foundations of qt development

　　Huaqing Vision Lecturer1, Host development environment description1) Linux for Huaqing Vision development Environment v12b (Ubuntu 12.04)2) host GCC version is gcc-4.6.33) Cross tool chain version is arm-none-linux-gnueabi-gcc-4.6.4Tool chain use needs to be unified, can switch the tool chain version according to the actual situation2, host QT

QT Development (54) ———QML Componentsa QML component is a complex, reusable combination of elements composed of basic elements. QML provides a number of ways to create components. the file-based component will The QML element is placed in a separate file, then a name is given to the file, and the component can be used by name. If you have a file named cell.qml, you can use the Cell {...} in QML. Form. The f

People who may learn QT generally feel that QT's IDE development environment is relatively small and hard to find. In fact, the IDE environment is scarce for Linux development.Here I recommend several good ides:1. kdevelop 3.5, a well-established integrated development environment, supports qt42, monkey studio, http://www.monkeystudio.org/3, edyuk, http://sourcef

Atitit. Software Development GUI Layout Management Pros and cons summary java swing WPF Web HTML C + + qt php ASP. WinForm1. Absoluti Layout (common) 12. Flow layout (not used) 13. BorderLayout (not used) 14. BoxLayout ( HTML default layout) 25. CardLayout (tab layout) 26. GridLayout 37. GridBagLayout 38. Fixed positioning (not used) 31. Absolutilayout (Common)to set the div Property to Absoluti in Htmldefa

Atitit. Software Development GUI Layout Management Pros and cons summary java swing WPF Web HTML C + + qt php ASP. WinForm1. Inheritance structure of layouts 12. Absoluti Layout (common) 13. Dock, Anchor layout //springlayout (Common ) 24. Flow layout (not used) 25. BorderLayout (not used) 26. BoxLayout ( HTML default layout) 37. CardLayout (tab layout) 48. GridLayout ( not used ) 49. GridBagLayout ( not us

This problem has been bothering me for 2 years, the tutorials I found earlier are MFC, the ATL Import Wizard, or the way to invoke the control by importing a type library, I have never understood.After learning ACTIVEQT recently and controlling Excel, Word, PowerPoint, and flash through ACTIVEQT, I finally got to the general understanding.After a few hours of trying, finally successfully through the QT operation SolidWorks. Suggest you can go to Baidu

Recent projects use embedded Linux system development. The development environment is set up in Ubuntu 12.04. This version of Lubuntu has advantages but also has many disadvantages. We do not recommend that you use a development environment for new users. The compilation of the entire embedded Qt 4.8.4 is also relative

tcptest:monobehaviour{string editstring= "Hello wolrd";//edit box Word gameobject cube; Tcpclienthandler tcpClient; Use the this for initialization void Start () {//Initialize network connection//tcpclient=new Tcpclienthandler ();//Because the class relay for TCP Monobehaviour so you can not use new, or remove the inheritance of Monobehaviour to use the new tcpclient=gameobject.addcomponentTestThe program realizes the service side and the client send and receive messages to each other, th

The tool itself was developed by QT, supported by Windows and Linux, and open source, and believed to be available on other platforms.I tried it, although there was no drop-down hint like Qt creator, but it was grammatically correct. Have the ability to modify the source code, so that it with the prompt function, convenient for the vast number of developers.Its homepage in sourceforget:http://sourceforge.ne

UbuntuInstallQtThe simple implementation of the development environment is the content to be introduced in this article. The content is very short, taking its essence for details.QtClass Library description, first look at the content. I. Install Qt in Ubuntu 1. $ sudo apt-Get install qt4-dev-tools qt4-doc qt4-qtconfig qt4-demos qt4-designer Note: The qt4-dev-tools contains tools such as

QT Mobile Application Development (IV): applying particle effectsThe previous article describes how QT quick supports frame animations. The realization of frame animation is inseparable from state machine, while state machine, animation and state switch (transitions) are the core content of QT framework, which means th

1. Unzip the mingw-gcc440_1.zip. Copy the extracted folder to the C packing directory.2. Install the qt-creator-win-opensource-2.5.2.3. Install the QT-WIN-OPENSOURCE-4.7.3-MINGW. Do not change the default installation directory.4. Open QT Creator, menu----build and run (left column)--click on "Manual Settings", click the Add button in the right column, select "Mi

on the interface (the slot function must correspond to the signal)private slots: void input(); void output(); void quit();　　　　 4. Usage of qfile in QT Main reference: http://blog.csdn.net/xgbing/article/details/7772953 Qstring filename = qfiledialog: getsavefilename (this, STR, "savefile.txt", TR ("*. TXT "); // select the path qfile F (filename); STR = qstring: fromlocal8bit (" export file... "); qtextstream txtoutput ( F);

Configure QT5.2.0-Android: Develop software in Windows 7 ~ You don't need to use eclipse to develop android software. After configuration, you can write C ++ code and run the APP on your Android phone! Software Configuration: ensure that you only have one Qt on your computer. If you have installed other versions of Qt on your computer, uninstall the tape, it is important to uninstall all components, and to

The window is a bit unclear. First, we start with the Qt Creator wizard, So create a project, Application, and Qt Quick Application. Qt Quick Component Set select Qt Quick 2.0 After step by step, we can see hello world In this way, there are several problems. Question 1: main. cpp #include #include"qtquick2applicationv

Date: 2016-05-25Recently found a problem in the development process, using two development boards for can network communication, according to experience, the speed of communication should be very fast, the project will be the interface timeout time set to 100ms, in a certain situation, in a short period of time to send multiple requests, such as continuous click multiple buttons, Each click to send the can

First, Description:In the actual project, the main use of QT development CS Program, of course, mainly the client. The company project has this demand is the real-time display of multiple equipment flow graph, the device will send traffic information to the server, the service end of the information through the socket to the QT client,

After six months of study and debugging, I finally wrote a simple GIS. On the ARM development board, I chose QT/Embedded 2.3.7 as the graphic development interface. I debugged the touch screen yesterday, finally, a little result is coming out. I'm very happy. I just published a message to celebrate it. Many people ask me for code reference, but because it is a

First, the signal slot mechanism principle1. How to declare a signal slotA simplified version of the QT header file:Class Example:public Qobject {q_objectsignals:void customsignal (); void customsignal (int i) public slots:void CustomSlot (); void Customslot (int i);};2. Macro and MoC Source objectExcerpt code:Qobjectdefs.hi. ... Ii. #define SLOTSIII. #define SIGNALS PUBLICIV. Emitvi. V. #define. ...Why do we need MOC?Since C + + native does not provi

Compilation environment and development process There are two kinds of IDE that can be used to develop QT, one is to use the VS + qt plugin, the other is to use the Qtcreator tool. The former is Microsoft's tools, with more easy to use, the disadvantage is that the signal slot support is not very good, need to hand-written, not automatically generated, there may