pub unsafe extern "C" fn gtk_constraint_new_constant(
target: *mut GtkConstraintTarget,
target_attribute: GtkConstraintAttribute,
relation: GtkConstraintRelation,
constant: c_double,
strength: c_int,
) -> *mut GtkConstraint
pub unsafe extern "C" fn gtk_constraint_new_constant(
target: *mut GtkConstraintTarget,
target_attribute: GtkConstraintAttribute,
relation: GtkConstraintRelation,
constant: c_double,
strength: c_int,
) -> *mut GtkConstraint