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    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. 
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Data Fields | |
| struct nk_style_item | normal | 
| struct nk_style_item | hover | 
| struct nk_style_item | active | 
| struct nk_color | border_color | 
| struct nk_color | bar_normal | 
| struct nk_color | bar_hover | 
| struct nk_color | bar_active | 
| struct nk_color | bar_filled | 
| struct nk_style_item | cursor_normal | 
| struct nk_style_item | cursor_hover | 
| struct nk_style_item | cursor_active | 
| float | border | 
| float | rounding | 
| float | bar_height | 
| struct nk_vec2 | padding | 
| struct nk_vec2 | spacing | 
| struct nk_vec2 | cursor_size | 
| float | color_factor | 
| float | disabled_factor | 
| int | show_buttons | 
| struct nk_style_button | inc_button | 
| struct nk_style_button | dec_button | 
| enum nk_symbol_type | inc_symbol | 
| enum nk_symbol_type | dec_symbol | 
| nk_handle | userdata | 
| void(* | draw_begin )(struct nk_command_buffer *, nk_handle) | 
| void(* | draw_end )(struct nk_command_buffer *, nk_handle) |