https://github.com/andlabs/libui

C
Simple and portable (but not inflexible) GUI library in C that uses the native GUI technologies of each platform it supports.

libui: a portable GUI library for C

This README is being written.

Runtime Requirements

• Windows: Windows Vista SP2 with Platform Update or newer
• Unix: GTK+ 3.4 or newer
• Mac OS X: OS X 10.7 or newer

Build Requirements

• All platforms:
  • GNU make 3.81 or newer (Xcode comes with this; on Windows you will need to get it yourself)
• Windows: Microsoft Visual Studio 2013 or newer (2013 is needed for va_copy())
  • MinGW is currently unsupported. MinGW-w64 support will be re-added once the following features come in:
    • Isolation awareness
    • Linker symbols for some functions such as TaskDialog() (which I thought I submitted...)
• Unix: nothing specific
• Mac OS X: nothing specific, so long as you can build Cocoa programs

(TODO write some notes on make variables and cross-compiling)

Documentation

Needs to be written. Consult ui.h and the examples for details for now.

Screenshots

From examples/controlgallery: