- Qt 5.5
- Qt Widgets
- Undo Framework
- undo.pro Example File
- Qt 5.5.1 Reference Documentation

# undo.pro Example File

tools/undo/undo.pro

    QT += widgets

    SOURCES += main.cpp mainwindow.cpp commands.cpp document.cpp
    HEADERS += mainwindow.h commands.h document.h
    FORMS += mainwindow.ui

    build_all:!build_pass {
        CONFIG -= build_all
        CONFIG += release
    }

    RESOURCES += undo.qrc

    # install
    target.path = $$[QT_INSTALL_EXAMPLES]/widgets/tools/undo
    INSTALLS += target