Because Qt 4.6 is long past its "End of Life" (EOL) status, it is no longer available on the primary Qt download page. To access it, you must use the official Qt Offline Installer Archive.
Legacy software does not receive security patches. Never use Qt 4.6 to build applications that handle sensitive data or connect to the open internet, as it is vulnerable to exploits discovered over the last decade. Alternatives to Using Qt 4.6
Look under the archive/qt/4.6/ directory. qt 4.6 download
Based on SCXML for managing complex application states.
available to you (MinGW, Visual Studio 2008?) Because Qt 4
You will find different installers based on your operating system:
The release of Qt 4.6 was centered on performance improvements and cross-platform consistency. It was the first version to officially support Windows 7, Mac OS X 10.6 (Snow Leopard), and the Symbian platform. Key features included: Never use Qt 4
A redesigned graphics pipeline that significantly improved rendering speeds.