qt beaglebone

Because the QT Creator installation relies on the QT library, it is important to ensure that the QT5.5.1 is already installed. 1. Download the Creator3.6.0 resource file: Qt-creator-opensource-src-3.6.0.tar.gz Can be obtained at the following Web site: Http://download.qt.io/official_releases/qtcreator/3.6/3.6.0/qt-

Step 1: Refer to the installation of QT environment and QT Creator development tools under Ubuntu Input in terminal: sudo apt-get install qt4-dev-tools qt4-doc qt4-qtconfig Qt4-demos Qt4-designer Qt ASSISTANT,QT LINGUIST,QT Creator is included in the Qt4-dev-tools (seemingl

Watanabe White JadeLinks: http://www.zhihu.com/question/29030777/answer/59378712Source: KnowCopyright belongs to the author, please contact the author for authorization.Yes, very well, you can directly include someone else's source code, or call the library.I'll give you a couple of other libraries on GitHub:QASIOSOCKET:QT ASIO (package) replaces QT inefficient Qtcpserver:dushibaiyu/qasiosocket GitHubQLIB7Z:QT 7z SDK Package, decompression compression

The Qt drawing system allows the same API to be used to draw on screens and other printing devices. The entire drawing system QPainter is based on, QPainterDevice and QPaintEngine three classes.QPainterAn abstraction of a two-dimensional space, a two-dimensional space that QPaintDevice allows QPainter drawing on top of it, that is, QPainter the work space, and QPaintEngine provides a QPainter uniform interface for drawing brushes () on different devic

QT learning notes _ establish connections and qt learning notes A connection is called a connection, that is, the user's response to the program after clicking a button. This time, an exit button is written. // Establish a connection to respond to the event # include : Establish a connection between C ++ GUI and Qt, and connect signals and slots Void QSpinBox

I'm bored recently. I want to learn how to use mobile phone software. I don't need to say much about Android. Many people are using it. There are also a lot of Android Program Development tutorials. I have learned a lot about Java. Unfortunately, I am still using the mobile phone of the Symbian system. Therefore, I decided to build my own Symbian mobile phone software. Qt Nokia-related information, Baidu. I won't say much here. Go straight to the t

Recently, the TIFF format was only available in the project. I checked on the document: "tiff is an image file format. This image format is complex, stores a large amount of content, occupies a large storage space, and is three times the size of GIF images, it is 10 times the corresponding JPEG image ". See its definition: The label Image File Format (Tagged Image File Format, abbreviated as TIFF) is a file format mainly used to store images including photos and art maps. Label Image File Form

Qt implements cascading deletion of sqlite3 and qt implements sqlite31. there are two required tables: the barcode table and the product details table. The rfid in the barcode table is the rfid foreign key in the product table, you must delete the related entries in the product table to achieve cascading deletion of the bar code table. solve this problem by using the cascading deletion feature provided by s

C ++ memo-QT (4), Memo-qt User Logon-creator Programming Draw the following interface: During compilation, the following header file ui_main1_1_h is automatically generated /*************************************** **************************************** * ** Form generated from reading UI file 'mainwindow. Ui' ** ** Created by: Qt User Interface Compilervers

Today, we can use some QT tools to write command line programs. We can see a more general usage of QT.The content is very simple and the current date is output.The qdate class is used first. You can use the static method currentdate of the qdate class to obtain the current date.Second, the cout in the standard library cannot output the qstring type, so the qtextstream class is used for output. Common variables such as Endl and flush have been defined

Qt Event Filter and Qt Event Filter Sometimes, we need to restrict the functions of a widget. In this case, we can derive a new class and restrict the original functions in this new class. In some simple cases, this is not necessary. The event filtering function provided by Qt can also be used. Event Filtering intercepts all messages sent to an object in advance,

QT network programming: instant communication in the C/S architecture under Tcp, and qt Network Programming First, write a client, which is simple, can join the chat, and join the server interface. #ifndef TCPCLIENT_H#define TCPCLIENT_H#include There is a button to add to the server and a button to send messages. In the header file, two functions are defined first. # Include "tcpclient. h "# include Imple

JSON support in Qt QT5 begins with supporting the processing of JSON data, which is a data format for Interter data interchange. JSON is used to store structured data, and JSON has 6 basic data types: bool Double String Array Object Null All keys is strings, and an object cannot contain any duplicate keys.In a JSON object, all keys are strings and cannot contain duplicate strings. Entries in arrays a

QT window fade-out effect, window shake effect, mouse move window, qt fade-out // Window fading effectVoid MainWindow: closeWindowAnimation () // close the window effect {QPropertyAnimation * animation = new QPropertyAnimation (this, "windowOpacity"); animation-> setDuration (500 ); animation-> setStartValue (1); animation-> setEndValue (0); animation-> start (); connect (animation, QPropertyAnimation: fini

The QT library does not seem to have a complete cross-platform solution, and you may need to judge by your own platform.Windows can use OpenProcess to obtain relevant information using the methods mentioned above. Termination is simple:ShellExecute (0, "open", "TASKKILL", (Processname,null, sw_hide);Other platforms need to find a way to locate the PID of the process (such as invoking the system's PS command for filtering lookups),Linux opens/proc/pid/

Original works, allow reprint, please be sure to use hyperlinks in the form of the original source of the article, author information and this statement. Otherwise, the legal liability will be investigated. http://hongbin0720.blog.51cto.com/3305400/1231118 buttons, often interpreted as triggering an action request or command, are actions that interact with the user for instruction. The QT button series is divided into different definitions according t

Brief introductionQT is a cross-platform graphics Development Library, currently operated by QT Company, a wholly-owned subsidiary of Digia, official website:http://www.qt.io/You can also access the QT Project domain name: http://qt-project.org/QT itself supports many operating systems. From general operating system Li

Qt class inheritance graph, QT class inheritance For learning Qt, there is a QT all classes of inheritance chart, is very necessary. The following provides an inheritance diagram for all classes of Qt5.1. When you look at it, you can zoom in and out. If you want to download the document, you can join the last QQ lea

Speaking of Symbian development, we have to mention the depressing descriptor in Symbian. Symbian introduces a series of mechanisms to improve stability, and descriptors are also one of them. From tdesc to rbuf, from the 16-bit Unicode to the 8-bit UTF-8, the unclear relationship between the chaos not only makes the new Symbian headache, but also in the Symbian Master feel ashamed. Compared with Symbian descriptors, QT can be a big comfort for charac

system is started automatically automatic MySQL database server, the default options available, click " Next ":Figure 1-16confirm the installation is complete, check "Start MySQL Workbench after Setup" To test the successful installation, click "Finish": Figure 1-17Third, the installation is successful1, appeared Workbench GUI page,1-18, installation success:To compile the MySQL project steps:The next step is to open the MySQL project with Qt Creator