#[repr(C)]
pub struct GtkScaleButtonClass {
    pub parent_class: GtkButtonClass,
    pub value_changed: Option<unsafe extern "C" fn(_: *mut GtkScaleButton, _: c_double)>,
    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()>,
}
Fields
                           
                           parent_class: GtkButtonClass
                           
                           
                           value_changed: Option<unsafe extern "C" fn(_: *mut GtkScaleButton, _: c_double)>
                           
                           
                           _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()>