Qt3

Qt3 refers to the third major release of the Qt toolkit, a cross-platform application framework widely used for developing software with graphical user interfaces. Released in 2001, Qt3 brought significant advancements over its predecessors, solidifying Qt's position as a powerful tool for developers. Key features introduced or enhanced in Qt3 included improved support for internationalization, a more robust graphics system, and enhancements to its signal and slot mechanism, a core component for inter-object communication in Qt applications. The release also saw the integration of new modules and refinements to existing ones, such as QtWidgets for widgets and QtNetwork for network programming. Qt3 continued to support a wide range of operating systems, including Windows, macOS, and various Linux distributions, enabling developers to write code once and deploy it across multiple platforms. Its stability and feature set made it a popular choice for many commercial and open-source projects during its active development and support period. While now superseded by later Qt versions, Qt3 played a crucial role in the evolution of application development and influenced subsequent iterations of the Qt framework.