learn qt c

Qt -- change the Mouse shape, Qt -- the Mouse shape To change the shape of the mouse, it is useful when drawing the coordinate system. Please note: 1 this-> setMouseTracking (true); // set to trigger moveEvent 2 void mouseMoveEvent (QMouseEvent * event) 3 {4 QPoint mousepos = event () without pressing the mouse key () -> pos (); 5 6 // in coordinates (0 ~ Width, 0 ~ Height) changes the Mouse shape within th

, it can be used independently with Qtopia. The original Qtopia is divided into several layers. The core application framework and plug-in system are called Qtopia Platform. Upper-layer applications are divided into different packages according to different target users, such as Qtopai PDA, qtopia Phone. In addition to Qt and Framebuffer-based Qt/Embedded, Qt Des

this combination, customers can optimize performance and create scalable software for different usage types. Qt Charging Pile (EVSE) demo 7). Integrated Support Toradex Module Toradex and Qt teamed up to optimize QT on the Toradex module. This includes, for example, optimizing 2D rendering performance on low-power modules without a 3D GPU,Cold start time of 1.

1. Download and install QT Go to the QT website (http://trolltech.com/developer/downloads/qt overview, download qt-win-opensource-4.3.2-mingw.exe directly, install it. This version has integrated the compilation environment mingw (Note: Only the compiling environment does not include IDE, and eclipse is the real IDE).

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

Chapter 1 build the Qt development environment, Chapter 1 build the qt Development Chapter 1 build a Qt Development Environment 1.Ftp://ftp.qt-project.org/Download the source code package of Qt. I downloadedQt-everywhere-opensource-src-4.8.1.tar.gz. Qt Creator downloadsQt-cr

The previous article has confessed to compiling the QT custom version from the source code. Now you can start configuring the development and debugging program and write a Hello world.1. IDEAlthough QT has an official VS plugin that allows us to develop QT applications in VisualStudio, I feel that the experience is not very good, and I prefer to use the refreshin

Download eclipse-cpp-helios-sr1-win32.zip Download QT Download qt-eclipse-integration-win32-1.6.1.exe Write a batch file c: \ Program \ eclipse-cpp-helios-SR1-win32 \ eclipse \ CDT. BAT to start eclipseSet Path = % PATH %; C: \ QT \ 2010.05 \ mingw \ binSet LIBRARY_PATH = c: \ QT \ 2010.05 \ mingw \ LibSet c_incl

Qcustomplot-Ultra-compact QT drawing Controls 2016-10-22 16:03:25| Category: QT|Official website: http://www.qcustomplot.com/1.0:http://download.csdn.net/detail/czyt1988/5986701Download Lofter my photo book |Qcustomplot Super Ultra-small QT Drawing Control, very beautiful, very easy to use, only need to add a qcustomplot.h and qcustomplot.cpp can be used, far mor

First, briefToday, we introduce a simple window property--qt::wa_deleteonclose.After the normal window is created, we usually call the close () method to close the window, and here we look at the introduction to the Close () method in the Q helper. BOOL Qwidget::close ()Closes this widget. Returns true if the widget was closed; otherwise returns false. First it sends the widget a qcloseevent. The widget is hidden if it accepts the close e

Chapter 7 exploring the core mechanism of Qt-signal and slot, exploring qt Chapter 7 exploring the core mechanism of Qt-signal and slot Note: To use Qt's core mechanism signal and slot, you must declare the Q_OBJECT macro in the private data zone of the class, and then the moc compiler will be responsible for reading the macro for code conversion, so that the uni

Before writing the code, you need to set up the environment, for details, see: "Qt 5.4.2 Ubuntu Environment Building".a simple blank windowOpen terminal, new file through Vim first_qt.cpp, because QT code is C + + code, so the new file suffix is. cpp.The code reads as follows:#include after writing the code, we need to compile this code into an executable program through the g++ compiler (c + + compiler), b

QT under the static compile Qt, according to my experience, if according to the kind of windows under the Official SDK installed directly after the file to compile is not feasible, need to download QT source package directly, At present, the source of Nokia is called QT-EVERYWHERE-OPENSOURCE-SRC tar package, to the onl

In the subsequent content, I will not explain this term in QT for Embedded Linux for short. Note that, in any part of this series of articles, This term refers to QT for Embedded Linux, not QT for Windows CE or QT for Symbian. The applicable software versions are QT for Embe

Document directory I. Detailed Description Ii. Top-level attributes and child components Iv. Window flag ID 5. introduce several important member functions I. Detailed Description The qwidget class is the base class of all user interface objects. In general, basically all UI classes of QT are inherited by qwidget, while qwidget inherits from qobject,You can refer to QT source to find some subtle writi

Configuration and development environment of Qt memoirs and Development of qt memoirs It has been more than a year of development with Qt. The most common GUI development in Windows is MFC, WinForm, WPF, and Qt. MFC and Qt are based on C ++, while WinForm and WPF are general

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.

QT Development (19)--qt memory leak problem I. parent-child relationship between QT objectsQT The most basic and core classes are:Qobject,qobject has a list inside it, it saves children, and a pointer holds the parent, and when it's self-destructor, Will remove itself from the parent list and deconstruct all children.There can be parent-child relationships betw

Qt for iOS, mixed programming of Qt and Objective C, iosobjective Recently, some friends who use Qt asked about Qt for iOS, because I have little experience in this field and cannot write system articles. I am very sorry, I cannot give a satisfactory answer. I suggest you go to Jason's Home. There is also a link in th

application, it is highly recommended to copy the Gradle file to the Android directory , as in:In addition to the androidmanifest.xml and res/values/libs.xml files, the wizard also copies the following files: Project files required by Build.gradle-android Studio Gradlew[.bat]-Build scripts to build the Java section and create the final apk. gradle/wrapper/*-Build Script encapsulation file Build.gradle is very important and it can make it very convenient for you to add depe