Type Alias GtkTickCallback 

pub type GtkTickCallback = Option<unsafe extern "C" fn(*mut GtkWidget, *mut GdkFrameClock, gpointer) -> gboolean>;

Aliased Type

pub enum GtkTickCallback {
    None,
    Some(unsafe extern "C" fn(*mut GtkWidget, *mut GdkFrameClock, *mut c_void) -> i32),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*mut GtkWidget, *mut GdkFrameClock, *mut c_void) -> i32)

Some value of type T.