/playlist?list=PL82YdDfxhWsCyZLsg_kXhH8sy5ixQNras ➤ Let's Learn C++: BASICS https://www.youtube.com/playlist?list=PL82YdDfxhWsCyZLsg_kXhH8sy5ixQNras ➤ Let's Learn PYTHON: BASICS https://www.youtube.com/playlist?list=PL82YdDfxhWsDJTq5f0Ae7M7yGcA26wevJ ➤ Let's Learn PYTHON: OOP https://www.youtube.com/playlist?list=PL82YdDfxhWsAyY3iNNDC1kUKWAJibUGi6 ============================= Music by Juto: justin-totten.com http://soundcloud.com/juto ======================================= New Episode (nearly) Every Friday ============================= ☁♡ Keep the Dream Alive! ♡☁ My comments and words are my own and do not represent the views or opinions of my employer in anyway.
Views: 712 Trevor Payne
Python GUI Development with Qt - More Signals - Video 6
 
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NEW PYTHON DEVELOPMENT COURSE! CLICK HERE === https://goo.gl/2Yxk7L === For more information and code download visit my blog @ http://pythonbo.com In this video I talk more about how to emit your own signals with your own re-defined QWidgets. Video 6 - More Signals
Views: 16433 PythonBo
уроки по Qt. 2 урок. Сигналы и слоты + QDialog
 
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Начинаем разбирать обработку событий в QT
Views: 111443 Denis Markov
KeyPressEvent in Qt5
 
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This video show you how to handle key press event in Qt 5.4
Qt уроки #8. Рисование мышью в Qt
 
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Программный код урока доступен также в статье по следующей ссылке: https://evileg.com/ru/post/84/ В данном видео продемонстрирован пример рисования мышью на графической сцене в Qt. А также даны комментарии к программному коду урока. Qt Уроки: https://evileg.com/ru/knowledge/qt/ PyQt5 Уроки: https://evileg.com/ru/knowledge/PyQt5/ Django Уроки: https://evileg.com/ru/knowledge/django/ QML Уроки: https://evileg.com/ru/knowledge/QML/
Views: 4005 Evgenii Legotckoi
Thiago Macieira: Qt event loop, networking and I/O API
 
01:26:46
The Qt framework started with humble origins in the early 1990s with a simple mission: provide a cross-platform API for making graphical applications (at the time, it implied desktop and workstations). Since then, it has grown well beyond those goals. More than just a GUI toolkit today, Qt provides support for many other subsystems like database access, integration with Web technologies, and a powerful asynchronous I/O subsystem that includes networking. This talk is a tutorial in the form of a presentation in the Qt I/O and networking classes. All of Qt's asynchronous mechanisms rely upon a central event-handling loop, called event loop or main loop. Building on that, Qt provides asynchronous I/O support for running child processes, accepting TCP connections, making outgoing TCP connections, and handling TCP and UDP I/O, among other tasks. Finally, on an even higher level, it provides powerful support for HTTP and FTP downloads and uploads. This talk will present all of those subsystems, will explain how to use them in applications, along with examples, and will discuss how they're implemented. It is targetted both to application developers as well as developers of other libraries seeking to understand the solutions that Qt uses.
Views: 2247 BoostCon
QtDD13 - Frederik Gladhorn - QtQuick and Input Events (Touch, Mouse, Keyboard)
 
01:07:06
Recorded at the Qt Developer Days in Berlin in 2013. Slides available at https://devdays.kdab.com/?page_id=225 Short Abstract: An in depth view on how touch and mouse input handling works in Qt Quick 2. Qt Quick 2 provides several components to handle input, but so far there are several tricky issues when combining them. In this talk you will get an overview of how the event comming from the platform ends up at you Qt Quick Item. With this background it will be clear how to get the best out of MouseArea, Flickable, MultiPointTouchArea and PinchArea when it comes to being ""touched"". Abstract: Usually handling input events in Qt Quick just works. But there are some tricky situations when combinging the different event handling items. Imagine a photo viewer, a Flickable to scroll the image, a PinchArea to zoom and a MouseArea to handle double-tapping to zoom back to the initial size. How does Qt Quick process events, when and how are they propagated and when does the combination of these elements stop working together? What needs to be taken into account when writing a custom item handling input from mouse or touch devices? In this talk we'll look at input events in Qt Quick. Another interesting area is keyboard handling and we'll take a short look at how it works as well, taking the concept of focus and active focus into consideration, since these topics can be a real headache to the unsuspecting developer. Presenter Biography: Frederik Gladhorn is working at Digia on Qt. Amongst other things he focuses on making Qt accessibility a top-notch offering. He's been part of the Qt and KDE community for many years.
Views: 4530 Qt
How to attach an event to a handler in Python | Pluralsight
 
07:00
Python Desktop Application Development | http://www.pluralsight.com/courses/python-desktop-application-development In this video excerpt, developer Bo Milanovich, uses Python to attach an event handler and tests it. This course demonstrates how you can easily create desktop applications using the simplicity of Python and the power of Qt. Visit us at: Facebook: https://www.facebook.com/pluralsight Twitter: https://twitter.com/pluralsight Google+: https://plus.google.com/+pluralsight LinkedIn: https://www.linkedin.com/company/pluralsight Instagram: http://instagram.com/pluralsight Blog: http://blog.pluralsight.com/ 3,500 courses unlimited and online. Start your 10-day FREE trial now: https://www.pluralsight.com/a/subscribe/step1?isTrial=True Python Desktop Application | Pluralsight -~-~~-~~~-~~-~- Push your limits. Expand your potential. Smarter than yesterday- https://www.youtube.com/watch?v=k2s77i9zTek -~-~~-~~~-~~-~-
Views: 3943 Pluralsight
QT connect signal to slot
 
07:26
create a signal and connect it to a slot
Views: 5287 Dave Burchill
Event Loop
 
05:45
For more info see http://bobueland.com/cocos2d/galaxyfighter/
Views: 5951 bobueland
PyQt5 @pyqtSlot ile Sinyal Slot Bağlantı Yapma
 
02:55
Python Qt GUI Design signal slot connection pyqtslot decorator PyQt5 ile Arayüz Tasarım sinyal slot bağlantı sı yapma: https://yapayzekalabs.blogspot.com/2018/09/pyqt5-ile-grafiksel-kullanc-arayuzu-gui.html
Views: 123 Yapay Zeka Labs