#[repr(C)]
pub struct GtkContainerClass {
    pub parent_class: GtkWidgetClass,
    pub add: Option<unsafe extern "C" fn(_: *mut GtkContainer, _: *mut GtkWidget)>,
    pub remove: Option<unsafe extern "C" fn(_: *mut GtkContainer, _: *mut GtkWidget)>,
    pub check_resize: Option<unsafe extern "C" fn(_: *mut GtkContainer)>,
    pub forall: Option<unsafe extern "C" fn(_: *mut GtkContainer, _: gboolean, _: GtkCallback, _: gpointer)>,
    pub set_focus_child: Option<unsafe extern "C" fn(_: *mut GtkContainer, _: *mut GtkWidget)>,
    pub child_type: Option<unsafe extern "C" fn(_: *mut GtkContainer) -> GType>,
    pub composite_name: Option<unsafe extern "C" fn(_: *mut GtkContainer, _: *mut GtkWidget) -> *mut c_char>,
    pub set_child_property: Option<unsafe extern "C" fn(_: *mut GtkContainer, _: *mut GtkWidget, _: c_uint, _: *mut GValue, _: *mut GParamSpec)>,
    pub get_child_property: Option<unsafe extern "C" fn(_: *mut GtkContainer, _: *mut GtkWidget, _: c_uint, _: *mut GValue, _: *mut GParamSpec)>,
    pub get_path_for_child: Option<unsafe extern "C" fn(_: *mut GtkContainer, _: *mut GtkWidget) -> *mut GtkWidgetPath>,
    // some fields omitted
}
Fields
                           
                           parent_class: GtkWidgetClass
                           
                           
                           add: Option<unsafe extern "C" fn(_: *mut GtkContainer, _: *mut GtkWidget)>
                           
                           
                           remove: Option<unsafe extern "C" fn(_: *mut GtkContainer, _: *mut GtkWidget)>
                           
                           
                           check_resize: Option<unsafe extern "C" fn(_: *mut GtkContainer)>
                           
                           
                           forall: Option<unsafe extern "C" fn(_: *mut GtkContainer, _: gboolean, _: GtkCallback, _: gpointer)>
                           
                           
                           set_focus_child: Option<unsafe extern "C" fn(_: *mut GtkContainer, _: *mut GtkWidget)>
                           
                           
                           child_type: Option<unsafe extern "C" fn(_: *mut GtkContainer) -> GType>
                           
                           
                           composite_name: Option<unsafe extern "C" fn(_: *mut GtkContainer, _: *mut GtkWidget) -> *mut c_char>
                           
                           
                           set_child_property: Option<unsafe extern "C" fn(_: *mut GtkContainer, _: *mut GtkWidget, _: c_uint, _: *mut GValue, _: *mut GParamSpec)>
                           
                           
                           get_child_property: Option<unsafe extern "C" fn(_: *mut GtkContainer, _: *mut GtkWidget, _: c_uint, _: *mut GValue, _: *mut GParamSpec)>
                           
                           
                           get_path_for_child: Option<unsafe extern "C" fn(_: *mut GtkContainer, _: *mut GtkWidget) -> *mut GtkWidgetPath>