pub unsafe extern "C" fn gtk_paint_arrow(
style: *mut GtkStyle,
cr: *mut cairo_t,
state_type: GtkStateType,
shadow_type: GtkShadowType,
widget: *mut GtkWidget,
detail: *const c_char,
arrow_type: GtkArrowType,
fill: gboolean,
x: c_int,
y: c_int,
width: c_int,
height: c_int
)