openssl动态链接库libcrypto-1_1.dll、libssl-1_1.dll、libcrypto-1_1-x64.dll、libssl-1_1-x64.dll。置于Qt5.12.x的bin目录下，用于使Qt支持ssl。没有这些文件时，QSslSocket::supportsSsl()打印false，有这些文件时，打印true

现场总线modbus大作业，主站从站，基于qt

观众 基于 OpenSceneGraph 的 Qt 小部件显示图像和 3D 点云

5.保证无毒 1.简单,方便,实用 3.实例可以自行改用 1.如有非法,本人无法律责任！ 8.更多作品,查找标签“朱建强”7.下载,请杀毒！ 4.如需联系我请看左边数字！1.如不知代表何物，那就放弃计算机吧！ 0.还不懂？CSDN老板不让我上传联系方式。

Mastering Qt 5 English | 6 Feb. 2017 | ISBN: 1786467127 | 575 Pages | AZW3/MOBI/EPUB/PDF (conv) | 25.28 MB Key Features Unleash the power of Qt 5 with C++14 Integrate useful third-party libraries such as OpenCV Package and deploy your application on multiple platforms Book Description Qt 5.6 is an application development framework that provides a great user experience and develops full-capability applications with OpenGl/ OpenGL ES graphics acceleration. This book will address challenges in successfully developing cross-platform applications with the Qt framework. Cross-platform development needs a well organized project. Using this book, you will have a better understanding of the Qt framework and the tools to resolve serious issues such as linking, debugging, and multithreading. Your journey will start with the new Qt 5 features. Then you will explore different platforms and learn to tame them. Every chapter along the way is a logical step that you must take to master Qt. The journey will end in an application that has been tested and is ready to be shipped. What you will learn Create stunning UIs with Qt Widget and Qt Quick Develop powerful, cross-platform applications with the Qt framework Design GUIs with the Qt Designer and build a library in it for UI preview Handle user interaction with the Qt signal/slot mechanism in C++ Prepare a cross-platform project to host a third-party library Develop a Qt application using the OpenCV API Use the Qt Animation framework to display stunning effects Deploy mobile apps with Qt and embedded platforms

QT连接MySQL数据库示例代码

使用Qt编写的局域网多线程文件传输工具，设计网络，多线程，模型视图委托编程

在使用Qt开发时，遇到大量带变量的公式计算，此时写代码解析公式非常繁琐，此案例使用QScriptEngine的evaluate方法完美解决，既简单又方便。可以处理数据库中的大量公式计算。此资源中包含源代码项目文件和打包完成的文件夹，下载后直接点击打包文件夹中的exe文件执行可看到效果。

qt_04_QtPaintDevice.rar 练习绘图设备的dome文件，建议配文档进行观看

实现版本号的对比，HTTP下载文件，有测试程序和辅助程序，能在Qt5.7.0 32位机上跑起来