public static extern void nk_plot( nk_context *ctx, nk_chart_type chart_type, float *values, int count, int offset );
public static extern void nk_chart_add_slot( nk_context *ctx, nk_chart_type chart_type, int count, float min_value, float max_value );
public static extern int nk_chart_begin( nk_context *ctx, nk_chart_type chart_type, int num, float min, float max );
public static extern void nk_plot_function( nk_context *ctx, nk_chart_type chart_type, IntPtr userdata, nk_value_getter_fun getterfun, int count, int offset );
public static extern void nk_chart_add_slot_colored( nk_context *ctx, nk_chart_type chart_type, nk_color color, nk_color active, int count, float min_value, float max_value );
public static extern int nk_chart_begin_colored( nk_context *ctx, nk_chart_type chart_type, nk_color color, nk_color active, int num, float min, float max );