Function AddAppWindowA 

pub unsafe fn AddAppWindowA(
    WorkbenchBase: *mut Library,
    id: ULONG,
    userdata: ULONG,
    window: *mut Window,
    msgport: *mut MsgPort,
    taglist: *const TagItem,
) -> *mut AppWindow

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