Function CreateGadgetA 

pub unsafe fn CreateGadgetA(
    GadToolsBase: *mut Library,
    kind: ULONG,
    gad: *mut Gadget,
    ng: *mut NewGadget,
    taglist: *const TagItem,
) -> *mut Gadget

libname: “gadtools.library” (V36) (Kickstart 2.0)