A GUI application is an application that uses a GUI ('Graphical User Interface'). In other words: it is an application that uses windows/dialogs with visual elements on which the user can click or navigate to with the keyboard. Most games are GUI applications, with the exception for text-adventures.

Note for Qt Creator users

In Qt Creator, a GUI application is a Qt Creator project type with the following line:


QT += gui

Note that this does not indicate that the program uses a GUI: it might just use non-visual Qt classes , making the program appear as a console application.

Example Qt Creator GUI application project file


#-------------------------------------------------

#

# Project created by QtCreator 2011-01-14T13:37:45

#

#-------------------------------------------------

QT       += core gui

TARGET = CppGuiApplication

TEMPLATE = app

SOURCES += main.cpp\

        mainwindow.cpp

HEADERS  += mainwindow.h

FORMS    += mainwindow.ui

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(C++) GUI application

Note for Qt Creator users

Example Qt Creator GUI application project file