Qt is a cross-platform c++ application framework. qt's primary feature is its rich set of widgets that provide standard gui functionality.

qt documentation contains the offline documentation for qt 5. this package contains the complete qt 5 api documentation (qt's help format).

the documentation is provided in the qt's help format and manpage format; the qt's help format version can be viewed in conjunction with the qt assistant found in the qttools5-dev-tools package.