FLTK

Overview

FLTK (Fast, Light Toolkit) is a cross-platform C++ GUI toolkit that offers a simple and efficient way to create graphical user interfaces. FLTK is designed to be small and lightweight, making it particularly well-suited for applications that require minimal resource usage.

Key Features:

• Minimalistic design for low resource consumption
• Cross-platform support (Windows, macOS, Linux)
• C++ based, enabling efficient performance
• Includes a variety of widgets and controls
• OpenGL support for graphics-intensive applications

Common Use Cases:

• Simple and lightweight desktop applications
• Embedded systems requiring GUIs
• Cross-platform tools and utilities
• Applications needing minimal setup and dependencies
• Education and research projects needing graphical interfaces

Installation

# Install FLTK from source or package manager
# On Linux-based systems
sudo apt-get install libfltk1.3-dev

# Building FLTK applications usually involves C++ toolchains

Example

#include <FL/Fl.H>
#include <FL/Fl_Window.H>
#include <FL/Fl_Button.H>

void button_callback(Fl_Widget* widget, void* data) {
    fl_message("Button clicked!");
}

int main() {
    Fl_Window* window = new Fl_Window(340, 180, "Simple FLTK Example");
    Fl_Button* button = new Fl_Button(20, 40, 300, 100, "Click Me");
    button->callback(button_callback);
    
    window->end();
    window->show();
    
    return Fl::run();
}

Link

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