Programmer Think

Because this is the environment for Qt as a graphical interface development, heretics have recorded the experience of building Qt 4.6.3 before themselves; However, later, because they decided to get rid of the Qt SDK provided by Qt for construction and factory development, the official knowledge studied how to build it by themselves. However, ...

Web Sockets The WebSockets module provides an implementation of the WebSockets protocol for WebSockets clients and servers. It mirrors the Qt CPP module. It allows sending a string and binary messages using a full duplex communication channel. A WebSocket is normally established by making an HTTP connection to the server and the server then "u ...

Reference: Qt Creator quick start, Third Edition, edited by Huo Yafei 1,UDP UDP(User Datagram Protocol) is a lightweight, unreliable, datagram oriented and connectionless protocol, which is used when reliability is not very important. UDP is generally divided into sender and receiver. QUdpSocket class is used to send and receive UDP datagram ...

I Create project Create a new project: 1. Create - > Application - > QT widgets application 2. Give the project a name: ExamSys 3. Select component: MinGW 32bit 4. Select type information: Class name: LoginDialog Base class: qdialog (dialog class) II Login interface Control interface First, in design mode: Add two labels, two bu ...

BLE introduction BLE Bluetooth is a Bluetooth module above Bluetooth 2.0, and classic Bluetooth is Bluetooth below Bluetooth 2.0. Bluetooth is divided into client and server. Classic Bluetooth can communicate between client and server through socket programming (similar to network socket), but BLE Bluetooth cannot communicate in this way. Ther ...

1. Use of custom signal slot in QT The signal slot provided by Qt framework cannot meet the needs of our project in some specific scenarios. Therefore, we also design our own signal and slot and use connect() to connect the customized signal slot. If you want to use a custom signal slot, first write a new class and let it inherit some st ...

01 - brief introduction of man-machine game algorithm    previously, we introduced in detail the packaging of chessboard class, the packaging of chess sub class and the implementation of chess walking algorithm of various types of chess pieces. With the foreshadowing in front, we can take the first step of computer intelligent ch ...

QWidget details 1, Description Base class for all visual controls Is the simplest blank control Control is the smallest element of the user interface Accept various events, mouse, keyboard Draw on the desktop and show it to users Each control is rectangular, and they are sorted in Z-axis order Control is cut by its parent control and the ...

Qt Quick Scene Graph related documents: https://doc.qt.io/qt-5/qtquick-visualcanvas-scenegraph.html Refer to the example customgeometry: https://doc.qt.io/qt-5/qtquick-scenegraph-customgeometry-example.html Complete code link of this article: https://github.com/gongjianbo/MyTestCode2021/tree/master/Qml/LearnQSG_20210614_Line There are many w ...

catalogue 1. Color picker set text 2. Component definition 3,Cell.qml code of QML 4. Master QML file 1. Color picker set text example: As can be seen from the above figure, there are six cells with different colors in the lower left corner. Click the Cell to set the color of the text. However, in order to avoid reusing code for each C ...