在PyQT5中当启动通过exec()启动QApplication应用之后，就会自动开启事件循环，监听界面信号触发，当有信号触发产生之后QApplication就会调用相关的槽函数执行，这些都是在同一个线程（GUI线程）中完成。GUI线程执行长耗时任务的时，会因为没有及时返回事件轮询 ...

嵌入式软件开发过程中，基本都会用到“延时”，本文分享几种Qt种延时处理方法。 一、阻塞型延时 阻塞的原理就是：在延时期间，本线程的事件循环得不到执行。 1、QThread类的sleep() 最简单的延时方法就是使用QThread类的sleep(n)、msleep(n)、usleep(n)，这几个函数的 ...

There’s a lot of talk these days about multicore technology and multithreaded development. The trend toward multiple compute cores is growing and having a profound impact on developers across various ...

Asynchronous Programming – Part 3: Concurrency in C++ with Qt6 The Signal-Slot Principle QThreadPool Listing 7: Using QThreadPool through inheritance. The second option is to directly pass a callable ...

The Qt6 framework is widely used, particularly for its powerful tools for creating user interfaces for embedded devices with C++. However, its applications extend beyond embedded systems. This article ...

The database support in Qt 4.x is quite robust. The library includes drivers for Oracle, PostgreSQL, SQLite and many other relational databases. Out of the box, the Qt database library also contains ...