C# Rapid Open Widgets
**C.R.O.W.** is an [application framework](https://en.wikipedia.org/wiki/Application_framework) for building portable graphical interfaces entirely developed in **C#**. It provides a declarative interface language with **styling** and **templates** called [IML](interface-markup-language) for **Interface Markup Language** similar to [XAML](https://en.wikipedia.org/wiki/Extensible_Application_Markup_Language) and a binding system for easy code linking.
C.R.O.W. is in **beta** development state, api could change.
There's currently **3 main versions**, diverging on the way they handle OS integration. The last one replace [Cairo](https://www.cairographics.org/) with [vkvg](https://github.com/jpbruyere/vkvg).
| Package | Description | Link |
|-------------------|--------------------|------------------------------|
| Crow.OpenTK |OS layer handle with [OpenTK](https://github.com/opentk/opentk), fast implementation of 3D gui in OTK scenes |[](https://www.nuget.org/packages/Crow.OpenTK) |
| Crow | `IBackend` interface for **xcb** and **win32** |[](https://www.nuget.org/packages/Crow) |
| Crow.Vk | OS layer with [GLFW](https://www.glfw.org/), [vkvg](https://github.com/jpbruyere/vkvg) for accelerated 2d vectors and text.| [](https://www.nuget.org/packages/Crow.Vk) |
#### Features
- [Declarative interface definition](https://github.com/jpbruyere/Crow/wiki/interface-markup-language).
- [Templates](https://github.com/jpbruyere/Crow/wiki/Templates)
- [Styling](https://github.com/jpbruyere/Crow/wiki/Styling)
- [Dynamic binding system](https://github.com/jpbruyere/Crow/wiki/The-binding-system)
- SVG rendering (with [rsvg library](https://developer.gnome.org/rsvg/))
#### Documentation
Due to the early state of this project and the frequent changes, some part of the docs may be outdated.
* [Introduction](https://github.com/jpbruyere/Crow/wiki)
* [Classes documentation autogenerated from doxygen](https://github.com/jpbruyere/Crow/wiki/index)
* [Tutorials](https://github.com/jpbruyere/Crow/wiki/Tutorials)
Please report bugs and issues on [GitHub](https://github.com/jpbruyere/Crow/issues)
### Requirements
- [Cairo Graphic Library](https://cairographics.org/) >= 1.20
- [rsvg library](https://developer.gnome.org/rsvg/) for svg rendering