qt5 book

After installing the plugin, it took a day to get involved. You can barely write a program. When configuring eclipse, pay attention to the following two points: 1) Add QT + = widgets to the project name. Pro. Of course, write it after QT + = core GUI. If this parameter is not added, an error occurs during the link. 2) qt5 differs from qt4 in that it places frequently-used components in the qtwidgets folder. It seems to have been placed in qtgui before

All articles in this series can be viewed here in http://blog.csdn.net/cloud_castle/article/category/2123873 Link to qt5 official demo release set 27 -- extending qml-Attached properties example This demo demonstrates how to add signals for the qml custom type, which is similar to what qt5 official demo consumer set 16 -- Chapter 2: connecting to C ++ methods and signals introduces, given the size of the e

All articles in this series can be viewed here in http://blog.csdn.net/cloud_castle/article/category/2123873 Link to qt5 official demo example set 29 -- extending qml-property value source example Do you still remember that we used to contact qml custom property binding in qt5 official demo release set 17 -- Chapter 3: Adding property bindings? If you do not remember, you can learn more. This example may b

Libqt5svg5-dev Qtmobility-dev qtbase5-dev qttools5-dev qtmobility-dev libqt5webkit5-dev qtbase5-dev libqt5x11extras5-dev Qtbase5-dev Libqt5xmlpatterns5-devsudo apt-get install QtcreatorQmake--version View version of the time will be prompted to find, edit ~/.BASHRC, in the end add export qt_select=qt5.Qtselector-l can see all available versions, set the environment variable Qt_select to choose which version to select.7. Start the program on the remot

QT5 Thread shutdownQthread description of the destructor:Note that deleting a Qthread object does not stop the execution of the thread it manages. Deleting a running Qthread (that is, isfinished () returns false) causes the program to crash. Wait for the finished() signal before deleting qthread.From Qt4.8, you can release the thread object that is running just ended by connecting the finished () signal to Qobject::d eletelater ().Qthread classQuit ()

All articles in this series can be viewed here in http://blog.csdn.net/cloud_castle/article/category/2123873 Link to qt5 official demo release set 31 -- stocqt Because the qml thread is involved in this example, it is found that it belongs to the QT quick example series. There are 19 demos in this series, covering multiple elements in QT quick. If you are free, let's take an article in this series. I believe this is a great journey ~ Well, when writ

Label: qt5.qstring Control I. String qstring: 1. Operation string: (1) "+" and "+ =" operators: Example: qstring STR = "hello ,"; STR = STR + "World !"; STR + = "We come !"; // STR = "Hello, world! We come !" (2) qstring: append () function :( it has the same function as the "+ =" operator) For example, qstring str1 = "hello ,"; Qstring str2 = "World !"; Str1.append (str2); // str1 = "Hello, world !" (3) qstring: sprintf () function: Example: Str. spr

Qt5 official demo release set 34 -- Concentric Circles Example, qt5concentric All articles in this series can be viewed here in http://blog.csdn.net/cloud_castle/article/category/2123873 Link to Qt5 official demo getting set 33 -- Qt Quick Examples-Window and Screen It seems that this series has not been updated for a while. On the one hand, a lot of things are coming together, a little more busy than it w

Tag: His har processing const for NIC supports message formQtextcodec * Bianma = Qtextcodec::codecforname ("GBK");Qmessagebox::information (This, "hint", Bianma->tounicode ("Chinese display!"));You can actually convert to a Unicode type by using a static function defined by qstring:Qstring::fromlocal8bit ("hint")In Qt5, however, a dedicated processing macro is provided to support the Chinese constant, which is qstringliteral, but it can only handle co

* label = new QLabel ("Hello Qt ");QLabel * label = new QLabel ("QPushButton * button = new QPushButton ("Quit ");QObject: connect (button, SIGNAL (clicked (), app, SLOT (quit ()));QVBoxLayout * layout = new QVBoxLayout;Layout-> addWidget (label );Layout-> addWidget (button );Window-> setLayout (layout );Window-> show ();Return app.exe c ();} The code displays the following error:Runtime error prompt: # include -- No such file ......In fact, many common QT header file

My QT5 learning path (1) -- Talking about the installation and configuration of QT, qt5qtI. Preface Speaking of Qt, C ++ is a great language. Because of its object-oriented programming ideas and steep learning curves, it was very difficult to learn at the beginning. Qt has basically encapsulated many C ++ tool libraries and interface libraries since QT4, and supports cross-platform, which is its biggest advantage. Compared with the ancient MFC and C #

? I recently installed QT5 and works like a charm for API and armeabi-v7a.but I added second AVD with other parameters (of the course, I installed packages in AVD settings). Now, I can ' t compile first project and new project for API10. When the check any toolchain (Armeabi or armeabi-v7a), the window for choose AvD says that I don ' t has compatible AVD (in message Displays that AVD supports? Default/armeabi? or?default/armeabi-v7a).anyone know how

Ubuntu16 with QT5, the implementation of the dialog box program, Step: Generate interface Dialog.ui, apply it to the main program, through the main program display.1 Dialog.ui Interface GenerationOn the command line input: DesignerEnter the interface Editor and then generate Mydialog.ui2 Copy the Dialog.ui file to the current project and "Add existing" to the project3 Edit main.cpp File:#include #include #include ui_mydialog.h, this file is temporaril

Turn: Qt4 project migration to QT5, problems encountered and solutions Warning:target is empty Open the pro file and you'll find: TARGET =, add the name of the executable program you want to generate later. error:QWidget:No such file or directory #include Added in Pro file: QT + + Core GUIGreaterThan (qt_major_version,4): QT + = WidgetsNote: I found that after the addition, the problem has not been resolved, and finally found that I was copied up,

QT5 Connection Mysql5.7 Example: MYSQLQT DatabaseC++QT FRAME (650) this.width=650; "class=" Arrow-down "src=" http://static.blog.csdn.net/images/arrow_triangle%20_ Down.jpg "style=" Border:none; "alt=" arrow_triangle%20_down.jpg "/>。[CPP] view plain copy 650) this.width=650; "Src=" https://code.csdn.net/assets/CODE_ Ico.png "width=" "height=" "alt=" on code to view the chip "style=" Border:none; "/>650" this.width=650; "src=" https ://code.csdn.net/

Tags: div password data lib dynamic link DDD sources own shareFirst, the compiler driver Reference Blog: http://blog.csdn.net/xian0gang/article/details/49791351 Because since QT5, it has a database-driven, so we don't have to bother compiling or using the database. QT access to MySQL requires two dynamic link library files, one is qt own MySQL driver plug-in, and the other is MySQL provides a dynamic link library, indispensable. In the program to spec

Cannot find-lgl error when using QT compilation under Ubuntu, use commandBecause the system lacks a link library, the following command can be used at the terminal to resolve the problem.sudo apt-get install Libqt4-dev or sudo apt-get install Libgl1-mesa-dev or Libgl1-mesa-dev or Libglu1-mesa-devcan solve the problemYou can apt-get install update firstI encountered a collection of errors for Linux:1:ps-aux | grep Corsegui Find the Corsegui processKill-s 9 5283 kills the Corsegui process2: Keyboa

QT starts by default is Utf-8, and VS2013 default program is encoded as gb2312;This will find the use of Chinese language when garbled.There are generally two solutions:1. When using Chinese, use QtextcodecQtextcodec *gbk=qtextcodec::codecforname ("gb2312");QString Str=gbk->tounicode ("Chinese");This is more cumbersome to use, it is recommended to use the second2. Change the "Newc++file.cpp" and "hfile.h" files in the "Microsoft Visual Studio 12.0\vc\vcprojectitems" directory. Add a similar to t

QT5 obtains the local IP address, computer name, network connection name, MAC address, subnet mask, and broadcast address.Get Host Name /** Name: get_localmachine_name * function: get the name of the Local Machine * parameter: no * returned: QString */QString CafesClient: get_localmachine_name () {QString machineName = QHostInfo :: localHostName (); return machineName ;}Get local IP Address /** Name: get_localmachine_ip * function: Get the local IP Ad

widget in front of itpart. 3, Qdialogthe Qdialog class is the base class for dialog Windows. The dialog window is primarily used for short-term tasks as well as for brief userthe top-level window for communication. Qdialog can be modal dialogs or non-modal dialog boxes. Qdialog supports extensibility andand can provide a return value. They can have default buttons. Of course, you can also add a new base class object to the main functionint main (int argc, char *argv[]) { qapplication app (ar