FLTK is a cross-platform C++ GUI toolkit for UNIX ® /Linux ® (X11 and Wayland), Microsoft ® Windows ®, and macOS ®. FLTK provides modern GUI functionality without the bloat and supports 3D graphics via OpenGL ® and its built-in GLUT emulation.

Jan 3, 2011 · We recommend to use the latest stable release FLTK 1.4.2, the first entry in the table below. Only old software should use 1.3.11, and only very old software may need older versions. These older releases are end of life and may not even compile on new platforms.

The Fast Light Tool Kit ("FLTK") is a cross-platform C++ GUI toolkit for UNIX®/Linux® (X11), Microsoft® Windows®, and Apple® macOS®. FLTK provides modern GUI functionality without bloat and supports 3D graphics via OpenGL® and its built-in GLUT emulation.

May 30, 2011 · You can view the FLTK documentation in a number of formats on-line: Frequently Asked Questions. HTML; Developer Documents. Configuration Management Plan w/Coding Standards (updated 17 Jan 2025) HTML; Credits (updated 13 Nov 2024) HTML; Development Roadmap (updated 14 Nov 2024) HTML; Human Interface …

FLTK is a LGPL'd C++ graphical user interface toolkit for X (UNIX®), Linux® (X11 and Wayland), macOS (aka OS X), OpenGL, and Windows (Microsoft® Windows® XP, 2000, and later). ... 1464 FLTK code repository on Github

The Fast Light User Interface Designer, or FLUID, is a graphical editor that is used to produce FLTK source code. FLUID edits and saves its state in .fl files. These files are text, and you can (with care) edit them in a text editor, perhaps to get some special effects. FLUID can "compile" the .fl file into a .cxx and a .h file.

Introduction to FLTK. FLTK Basics. Common Widgets and Attributes. Colors; Box Types; Labels and Label Types; Drawing Images; Coordinates and Layout Widgets. How Does Resizing Work? Designing a Simple Text Editor. Drawing Things in FLTK. When Can You Draw Things in FLTK? What Units Do FLTK Functions Use? Drawing Functions; Drawing Images ...

May 8, 2005 · Every widget in fltk has a single callback function. Fltk assummes that for any type of widget, there is exactly one "interesting" thing it does, such as the value inside it being changed, or the user changing what is selected, or for buttons the user pushing them.

This chapter describes the coordinate systems that apply when positioning widgets manually, and some of the basics of FLTK layout widgets that are used to position widgets automatically. The Widget Coordinate System

FLTK (pronounced "fulltick") is a cross-platform C++ GUI toolkit for UNIX ® /Linux ® (X11), Microsoft ® Windows ®, and MacOS ® X. FLTK provides modern GUI functionality without the bloat and supports 3D graphics via OpenGL ® and its built-in GLUT emulation.