qt5 book

QT5 qtcreator Add qwt drawing pluginOne. Download QWT:QWT is a third party open source Chart library that follows the LGPL protocol. Download Address: http://qwt.sourceforge.net/, I downloaded the version is Download qwt-6.1.0.tar.bz2 (3.5 MB); 6.1.0 supports QT 4.8 and QT 5 versions. Tar xvf qwt-6.1.0.tar.bz2 get qwt-6.1.0 folder. Two. Compile and install: Follow steps qmake---> Make---> Make install 1) qmake: Check qmake version: Qwt-6.1.0-> qmak

label: style blog color ar use SP file Div on ///If you use the C function to open a file, even if you use a non-qt5 library string///Tolocal8bit or toutf16 to convert narrow characters and wide characters///Qt5 is utf8 internally to process all the Chinese directories obtained through qt5 itself is the UTF-8 format///The QT System can recognize but non-QT librar

Recently, on the application interface based on the QT5 platform, I want to implement the local selection file and copy the file to the specified path. Find the following article reference, refer to the writing of several functions to achieve the desired function, so record, convenient to find references later. I define several variables in the header file: Qfiledialog *mfiledlg;QString Mfilename;Qlineedit *mfilepath; The code in the. CPP implementati

This article outlines:This article has documented how to build vs2013+qt5+vsqtaddin+cmake working environment. If you encounter problems in the construction process can not be resolved to contact the author csdn-[email protected]The article is divided into several parts, 1. Contrast 2. Download and install section 3 configuration 4. CMake + qt 5 notation and example downloadComparison of Cmake+vs and Qtcreator development:Engineering is basically invo

In my Blog "Win7 under the QT5 installation and use" explained the Win7 under the Qt5+mingw installation and use, this section explains Win7 under qt5+vs2010 installation and use. The trouble with using QT5+MINGW to develop applications is that each time you write a . Pro file (project configuration file, similar to ma

project:Open our Qtdesigner and we can write the layout.When the designer program is started, we can drag the control.We create window programs, select Man Window , and let click After create .createwhen clicked, the canvas and controls appearDrag a text-write-point content:Save the layout file.Select Save Path At this point, you can see this file under the project.But this file python does not run directly ah, what to do?Another tool we have configured above is needed at this point PyUIC .Sele

images in QT programs. QT 3D adds 3D content rendering to Qt Quick. Qt 3D provides QML and C + + two sets of APIs for developing 3D programs. Qt bluetooth, which provides C + + and QML APIs for accessing Bluetooth wireless devices. Qt Contacts, which is used to access the C + + and QML APIs of the Address Book or contact database. Qt Concurrent, which encapsulates the class library of the underlying threading technology, facilitates the develop

into the DECODEIMAGEQML function, this sentence QGraphicsObject *item = qobject_castFailed, item is null, no conversion succeeded.Find information on the Internet to find that it is possible to run the following versions of QT5. Then see QT5 start QML the backend implementation is different. Then I looked at Qt5 's document and found that item in QML was an i

Before Qt5.3, I released the solution to solve QT5 creator cannot switch input method (FCITX), can not enter the problem of Chinese characters, Qt5.4 and Qt5.5, the old method fails because Qt5.4 is no longer binary compatible with previous QT5 versions, libfcitxplatforminputcontextplugin.so needs to compile the latest fcitx-qt5, See FCITX-

After inspection, it is missing the bag of FCITX-QT. For example, the QT5 program requires a package called FCITX-LIBS-QT5.If you cannot use the FCITX-based Chinese input method under the QT-based program, check that the following packages are installed:1 sudo apt-get install fcitx-frontend-qt4 fcitx-frontend-qt5 fcitx-libs-qt fcitx-libs-

One: Perform an upgrade on the Raspberry Pi: 1 : Updating the software source $ sudo apt-get update 2 : Replace the old package $ sudo apt-getupgrade 3 : Perform a Raspberry Pi firmware upgrade: 1, Raspberry Pi firmware: Can be understood as the Raspberry Pi bios, boot programs and the like, this part of Bo Tong not open source, to the Raspberry Pi added new features mainly through the firmware to achieve. 2, Raspbian system kernel: That is, the Linux kernel, this part is completely open sour

Ubuntu cannot switch the Chinese fcitx Input Method in qt5 programs such as wps-office. qt5fcitx After checking, the fcitx-qt package is missing. For example, the qt5 program, the need for a fcitx-libs-qt5 package. If you cannot use the fcitx-based Chinese Input Method in a qt-based program, check whether the following package is installed: 1 sudo apt-get in

Because the support of QT5 to QML has been greatly improved, so it intends to transplant the original QT4-based program to QT5, in the transplant with QFTP class written program dumbfounded!Qt5 removed the qftp API because of its quality of implementation. Qnetworkaccessmanager can be used to provide upload and download operations for FTP URLs.Since the original

1, installation Qt5　　The installation of QT5 is much simpler than the installation of QT4, and I am loaded with Qt5.4(qt-opensource-windows-x86-mingw491_opengl-5.4.0.exe), which integrates MinGW, QT Creator, etc., does not require you to download MinGW and QT Creator separately.First, go to QT official website download resources: Qt-opensource-windows-x86-mingw491_opengl-5.4.0.exe; Then, double-click Instal

Go from configuring QT5 in VS2013 win7_64Environment: Win x64 + Vs2013+qt5+vs_addinThe following example correctly configures the QT and VS2013 + QT AddIn development environment:Download VS2013:Http://pan.baidu.com/s/1geL6aQ3Download QT5 's source code and QT Vs-addin plugin to the official website (before you can register a login account on the website):https:/

In principle, the two cannot exist at the same time, but if they are installed, how can they be used separately?Qt4 Visual Studio add-in: The official website can download the installer, Qt-vs-addin-1.1.11-opensource.exeQt5 Visual Studio add-in: The official website can download the installer, Qt-vs-addin-1.2.2-opensource.exeI first installed the QT4 vs plugin, and then installed the QT5 vs plugin. When you run VS2010, you are prompted with a warning

Install FCITX-FRONTEND-QT5 azheng@ubuntu16:~$ sudo apt-get install fcitx-frontend-qt5 Copy plugin file to QT's directory azheng@ubuntu16:~$ cp /usr/lib/x86_64-linux-gnu/qt5/plugins/ platforminputcontexts/libfcitxplatforminputcontextplugin.so /home/azheng/qt5.7.0/5.7/gcc_64/plugins/ platforminputcontexts/azheng@ubuntu16:~$ CP /usr/lib/x86_64-linux-gnu/

Today there is a project to do the design of the instrument panel, need to use the QT5 QML to draw the interface, so transplanted a bit QT5. The main reference blogs are: http://blog.csdn.net/askeyes/article/details/8641161 http://blog.csdn.net/newthinker_wei/article/details/39560109 1.qt5.5.0 's Download Address http://download.qt.io/official_releases/qt/5.5/5.5.0/single/ Select qt-everywhere-opensource-sr

QT4 upgrade to QT5 changes: PC part: "Change Qtdir variable"Locate the. user file in the engineering root directory, such as InnoTabPlugin.vcxproj.userModify point to your QT5 root directory:Or find this file Qt4vspropertysheet.props, in which to modify:"New Qtwidgets module"As opposed to QT4, one of QT5 's major infrastructure modifications is to split the wid

QT5 launched a period of time, after a trial, although there are some problems, such as designer missing WebView and ACTIVEQT UI tools, in addition WebKit release version seems and Visual-studio Express compiler does not Too halftone, always reported run-time errors-Fortunately, the modules used are tested.1. Modify the path system. QT4 Qtgui Many classes are independent to the Widgets module, in order to improve compatibility, the head of these inclu