libqt4-qt3support - 4:4.8.7+dfsg-18+deb10u1 main

Qt is a cross-platform C++ application framework. Qt's primary feature
is its rich set of widgets that provide standard GUI functionality.
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The Qt3Support module provides classes that ease porting from Qt 3 to Qt 4.
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It allows applications designed to use deprecated Qt 3 classes and functions
to work with Qt 4, with help from the qt3to4 porting tool found in the
libqt4-dev-bin package.