#[repr(C)]
pub struct GtkStyleClass {
    pub parent_class: GObjectClass,
    pub realize: Option<unsafe extern "C" fn(_: *mut GtkStyle)>,
    pub unrealize: Option<unsafe extern "C" fn(_: *mut GtkStyle)>,
    pub copy: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut GtkStyle)>,
    pub clone: Option<unsafe extern "C" fn(_: *mut GtkStyle) -> *mut GtkStyle>,
    pub init_from_rc: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut GtkRcStyle)>,
    pub set_background: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut GdkWindow, _: GtkStateType)>,
    pub render_icon: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *const GtkIconSource, _: GtkTextDirection, _: GtkStateType, _: c_int, _: *mut GtkWidget, _: *const c_char) -> *mut GdkPixbuf>,
    pub draw_hline: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int)>,
    pub draw_vline: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int)>,
    pub draw_shadow: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int)>,
    pub draw_arrow: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: GtkArrowType, _: gboolean, _: c_int, _: c_int, _: c_int, _: c_int)>,
    pub draw_diamond: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int)>,
    pub draw_box: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int)>,
    pub draw_flat_box: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int)>,
    pub draw_check: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int)>,
    pub draw_option: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int)>,
    pub draw_tab: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int)>,
    pub draw_shadow_gap: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int, _: GtkPositionType, _: c_int, _: c_int)>,
    pub draw_box_gap: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int, _: GtkPositionType, _: c_int, _: c_int)>,
    pub draw_extension: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int, _: GtkPositionType)>,
    pub draw_focus: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int)>,
    pub draw_slider: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int, _: GtkOrientation)>,
    pub draw_handle: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int, _: GtkOrientation)>,
    pub draw_expander: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: GtkExpanderStyle)>,
    pub draw_layout: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: gboolean, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: *mut PangoLayout)>,
    pub draw_resize_grip: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: *mut GtkWidget, _: *const c_char, _: GdkWindowEdge, _: c_int, _: c_int, _: c_int, _: c_int)>,
    pub draw_spinner: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: *mut GtkWidget, _: *const c_char, _: c_uint, _: c_int, _: c_int, _: c_int, _: c_int)>,
    pub _gtk_reserved1: Option<unsafe extern "C" fn()>,
    pub _gtk_reserved2: Option<unsafe extern "C" fn()>,
    pub _gtk_reserved3: Option<unsafe extern "C" fn()>,
    pub _gtk_reserved4: Option<unsafe extern "C" fn()>,
    pub _gtk_reserved5: Option<unsafe extern "C" fn()>,
    pub _gtk_reserved6: Option<unsafe extern "C" fn()>,
    pub _gtk_reserved7: Option<unsafe extern "C" fn()>,
    pub _gtk_reserved8: Option<unsafe extern "C" fn()>,
    pub _gtk_reserved9: Option<unsafe extern "C" fn()>,
    pub _gtk_reserved10: Option<unsafe extern "C" fn()>,
    pub _gtk_reserved11: Option<unsafe extern "C" fn()>,
}
Fields
                           
                           parent_class: GObjectClass
                           
                           
                           realize: Option<unsafe extern "C" fn(_: *mut GtkStyle)>
                           
                           
                           unrealize: Option<unsafe extern "C" fn(_: *mut GtkStyle)>
                           
                           
                           copy: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut GtkStyle)>
                           
                           
                           clone: Option<unsafe extern "C" fn(_: *mut GtkStyle) -> *mut GtkStyle>
                           
                           
                           init_from_rc: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut GtkRcStyle)>
                           
                           
                           set_background: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut GdkWindow, _: GtkStateType)>
                           
                           
                           render_icon: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *const GtkIconSource, _: GtkTextDirection, _: GtkStateType, _: c_int, _: *mut GtkWidget, _: *const c_char) -> *mut GdkPixbuf>
                           
                           
                           draw_hline: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int)>
                           
                           
                           draw_vline: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int)>
                           
                           
                           draw_shadow: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int)>
                           
                           
                           draw_arrow: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: GtkArrowType, _: gboolean, _: c_int, _: c_int, _: c_int, _: c_int)>
                           
                           
                           draw_diamond: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int)>
                           
                           
                           draw_box: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int)>
                           
                           
                           draw_flat_box: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int)>
                           
                           
                           draw_check: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int)>
                           
                           
                           draw_option: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int)>
                           
                           
                           draw_tab: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int)>
                           
                           
                           draw_shadow_gap: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int, _: GtkPositionType, _: c_int, _: c_int)>
                           
                           
                           draw_box_gap: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int, _: GtkPositionType, _: c_int, _: c_int)>
                           
                           
                           draw_extension: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int, _: GtkPositionType)>
                           
                           
                           draw_focus: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int)>
                           
                           
                           draw_slider: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int, _: GtkOrientation)>
                           
                           
                           draw_handle: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: GtkShadowType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: c_int, _: c_int, _: GtkOrientation)>
                           
                           
                           draw_expander: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: GtkExpanderStyle)>
                           
                           
                           draw_layout: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: gboolean, _: *mut GtkWidget, _: *const c_char, _: c_int, _: c_int, _: *mut PangoLayout)>
                           
                           
                           draw_resize_grip: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: *mut GtkWidget, _: *const c_char, _: GdkWindowEdge, _: c_int, _: c_int, _: c_int, _: c_int)>
                           
                           
                           draw_spinner: Option<unsafe extern "C" fn(_: *mut GtkStyle, _: *mut cairo_t, _: GtkStateType, _: *mut GtkWidget, _: *const c_char, _: c_uint, _: c_int, _: c_int, _: c_int, _: c_int)>
                           
                           
                           _gtk_reserved1: Option<unsafe extern "C" fn()>
                           
                           
                           _gtk_reserved2: Option<unsafe extern "C" fn()>
                           
                           
                           _gtk_reserved3: Option<unsafe extern "C" fn()>
                           
                           
                           _gtk_reserved4: Option<unsafe extern "C" fn()>
                           
                           
                           _gtk_reserved5: Option<unsafe extern "C" fn()>
                           
                           
                           _gtk_reserved6: Option<unsafe extern "C" fn()>
                           
                           
                           _gtk_reserved7: Option<unsafe extern "C" fn()>
                           
                           
                           _gtk_reserved8: Option<unsafe extern "C" fn()>
                           
                           
                           _gtk_reserved9: Option<unsafe extern "C" fn()>
                           
                           
                           _gtk_reserved10: Option<unsafe extern "C" fn()>
                           
                           
                           _gtk_reserved11: Option<unsafe extern "C" fn()>