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Record the whole process of connecting to SQL Server database in detail environment System: Windows 10 professionalQt version: Qt 5.14.2 [compilation kit MinGW 32]SQL Sever: SQL Sever 2019Programming language: C++ 1, Configuring ODBC data sources 1, Add a new user in SQL Sever Manger 1. Open the MSS Management Studio provided below ...

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 ...

QT-UI layout The simple arrangement in the early stage is good, and it may be adjusted in the future The following is a brief description of the following figure: lineEdit is used to input information, ListWidget is used to display the final prompt information, and TextBrowser is used to print the obtained XML file, which can be deleted lat ...

Network programming The Qt network module provides us with classes for writing TCP / IP clients and servers. It provides lower level classes, such as QTcpSocket, QTcpServer and QUdpSocket representing low-level network concepts, and high-level classes such as QNetworkRequest, QNetworkReply and QNetworkAccessManager to perform network opera ...

QT5 Baidu map development and learning - Preparation 1. Environmental construction First of all, it should be clear why MSVC environment is used when QT and Baidu map API are used, because the compiler MinGW of QT does not have webenginewidgets module (that's why). However, this environment is not well configured. Recently, this problem bothe ...

Use background With the increase of development projects, the business structure is more and more complex. In order to improve the development efficiency of programmers and reduce the maintenance cost (code readability), using MVC (MVD) mode in QT is an effective method. Customizing the Model is the first step in using the MVC pattern. How t ...

Catalog Qt embedded Baidu map 1.WebEngineView declaration and definition 2. Use Baidu map JavaScript API 2.1. Register account, add application and obtain ak code 2.2. Set container style and create map container element 2.3. Initialize map and display 3.Qt calls Javascript function 4.Javascr ...

I. Preface Code line count is mainly used to count the number of code lines of all files in the project, including blank lines, comment lines, code lines. You can specify filter extensions, such as files that only want to count. cpp, you can also specify files or directories for statistics. The first thing to do after writing this tool is to co ...

I. Preface This control originates from a music player. When writing the music player, it needs to convert the audio data into corresponding spectrum display. The third-party library of Fmod is used to process it (fmod sound system is a revolutionary audio engine for game developers, very powerful and ...