Type Alias GtkScaleFormatValueFunc

pub type GtkScaleFormatValueFunc = Option<unsafe extern "C" fn(_: *mut GtkScale, _: c_double, _: gpointer) -> *mut c_char>;

Aliased Type

enum GtkScaleFormatValueFunc {
    None,
    Some(unsafe extern "C" fn(_: *mut GtkScale, _: f64, _: *mut c_void) -> *mut i8),
}

Variants

None

No value.

Some(unsafe extern "C" fn(_: *mut GtkScale, _: f64, _: *mut c_void) -> *mut i8)

Some value of type T.