| Nuklear
    This is a minimal-state, immediate-mode graphical user interface toolkit written in ANSI C and licensed under public domain. It was designed as a simple embeddable user interface for application and does not have any dependencies, a default render backend or OS window/input handling but instead provides a highly modular, library-based approach, with simple input state for input and draw commands describing primitive shapes as output. So instead of providing a layered library that tries to abstract over a number of platform and render backends, it focuses only on the actual UI. | 

| Data Fields | |
| float | global_alpha | 
| enum nk_anti_aliasing | line_AA | 
| !< global alpha value | |
| enum nk_anti_aliasing | shape_AA | 
| !< line anti-aliasing flag can be turned off if you are tight on memory | |
| unsigned | circle_segment_count | 
| !< shape anti-aliasing flag can be turned off if you are tight on memory | |
| unsigned | arc_segment_count | 
| !< number of segments used for circles: default to 22 | |
| unsigned | curve_segment_count | 
| !< number of segments used for arcs: default to 22 | |
| struct nk_draw_null_texture | tex_null | 
| !< number of segments used for curves: default to 22 | |
| const struct nk_draw_vertex_layout_element * | vertex_layout | 
| !< handle to texture with a white pixel for shape drawing | |
| nk_size | vertex_size | 
| !< describes the vertex output format and packing | |
| nk_size | vertex_alignment | 
| !< sizeof one vertex for vertex packing | |