Type Alias gtk4_sys::GtkDrawingAreaDrawFunc

pub type GtkDrawingAreaDrawFunc = Option<unsafe extern "C" fn(_: *mut GtkDrawingArea, _: *mut cairo_t, _: c_int, _: c_int, _: gpointer)>;

Aliased Type

enum GtkDrawingAreaDrawFunc {
    None,
    Some(unsafe extern "C" fn(_: *mut GtkDrawingArea, _: *mut cairo_t, _: i32, _: i32, _: *mut c_void)),
}

Variants

None

No value.

Some(unsafe extern "C" fn(_: *mut GtkDrawingArea, _: *mut cairo_t, _: i32, _: i32, _: *mut c_void))

Some value of type T.