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/**
\page preface Preface
This manual describes the Fast Light Tool Kit ("FLTK") version 1.4.0,
a C++ Graphical User Interface ("GUI") toolkit for UNIX, Microsoft Windows,
and Apple macOS.
Version 1.4.0 introduces support for a new windowing system under
Linux/Unix: Wayland. FLTK applications under Linux/Unix run unchanged
as Wayland or X11 clients depending on availability at run-time.
Each of the chapters in this manual is designed as a tutorial for
using FLTK, while the appendices provide a convenient reference
for all FLTK widgets, functions, and operating system interfaces.
<B>This manual may be printed, modified, and/or used under
the terms of the FLTK license provided in: \ref license.</B>
\section preface_organisation Organization
This manual is organized into the following chapters and appendices:
\li \ref intro
\li \ref basics
\li \ref common
\li \ref editor
\li \ref drawing
\li \ref events
\li \ref subclassing
\li \ref opengl
\li \ref fltk-options
\li \ref advanced
\li \ref unicode
\li \ref enumerations
\li \ref glut
\li \ref forms
\li \ref osissues
\li \ref migration_1_4
\li \ref development
\li \ref license
\li \ref examples
\section preface_conventions Conventions
This manual was generated using Doxygen
(see https://www.doxygen.org/)
to process the source code itself, special comments in the code,
and additional documentation files.
In general, Doxygen recognizes and denotes the following entities as shown:
- classes, such as Fl_Widget,
- methods, such as Fl_Widget::callback(Fl_Callback* cb, void* p),
- functions, such as fl_draw(const char *str, int x, int y),
- internal links, such as \ref preface_conventions,
- external links, such as https://www.fltk.org/.
Other code samples and commands are shown in <tt>regular courier type</tt>.
\section preface_abbreviations Abbreviations
The following abbreviations are used in this manual:
\par X11
The X Window System version 11.
\par Xlib
The X Window System interface library.
\par Windows, <tt>WIN32</tt>
The Microsoft Windows Application Programmer's Interface for Windows 2000,
Windows XP, Windows Vista, Windows 7 and later Windows versions.
FLTK uses the preprocessor definition <tt>_WIN32</tt> for the 32 bit
and 64 bit Windows API.
\par macOS (aka Mac OS X), <tt>__APPLE__</tt>
The Apple desktop operating sytem macOS 10.0 and later. MacOS 8 and 9 support
was dropped after FLTK 1.0.10. FLTK uses the preprocessor definition
<tt>\__APPLE__</tt> for macOS.
\section preface_copyrights Copyrights and Trademarks
FLTK is \include{doc} copyright.dox
Use and distribution of FLTK is governed by the GNU Library General Public
License with 4 exceptions, located in \ref license.
UNIX is a registered trademark of the X Open Group, Inc.
Microsoft and Windows are registered trademarks of Microsoft
Corporation. OpenGL is a registered trademark of Silicon
Graphics, Inc. Apple, Macintosh, MacOS, macOS, and Mac OS X are
registered trademarks of Apple Computer, Inc.
\htmlonly
<hr>
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Introduction to FLTK
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*/
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